CN103361638B - Oil engine - Google Patents
Oil engine Download PDFInfo
- Publication number
- CN103361638B CN103361638B CN201310074037.4A CN201310074037A CN103361638B CN 103361638 B CN103361638 B CN 103361638B CN 201310074037 A CN201310074037 A CN 201310074037A CN 103361638 B CN103361638 B CN 103361638B
- Authority
- CN
- China
- Prior art keywords
- film
- weight percent
- nickel plating
- electroless nickel
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 146
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 73
- 238000007747 plating Methods 0.000 claims abstract description 66
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 44
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 25
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 23
- 239000010941 cobalt Substances 0.000 claims abstract description 23
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 23
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000010937 tungsten Substances 0.000 claims abstract description 23
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011574 phosphorus Substances 0.000 claims abstract description 22
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 28
- 239000010408 film Substances 0.000 description 138
- 230000000052 comparative effect Effects 0.000 description 34
- 239000007788 liquid Substances 0.000 description 33
- 229910018104 Ni-P Inorganic materials 0.000 description 26
- 229910018536 Ni—P Inorganic materials 0.000 description 26
- 229910020515 Co—W Inorganic materials 0.000 description 23
- 239000003921 oil Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 229910052796 boron Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000007781 pre-processing Methods 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000002203 pretreatment Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
Landscapes
- Chemically Coating (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention provides a kind of electroless nickel plating film, it is suitable for use as the piston of oil engine or the film of cylinder, containing lead composition and price is lower.The slipping plane (12a) of the cylinder (12) that the slipping plane (13) of the piston (11) of this oil engine or this piston slide therein has electroless nickel plating film (20), this electroless nickel plating film contains the tungsten of the phosphorus of weight percent 0.6 ~ 2.8%, the cobalt of weight percent 0.5 ~ 1.8% and weight percent 0.005 ~ 0.5%, and remainder is nickel.
Description
Technical field
The present invention relates to a kind of oil engine, its piston or cylinder make this oil engine wear resistance be improved because having electroless nickel plating film.
Background technology
In recent years, in order to alleviate the weight of oil engine, people are adopting the piston be made up of aluminium alloy and the such combination of the cylinder be made up of aluminium alloy gradually.Produce friction between the slipping plane (inner peripheral surface) of the cylinder slided due to slipping plane (periphery) and this piston of piston therein, therefore each slipping plane all can produce wearing and tearing.Because each slipping plane produces wearing and tearing, therefore likely there is the problems such as blocking under warming.Especially the wearing and tearing between aluminium alloy are comparatively serious.In order to alleviate each slipping plane the degree of wear and in order to prevent the generation of blocking under warming phenomenon, the method be coated in by solid lubricant good for wear resistance on slipping plane can be adopted.
Internal combustion engine use in various unequally loaded situation, such as, is mounted on various Work machine as general purpose engine.In Work machine, there is the Work machine used in dust atmosphere as tillage machinery.Now, general purpose engine uses sometimes in environment comparatively harsh as dust atmosphere.And in general purpose engine, have to reduce manufacturing cost the general purpose engine eliminating lubricating oil filter.Only on the slipping plane of piston, during coating solid lubricant, because being subject to the impact entering the foreign matter engine oil from outside, need consideration can not make slipping plane produces wearing and tearing.
To this, in the known patent documentation of people 1 and patent documentation 2, the such technology of electroless nickel plating process is carried out to slipper.In the technology of known patent documentation 1, to piston for the ring groove chimeric with piston ring carry out electroless nickel plating (Ni-P-B plating) process.Electroless nickel plating film in patent documentation 1 contains the phosphorus of weight percent 0.5 ~ 3% and the boron of weight percent 0.05 ~ 2%, and remainder is nickel.In addition, in the technology of known patent documentation 2, electroless nickel plating (Ni-P-B plating) process is carried out to the slipper of machinery.Electroless nickel plating film in patent documentation 2 contains the phosphorus of weight percent 1.0 ~ 2.0% and the boron of weight percent 0.05 ~ 1.0%, and remainder is nickel.Electroless nickel plating film in known patent documentation 1 and patent documentation 2 self has certain hardness, thus has good wear resistance.
