CN106544621A - A kind of preparation method of composite anti-wear coating - Google Patents
A kind of preparation method of composite anti-wear coating Download PDFInfo
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- CN106544621A CN106544621A CN201611015480.4A CN201611015480A CN106544621A CN 106544621 A CN106544621 A CN 106544621A CN 201611015480 A CN201611015480 A CN 201611015480A CN 106544621 A CN106544621 A CN 106544621A
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- wear
- composite anti
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 37
- 238000007750 plasma spraying Methods 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000498 ball milling Methods 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 238000001694 spray drying Methods 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 8
- 229910010271 silicon carbide Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 229910003465 moissanite Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of preparation method of composite anti-wear coating, which adopts plasma spraying equipment, carries out SiC Cr described in plasma spraying to the impeller or surface of shell of the Pulp pump2O3‑Si3N4Composite ceramic powder, obtains SiC Cr in the impeller or surface of shell of Pulp pump2O3‑Si3N4Composite anti-wear coating.The composite coating can improve the anti-wear performance of matrix.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of SiC-Cr2O3-Si3N4The preparation side of composite anti-wear coating
Method.
Background technology
Abrasion is one of three kinds of main causes (abrasion, corrosion and fatigue) of metal parts failure.Economy caused by it
Loss is very huge, the numeral that such as U.S. announces for 1981, and it is beautiful that the loss for being caused due to abrasion every year is up to 100,000,000,000
Unit.Wherein about 20,000,000,000 dollars of material consumption, equivalent to the 7% of material annual production.As material wear ability is poor, China is big
The Loss of Life of amount fundamental parts is generally significantly less than the level of external advanced product, therefore directly and indirectly economic loss
And it is very surprising.
Only with regard to metallurgical mine, agricultural machinery, coal, electric power and the incomplete statistics of five industrial departments of building materials, it is annual merely due to
Abrasive wear and the spare part that requires supplementation with just up to 1,000,000 tons of steel, equivalent to 15～2,000,000,000 RMB.And for example mechanical industry is annual
Steel used, there are about half be consume in the production of spare part, and the major part in spare part be as wear-out life is not high and
Failure, such as from about 40% agricultural machinery and implement spare part is consumed due to abrasive wear, and about 30% seamless steel tube for boiler is due to corrosion mill
Loss effect.
In metallurgical mine production, the operating mode and use environment of machinery is very severe, and wear out failure is the master of mechanical failure
Want reason.By taking slurry pump as an example, it is the remaining CHARACTERISTICS OF TAILINGS SAND mud after the washup extracted, in mud containing part hardness compared with
High washed ore, grit and larger stone, and wherein need when transporting mud in addition also containing corrosive materials such as sulphur
Pressure head that will be higher, thus in pump fluid speed it is very high.With larger impulsive force.These working conditions determine Pulp pump
The abrasion of various ways will can be born when in use, have very high mechanical tenacity and intensity again, thus to pump flow passage components
Material propose very high requirement.But the performance of homogenous material be difficult to meet it is this to have a very high mechanical strength, and
Have the capability of doing sth the requirement of mill, corrosion resistant.
The generation of hot-spraying technique and composite, is to solve this problem to open a piece of new prospect.For example, will be resistance to
Mill ceramic material is sprayed on impact-resistant metal material, and bi-material is learnt from other's strong points to offset one's weaknesses, and is had complementary advantages, can be met machinery and set
The standby mechanical load for increasingly improving and the rigors to abrasion resistance.
Thermal spraying composite anti-wear coating success it is critical only that wearability, but sprayed on material is had with the property of coating
Very big difference, so, selection can only be carried out according to the existing property of sprayed on material, be needed in a large number as the wearability of wear-resistant coating
Performance test checking.Wear-resistant coating quality is also affected with coating structure by spraying coating process except relevant with sprayed on material,
This is related to the bond strength and residual thermal stress of coating, high bond strength and the final mesh that low residual thermal stress is hot-spraying technique
's.
The content of the invention
It is an object of the invention to propose a kind of preparation method of composite anti-wear coating, the composite coating can improve base
The anti-wear performance of body.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of preparation method of composite anti-wear coating, which includes：
(1) by Cr2O3Nanometer powder, SiC and Si3N4With water or ethanol according to volume ratio 1:1-2 mixes, and adds diameter 4-
The ZrO of 7mm2Ball-milling medium, stirs 2-8 hours in ball mill；
(2) organic binder is dissolved in into water or ethanol, is configured to organic binder solution, with ball milling after nano SiC-
Cr2O3-Si3N4Powder is well mixed, and stirs into slip, and the slip solid-to-liquid ratio is 1：1-5；
(3) slip described in ultrasonic disperse at least 10 minutes；
(4) slip after the ultrasonic disperse is spray-dried, the EAT of spray drying is 200-300 DEG C, air-out
Temperature is 80-120 DEG C, and rotating speed is 3000-15000 rev/min, and rate of feed is 0.5-1 liter/min, obtains average grain diameter for 30-
60 μm of powder；
(5) powder is processed into 5-10 minutes at 450-750 DEG C, 15-30 minutes is processed at 1000-1200 DEG C,
Obtain SiC-Cr2O3-Si3N4Composite ceramic powder；
(6) substrate surface is carried out sandblasting to be roughened and wash, be dried；
(7) plasma spraying equipment is adopted, SiC-Cr described in plasma spraying is carried out to the base material2O3-Si3N4It is compound
Ceramic powders, obtain SiC-Cr in matrix surface2O3-Si3N4Composite anti-wear coating.