In order to make to contain boron in the composition of electroless nickel plating film, need in electroplating processes liquid, use reductive agent dimethyamine borane (DMAB).But when the temperature of electroplating processes liquid reaches 80 ~ 90 DEG C, DMAB is easy to produce deterioration.In order to alleviate the degradation of DMAB, need to use lead system stablizer.Although content is trace, electroless nickel plating film can contain lead composition.Consider the impact on environment, not containing lead composition in preferred electroless nickel plating film.Therefore people expect to develop in a kind of film containing lead composition, have and the technology of Ni-P-B film with uniform wearability.
To this, there are boron and plumbous electroless nickel plating technology not conforming in the known patent documentation 3 of people.In the technology of known patent documentation 3, electroless nickel plating process is carried out to slide unit.Electroless nickel plating film in patent documentation 3 contains the tungsten of the phosphorus of 1 ~ 4% weight percent, the cobalt of 1 ~ 50% weight percent and 1 ~ 20% weight percent, and remainder is nickel.Compared with Ni-P-B film, the hardness of above-mentioned electroless nickel plating film (Ni-P-Co-W film) is higher, wear resistance is better.Especially the Ni-P-Co-W film in known patent documentation 3 develops to realize following object: its from room temperature to high temperature compared with all having higher hardness in large-temperature range, namely, its hardness reduces less in hot environment.Therefore, the content of its cobalt and tungsten is more.
But, be contained in the cobalt in Ni-P-Co-W film or tungsten is the one of rare metal and price is more expensive.When being formed on the slipping plane of the piston of oil engine by Ni-P-Co-W film more for the content of cobalt or tungsten, become the major reason that oil engine manufacturing cost rises.Such as, as long as the film being applied to the piston in general purpose engine has the wear resistance with Ni-P-B film equal extent.
In addition, for common small-sized universal engine, the top temperature of the periphery of piston is about 200 DEG C.Therefore, the Vickers' hardness Vickers' hardness about Hv600 ~ 700,200 DEG C time of electroless nickel plating film 25 DEG C time be formed on the slipping plane of piston just can be used well about Hv500 ~ 600.On the other hand, the Vickers' hardness Hv of the electroless nickel plating film in patent documentation 3 is 700 ~ 900, is 650 ~ 750 200 DEG C time, therefore higher than required hardness 25 DEG C time.
Like this, when the electroless nickel plating film in patent documentation 3 is used as the film of the piston of oil engine or cylinder, be unfavorable for the manufacturing cost reducing oil engine.
Flat No. 11-303994 of [patent documentation 1] Japanese invention Patent Publication No
Flat No. 8-158058 of [patent documentation 2] Japanese invention Patent Publication No
No. 2007-062069, [patent documentation 3] Japanese invention Patent Publication No
Summary of the invention
In view of this, propose the present invention, the object of the present invention is to provide a kind of be like this suitable for use as the piston of oil engine or the film of cylinder, not containing lead composition and the lower electroless nickel plating film of price.
From technical scheme 1 of the present invention, the slipping plane of the cylinder that the slipping plane of the piston of oil engine or this piston slide therein has electroless nickel plating film, described electroless nickel plating film contains the tungsten of the phosphorus of weight percent 0.6 ~ 2.8%, the cobalt of weight percent 0.5 ~ 1.8% and weight percent 0.005 ~ 0.5%, and remainder is nickel.
[invention effect]
Adopt technical scheme 1 of the present invention, owing to making the cobalt and the tungsten that contain minute quantity in the electroless nickel plating film of the phosphorus containing weight percent 0.6 ~ 2.8% again, so electroless nickel plating film can obtain good rubbing characteristics.That is, the friction resistance due to electroless nickel plating film is less, so not only sliding capability is better but also hardness is higher.Therefore, the slipping plane such as skirt of piston or the portion that is hit such as pin-and-hole, ring groove guarantee to have good wear resistance because being formed with this electroless nickel plating film.
That is, have and the electroless nickel plating film (Ni-P-Co-W film) of Ni-P-B film with uniform wearability, so it is suitable for use as the piston of oil engine or the film of cylinder owing to have employed.And, due to the electroless nickel plating film that the containing ratio that have employed the more expensive cobalt of price or tungsten is few, so be conducive to the manufacturing cost reducing oil engine.Further, owing to not containing lead composition in electroless nickel plating film, so also minimum on the impact of environment.
Shown in patent documentation 3, in electroless nickel plating film that the content of cobalt is more, although the decline of hardness when can prevent high temperature, hardness during normal temperature also can decline.Therefore, in patent documentation 3, hardness during its normal temperature is guaranteed by making it contain tungsten.On the other hand, in technical scheme 1 of the present invention, in the cobalt of the minute quantity not making the hardness of electroless nickel plating film change and the scope of tungsten, find suitable containing ratio.Like this, can not only the containing ratio of cobalt or tungsten be down to seldom, can also obtain and have and the electroless nickel plating film (Ni-P-Co-W film) of Ni-P-B film with uniform wearability.
Accompanying drawing explanation
Fig. 1 is the sectional view of the relation represented between the piston of oil engine of the present invention or cylinder.
Fig. 2 is the sectional view after amplifying the major portion of the piston shown in Fig. 1.
Fig. 3 is the sectional view of the relation between the piston of the oil engine represented in modified example of the present invention or cylinder.
Fig. 4 is the figure of the characteristic of the frictional coefficient of film when representing the content changing cobalt.
Fig. 5 is the figure of the characteristic of the frictional coefficient of film when representing the content changing tungsten.
Fig. 6 is the figure of the characteristic of the frictional coefficient of film when representing the content changing phosphorus.
[description of reference numerals]
10,10A, oil engine; 11, piston; 12, cylinder; 12a, the slipping plane (inner peripheral surface) of cylinder; 13, the slipping plane (periphery) of piston; 20, electroless nickel plating film.
Embodiment
With reference to the accompanying drawings embodiments of the present invention are described.
[embodiment]
As depicted in figs. 1 and 2, oil engine 10 forms by combining the piston 11 be made up of aluminium alloy and the cylinder 12 be made up of aluminium alloy.The periphery 13 of piston 11 is formed with multiple ring groove 14 ~ 16.Chimeric in multiple ring groove 14 ~ 16 have compression ring 17,18 and oil ring 19.Comprise multiple ring groove 14 ~ 16, the whole outside surface of the slipping plane 13 (periphery 13) of piston 11 is all formed with electroless nickel plating film 20.
Fig. 3 represents the oil engine 10A in modified example.Except being formed except electroless nickel plating film 20 on the slipping plane 12a (inner peripheral surface 12a) of its cylinder 12, other structures are same as the oil engine 10 shown in Fig. 1 and Fig. 2.
Like this, the slipping plane 12a of cylinder 12 that the slipping plane 13 of piston 11 or this piston 11 slide therein has electroless nickel plating film 20.
The present inventor etc. know following situation: when containing a small amount of cobalt and tungsten in the electroless nickel plating film 20 making the phosphorus containing weight percent 0.6 ~ 2.8% again, the Ni-P-Co-W system electroless nickel plating film that such price is lower can be obtained, namely, it can not only have uniform wearability roughly same with the Ni-P-B film shown in patent documentation 1, namely, can not only have to be weight percentage 0.5 ~ 3% with phosphorus, boron is weight percentage 0.05 ~ 2%, the remaining roughly same uniform wearability of Ni-P-B film for nickel, and not containing lead composition.
Namely, electroless nickel plating film of the present invention 20 is a kind of like this " Ni-P-Co-W film ": with its entirety be weight percentage 100% time, phosphorus is weight percentage 0.6 ~ 2.8%, cobalt is weight percentage 0.5 ~ 1.8%, tungsten is weight percentage 0.005 ~ 0.5%, remaining be nickel.
Preferred electroless nickel plating film of the present invention 20 is a kind of like this " Ni-P-Co-W film ": with its entirety be weight percentage 100% time, phosphorus is weight percentage 2.0%, cobalt is weight percentage 1.0%, tungsten is weight percentage 0.01%, remaining be nickel.
In addition, in order to the slipping plane 13 or cylinder 12 that improve electroless nickel plating film 20 and piston 11 further slipping plane 12a between stickiness, namely, in order to improve electroless nickel plating film 20 further and be made up of aluminium alloy base material between stickiness, preferably carry out following pre-treatment.This pre-treatment is carried out according to the following steps.