The plasma spraying equipment of the present invention, is the known technology of this area, and the determination of its process conditions can be with root
According to the state of the art, or limited number of time test is determined, and the present invention is no longer defined with regard to which.
Preferably, impeller or housing of the base material of the present invention for Pulp pump.I.e.：
The preparation method of the impeller or shell composite anti-wear coating of a kind of Pulp pump, which includes：
(1) by Cr2O3Nanometer powder, SiC and Si3N4With water or ethanol according to volume ratio 1:1-2 mixes, and adds diameter 4-
The ZrO of 7mm2Ball-milling medium, stirs 2-8 hours in ball mill；
(2) organic binder is dissolved in into water or ethanol, is configured to organic binder solution, with ball milling after nano SiC-
Cr2O3-Si3N4Powder is well mixed, and stirs into slip, and the slip solid-to-liquid ratio is 1：1-5；
(3) slip described in ultrasonic disperse at least 10 minutes；
(4) slip after the ultrasonic disperse is spray-dried, the EAT of spray drying is 200-300 DEG C, air-out
Temperature is 80-120 DEG C, and rotating speed is 3000-15000 rev/min, and rate of feed is 0.5-1 liter/min, obtains average grain diameter for 30-
60 μm of powder；
(5) powder is processed into 5-10 minutes at 450-750 DEG C, 15-30 minutes is processed at 1000-1200 DEG C,
Obtain SiC-Cr2O3-Si3N4Composite ceramic powder；
(6) impeller or surface of shell of Pulp pump are carried out sandblasting to be roughened and wash, be dried；
(7) plasma spraying equipment is adopted, the impeller or surface of shell of the Pulp pump is carried out described in plasma spraying
SiC-Cr2O3-Si3N4Composite ceramic powder, obtains SiC-Cr in the impeller or surface of shell of Pulp pump2O3-Si3N4Complex abrasion-proof
Coating.
Preferably, the SiC-Cr2O3-Si3N4Composite anti-wear coating thickness is 0.2-0.5mm.
Preferably, the SiC-Cr2O3-Si3N4Weight ratio between composite abrasion resistance material is 1:3-10:0.5-2.
Preferably, in the SiC-Cr2O3-Si3N4Plasma spraying NiCrAl between composite anti-wear coating and matrix surface
Primer.The NiCrAl primers are commercially available prod, and those skilled in the art can be commercially available, or oneself processing
Prepare.For example, according to 1-3:1-3:The atomic ratio compounding of 1-3 is obtained.
The present invention adopts SiC-Cr2O3-Si3N4Combination.SiC is due to stable chemical performance, thermal conductivity factor height, thermal expansion system
The little, anti-wear performance of number is good, silicon carbide powder is coated the inwall of turbine impeller or cylinder block, its wearability can be improved and be prolonged
1～2 times of long life；Simultaneously which is heat-resisting, resistance to thermal shock, small volume, lightweight and intensity is high, good energy-conserving effect.Carborundum
Hardness is very big, and Mohs' hardness is 9.5 grades, is only second to diamond (10 grades) most hard in the world, with excellent heat conductivility.Cause
This present invention is by SiC and Cr2O3Combination, its not only anti-wear performance it is outstanding, while with extremely strong Corrosion Protection.
The SiC-Cr that the present invention is obtained2O3-Si3N4Composite anti-wear coating matrix is placed in water sand mixture, is rotated
Wear test, after 24 hours, weighs, and is compared with the weight before abrasion, and abrasion loss rate is less than 0.01%, explanation
Composite coating that the present invention is prepared is wear-resisting and is tightly combined firmly with matrix.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of impeller or housing SiC-Cr of Pulp pump2O3-Si3N4The preparation method of composite anti-wear coating, which includes：
(1) by Cr2O3Nanometer powder, SiC and Si3N4With water or ethanol according to volume ratio 1:1 mixing, adds diameter 4mm's
ZrO2Ball-milling medium, stirs 2 hours in ball mill；
(2) organic binder is dissolved in into water or ethanol, is configured to organic binder solution, with ball milling after nano SiC-
Cr2O3-Si3N4Powder is well mixed, and stirs into slip, and the slip solid-to-liquid ratio is 1：1；
(3) slip described in ultrasonic disperse at least 10 minutes；
(4) slip after the ultrasonic disperse is spray-dried, the EAT of spray drying is 200 DEG C, leaving air temp
For 80 DEG C, rotating speed is 3000 revs/min, and rate of feed is 0.5 liter