(1) first, prepare the content of phosphorus be weight percentage 5.0 ~ 10.0% Ni-P electroplate liquid (pre-treatment electroplate liquid) and Ni-P-Co-W electroplate liquid of the present invention (plating bath).
(2) pre-treatment Ni-P electroplate liquid then, is utilized to carry out Ni-P electroplating processes to slipping plane 13 or slipping plane 12a.That is, slipping plane 13 or slipping plane 12a form Ni-P film (preprocessing layer).
(3) last, utilize the surface of Ni-P-Co-W electroplate liquid of the present invention to above-mentioned Ni-P film (preprocessing layer) to carry out Ni-P-Co-W electroplating processes.Interface between two-layer plated film does not mutually mix and is state separately.That is, slipping plane 13 or slipping plane 12a are formed Ni-P film (preprocessing layer) and the such double-layer films of Ni-P-Co-W film (electroless nickel plating film 20).
Electroless nickel plating film as above-mentioned preprocessing layer is so a kind of " Ni-P film ": with its entirety be weight percentage 100% time, phosphorus is weight percentage 5.0 ~ 10.0%, remaining be nickel.This electroless nickel plating film all has good stickiness with as the aluminium alloy of base material and electroless nickel plating film 20 both sides.The thickness of preprocessing layer is about several μm.
The following detailed description of electroless nickel plating film 20 (omitting its symbol below).In general, the structure of electroless nickel plating film changes because of the difference of the content of phosphorus, and like this, the hardness of film also changes.If the containing ratio of phosphorus is weight percent about 2% time, because film is crystallinity, so the Vickers' hardness Hv of film is about 700 under normal temperature state.If when the containing ratio of phosphorus increases to weight percent more than 4%, because film is amorphism, so the hardness of film declines.Such as, when the containing ratio of phosphorus is weight percentage 10%, the Vickers' hardness Hv of the film under normal temperature state is down to about 500.
As " electroplate liquid " on the basis of electroless nickel plating film, reach and " Ni-P-B " film equal extent to make the hardness of obtained plated film, the content that we have selected phosphorus should " electroplate liquid " (hereinafter referred to as " without electrolysis Ni-P electroplate liquid ") weight percent about 2%, has had a fling at film and determine the rubbing characteristics of sample to this without adding metal ingredient in electrolysis Ni-P electroplate liquid.
As the metal without the added ingredients in electrolysis Ni-P electroplate liquid, such as there are copper (Cu), iron (Fe), zinc (Zn), cobalt (Co), tungsten (W), can select according to the difference of application target.In the present invention, because its object is process the slipping plane of piston and cylinder, we are mainly conceived to can improve the thermotolerance of film and the cobalt (Co) of hardness and tungsten (W) composition and this composition Co, W be added in Ni-P electroplate liquid.As the providing source of the cobalt added in Ni-P electroplate liquid, we used rose vitriol, in addition, as the providing source of tungsten, we used sodium wolframate.
Further, for the addition of the cobalt added in Ni-P electroplate liquid and tungsten, We conducted following adjustment.That is, our starting point is: although the containing ratio of the boron (B) in Ni-P-B film is weight percentage about 0.05% so a small amount of, compared with Ni-P film, the former rubbing characteristics is better.Make containing a small amount of mentioned component Co, W in Ni-P electroplate liquid by adjusting the amount of providing source, we generate Ni-P-Co-W electroplate liquid.Utilize this Ni-P-Co-W electroplate liquid on base material, form Ni-P-Co-W film.
For the rubbing characteristics of obtained electroless nickel plating film, we utilize ball-disk-type friction tester measure and have rated the change of the frictional coefficient relative to sliding distance.The effect obtained as adding mentioned component Co, W in Ni-P electroplate liquid, we obtain following test-results through above-mentioned test.
In Ni-P electroplate liquid, add the Co of weight percent about 1.0% and generate Ni-P-Co electroplate liquid, when utilizing this electroplate liquid to form Ni-P-Co film on base material, with the Ni-P electroplate liquid based on utilizing and on base material, form Ni-P film situation compared with, the rubbing characteristics of Ni-P-Co film is improved, and then rubbing characteristics is a bit weaker compared with Ni-P-B film.
In addition, in Ni-P electroplate liquid, add the W of weight percent about 0.01% and generate Ni-P-W electroplate liquid, when utilizing this electroplate liquid to form Ni-P-W film on base material, with form the situation of Ni-P film on base material compared with, the rubbing characteristics of Ni-P-W film is improved, and then rubbing characteristics is a bit weaker compared with Ni-P-B film.
But, we know following news from test: in Ni-P electroplate liquid, add the Co of weight percent about the 1.0% and W of weight percent about 0.01% and generate Ni-P-Co-W electroplate liquid, when utilizing this electroplate liquid to form Ni-P-Co-W film on base material, with form the situation of Ni-P film or Ni-P-B film on base material compared with, the rubbing characteristics of Ni-P-Co-W film is improved.
Like this, for Ni, make the content of P be weight percentage 2.0%, the content of Co is weight percentage 1.0%, the content of W is weight percentage 0.01%, and when changing the containing ratio of P, Co, W as benchmark, be weight percentage 0.6 ~ 2.8% at the containing ratio of P, the containing ratio of Co is weight percentage 0.5 ~ 1.8%, the containing ratio of W is weight percentage in the scope of 0.005 ~ 0.5%, obtain the Ni-P-Co-W film with the equal or better rubbing characteristics with Ni-P-B film.
In general, people know much such example: most metal is when in nanostructure, and people can find that it has special performance.In the present invention, the crystallization particle diameter of the electroless nickel plating film based on is the such nano-scale size of 20 ~ 100nm.Therefore, can consider that electroless nickel plating film of the present invention also has special effect because of nanostructure.
The present inventor etc. have carried out the experiment of the effect for confirming the invention described above.The following describes experimental example 1 ~ 2 of the present invention.In addition, the present invention is not limited to experimental example 1 ~ 2.
(experimental example 1)
Electroless plating nickel plating solution employs the Ni-P plating solution (trade mark is SEK-795) that Japanese KANIGEN Co., Ltd. produces.This electroless plating nickel plating solution backward in add the sodium wolframate of the rose vitriol as the providing source of cobalt and the providing source as tungsten and generate Ni-P-Co-W electroplate liquid.This Ni-P-Co-W electroplate liquid is utilized on the aluminium base of regulation, to form Ni-P-Co-W film and make multiple sample afterwards.But in experimental example 1, be aluminium base by siliceous aluminium sheet (AC8A) substitute.
The content representation of above-mentioned multiple sample in table 1 below.That is, as shown in table 1, the containing ratio of each composition in multiple sample is through change.Multiple sample is comparative example 1 ~ 2 and embodiment 1 ~ 15.
[table 1]
As shown in Table 1 above, the content of multiple sample is as follows.
Comparative example 1 is the film (without B component) of " Ni-weight percent 2.0%P ".
Comparative example 2 is the film (having B component) of " Ni-weight percent 2.0%P-weight percent 0.05%B ".
Embodiment 1 is the film (without Co composition) of " Ni-weight percent 2.0%P-weight percent 0.01%W ".
Embodiment 2 is the film of " Ni-weight percent 2.0%P-weight percent 0.5%Co-weight percent 0.01%W ".
Embodiment 3 is the film of " Ni-weight percent 2.0%P-weight percent 1.0%Co-weight percent 0.01%W ".
Embodiment 4 is the film of " Ni-weight percent 2.0%P-weight percent 1.8%Co-weight percent 0.01%W ".
Embodiment 5 is the film of " Ni-weight percent 2.0%P-weight percent 3.0%Co-weight percent 0.01%W ".
Embodiment 6 is the film (without W composition) of " Ni-weight percent 2.0%P-weight percent 1.0%Co ".
Embodiment 7 is the film of " Ni-weight percent 2.0%P-weight percent 1.0%Co-weight percent 0.005%W ".
Embodiment 8 and embodiment 3 are same film.
Embodiment 9 is the film of " Ni-weight percent 2.0%P-weight percent 1.0%Co-weight percent 0.5%W ".
Embodiment 10 is the film of " Ni-weight percent 2.0%P-weight percent 1.0%Co-weight percent 0.8%W ".
Embodiment 11 is the film (without P composition) of " Ni-weight percent 1.0%Co-weight percent 0.01%W ".
Embodiment 12 is the film of " Ni-weight percent 0.6%P-weight percent 1.0%Co-weight percent 0.01%W ".
Embodiment 13 and embodiment 3 are same film.
Embodiment 14 is the film of " Ni-weight percent 2.8%P-weight percent 1.0%Co-weight percent 0.01%W ".
Embodiment 15 is the film of " Ni-weight percent 4.0%P-weight percent 1.0%Co-weight percent 0.01%W ".
In these samples, the Vickers' hardness Hv of the film of major sample is as follows 20 DEG C time.
The Vickers' hardness Hv of comparative example 1 is 650 ~ 700.
The Vickers' hardness Hv of comparative example 2 is 650 ~ 750.
The Vickers' hardness Hv of embodiment 3, embodiment 8, embodiment 13 is 650 ~ 700.
In addition, 200 DEG C time, the Vickers' hardness Hv of the film of major sample is as follows.
The Vickers' hardness Hv of comparative example 1 is 500 ~ 600.
The Vickers' hardness Hv of comparative example 2 is 500 ~ 700.
The Vickers' hardness Hv of embodiment 3, embodiment 8, embodiment 13 is 500 ~ 600.
The frictional coefficient of the film of above-mentioned multiple sample by ball-dish test determination.This ball-dish test is: make the temperature of film under the condition of 20 DEG C, this SUJ ball is slided, to measure the change of the kinetic friction coefficient relative to sliding distance in SUJ ball under unlubricated state against the surface of film.Wherein, the diameter of SUJ ball is 10mm, applied load is 400gf, sliding velocity is 63mm/s.Measurement result represents in Fig. 4 ~ Fig. 6, and in Fig. 4 ~ Fig. 6, transverse axis represents sliding distance, the longitudinal axis represents frictional coefficient (kinetic friction coefficient), and this Fig. 4 ~ Fig. 6 represents the change of the kinetic friction coefficient relative to sliding distance.
Fig. 4 represent change cobalt (Co) content time frictional coefficient characteristic.In the diagram, comparative example 1,2 and embodiment 1 ~ 5 are contrasted.According to measurement result, compare with comparative example 2 with comparative example 1, embodiment 1 and embodiment 5 do not have much effects improving in sliding properties (frictional coefficient).But compared with comparative example 1 or comparative example 2, the effect of embodiment 2 ~ 4 in raising sliding properties is particularly remarkable.
Fig. 5 represent change tungsten (W) content time frictional coefficient characteristic.In Figure 5, comparative example 1,2 and embodiment 6 ~ 10 are contrasted.According to measurement result, compared with comparative example 1 or comparative example 2, embodiment 6 and embodiment 10 do not have much effects in raising sliding properties.But compared with comparative example 1 or comparative example 2, embodiment 7, embodiment 8 (being equivalent to embodiment 3), embodiment 9 effect in raising sliding properties is particularly remarkable.
Fig. 6 represent change phosphorus (P) content time frictional coefficient characteristic.In figure 6, comparative example 1,2 and embodiment 11 ~ 15 are contrasted.According to measurement result, compared with comparative example 1 or comparative example 2, embodiment 11 and embodiment 15 do not have much effects in raising sliding properties.But compared with comparative example 1 or comparative example 2, embodiment 12, embodiment 13 (being equivalent to embodiment 3), embodiment 14 effect in raising sliding properties is particularly remarkable.
That is, can learn thus: the content Co and W individually being added to phosphorus be weight percentage 2% without in electrolysis Ni-P electroplate liquid time, in raising sliding properties, there is no much effects.But, the content Co and W being added simultaneously to phosphorus be weight percentage 2% without in electrolysis Ni-P electroplate liquid time, then obviously can improve sliding properties (frictional coefficient).And, when the containing ratio of Co and the containing ratio of W less time, improving, the effect in sliding properties is particularly remarkable.
(experimental example 2)
Prepared several with for the equal sample piston of the piston in the general purpose engine of reality.On the whole surface of these sample piston, define film equal with the comparative example 1 in above-mentioned experimental example 1, comparative example 2 and embodiment 3 respectively.The thickness of this film is 15 μm.Afterwards each sample piston is assembled in general purpose engine respectively, butterfly is being opened to maximum and zero load condition non-stop run respectively 50 hours.Determine the average abrasion amount in the skirt section of each piston afterwards.
General purpose engine employs the small-sized universal engine that Honda Motor Co. produces.The major dimension of this engine is as follows: engine title, GX25; Form, air cooling 4 stroke single-cylinder OHC; Gross exhaust gas, 25cm
3; Cylinder bore, 35mm; Travel of piston, 26mm.
The content representation of the sample in experimental example 2 is in following table 2.That is, the containing ratio of each composition in multiple sample (piston) is as shown in table 2.Multiple sample is comparative example A ~ B and embodiment A.
[table 2]
As shown in Table 2 above, the content of multiple sample is as follows.
The composition of the film of comparative example A is the film of " Ni-weight percent 2.0%P ".
The composition of the film of comparative example B is " Ni-weight percent 2.0%P-weight percent 0.05%B ".
The composition of the film of embodiment A is " Ni-weight percent 2.0%P-weight percent 1.0%Co-weight percent 0.01%W ".
That is, the composition of the film of comparative example A is identical with the composition of above-mentioned comparative example 1.The composition of the film of comparative example B is identical with the composition of above-mentioned comparative example 2.The composition of the film of embodiment A is identical with the composition of above-described embodiment 3.
From measurement result, as shown in table 2, the average abrasion amount of comparative example A is 8.7 μm, the average abrasion amount of comparative example B is 3.5 μm, the average abrasion amount of embodiment A is 3.3 μm.Namely, thin film composition is the average abrasion amount of the embodiment A of " Ni-weight percent 2.0%P-weight percent 1.0%Co-weight percent 0.01%W ", is that the average abrasion amount of the comparative example B of " Ni-weight percent 2.0%P-weight percent 0.05%B " is roughly equal with thin film composition.Its reason can be thought of as and obtain such electroless nickel plating film: by the cobalt and the tungsten that make the electroless nickel plating film containing micro-nickel contain minute quantity again, not containing lead composition in this electroless nickel plating film, its rubbing characteristics is good.
[industrial applicibility]
Electroless nickel plating film in the present invention can be applicable on the embedding cylinder of piston of general purpose engine well.
Claims (1)
1. an oil engine, the slipping plane of the cylinder that the slipping plane of the piston of described oil engine or this piston slide therein has electroless nickel plating film, it is characterized in that,
Described electroless nickel plating film contains the tungsten of the phosphorus of weight percent 0.6 ~ 2.8%, the cobalt of weight percent 0.5 ~ 1.8% and weight percent 0.005 ~ 0.5%, and remainder is nickel, and the crystallization particle diameter of described electroless nickel plating film is 20 ~ 100nm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-074020 | 2012-03-28 | ||
| JP2012074020A JP5700846B2 (en) | 2012-03-28 | 2012-03-28 | Internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103361638A CN103361638A (en) | 2013-10-23 |
| CN103361638B true CN103361638B (en) | 2016-03-09 |
Family
ID=49363871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310074037.4A Active CN103361638B (en) | 2012-03-28 | 2013-03-08 | Oil engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5700846B2 (en) |
| CN (1) | CN103361638B (en) |
| IN (1) | IN2013CH01367A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015209887A1 (en) * | 2015-05-29 | 2016-12-01 | Mahle International Gmbh | Piston for a cylinder of an internal combustion engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240238A (en) * | 1999-07-12 | 2000-01-05 | 西北有色金属研究院 | Self-catalytic nickel alloy plating layer and plating process thereof |
| JP2007162069A (en) * | 2005-12-14 | 2007-06-28 | Nippon Kanizen Kk | Electroless-plated nickel film, machine component having the film, and electroless plating bath |
| CN101899690A (en) * | 2010-02-08 | 2010-12-01 | 长沙力元新材料有限责任公司 | Multi-porous alloy material and method for preparing same |
| CN101928967A (en) * | 2010-08-30 | 2010-12-29 | 赵汝山 | Cobalt-tungsten-nickel-phosphorus alloy electroplating liquid |
| CN102144106A (en) * | 2008-09-05 | 2011-08-03 | Ntn株式会社 | Rolling bearing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5111023A (en) * | 1974-07-18 | 1976-01-28 | Toray Industries | GOKINJISEIKIROKUBAITAINO SEIZOHO |
| JPS56142867A (en) * | 1980-04-03 | 1981-11-07 | Nec Corp | Nonelectrolytic plating bath |
| JPS6081815A (en) * | 1983-10-13 | 1985-05-09 | Alps Electric Co Ltd | Non-electrolytic plating bath |
| JPH05141533A (en) * | 1991-11-20 | 1993-06-08 | Nippon Mekki Kogyo Kk | Piston for internal combustion engine |
| DE69830381T2 (en) * | 1997-01-20 | 2005-10-13 | Taiho Kogyo Co., Ltd., Toyota | SLIDING PART, METHOD OF SURFACE TREATMENT OF THE SLIDE PART, AND TURN PISTON BUCKET |
-
2012
- 2012-03-28 JP JP2012074020A patent/JP5700846B2/en active Active
-
2013
- 2013-03-08 CN CN201310074037.4A patent/CN103361638B/en active Active
- 2013-03-27 IN IN1367CH2013 patent/IN2013CH01367A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240238A (en) * | 1999-07-12 | 2000-01-05 | 西北有色金属研究院 | Self-catalytic nickel alloy plating layer and plating process thereof |
| JP2007162069A (en) * | 2005-12-14 | 2007-06-28 | Nippon Kanizen Kk | Electroless-plated nickel film, machine component having the film, and electroless plating bath |
| CN102144106A (en) * | 2008-09-05 | 2011-08-03 | Ntn株式会社 | Rolling bearing |
| CN101899690A (en) * | 2010-02-08 | 2010-12-01 | 长沙力元新材料有限责任公司 | Multi-porous alloy material and method for preparing same |
| CN101928967A (en) * | 2010-08-30 | 2010-12-29 | 赵汝山 | Cobalt-tungsten-nickel-phosphorus alloy electroplating liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103361638A (en) | 2013-10-23 |
| JP2013204084A (en) | 2013-10-07 |
| JP5700846B2 (en) | 2015-04-15 |
| IN2013CH01367A (en) | 2015-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6122488B2 (en) | Sliding member | |
| US5545489A (en) | Multi-layer sliding bearing having excellent fretting property | |
| US20080187260A1 (en) | Composite antifriction bearing material | |
| JP5788968B2 (en) | Anti-fretting layer | |
| JP2013534963A5 (en) | ||
| JP2013534963A (en) | Multi-layer radial bearing with corrosion protection layer | |
| US5346668A (en) | Copper based alloy for wear resistant sliding layer and sliding member | |
| CN105940127B (en) | Sliding mechanism | |
| JPH09125176A (en) | Copper plain bearing material and plain bearing for internal combustion engine | |
| US6357918B1 (en) | Sliding bearing and sliding bearing structure | |
| US8430571B2 (en) | Sliding bearing shell for engine applications | |
| WO2019130553A1 (en) | Low-friction sliding mechanism | |
| US5429876A (en) | Copper-lead based bearing alloy material excellent in corrosion resistance and a method of producing the same | |
| JP6424951B2 (en) | Sliding component and sliding structure | |
| CN103361638B (en) | Oil engine | |
| JP2013007395A (en) | Al alloy bearing | |
| CN101851712B (en) | Alloy coating bushing | |
| CN201771968U (en) | Bearing bush with double hard tin plating layers | |
| EP3460095B1 (en) | Sliding member | |
| JPH04175442A (en) | Sliding member | |
| CN104789822B (en) | Aluminum base alloy of sliding bearing and preparation method for aluminum base alloy | |
| CN102041413A (en) | Novel medium stannum aluminum alloy bearing bush material | |
| JP2000320673A (en) | Low friction carbon film | |
| JP3005263B2 (en) | Sliding member | |
| JP3253016B2 (en) | Piston with improved wear resistance of the contact surface with piston ring and combination of piston and cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |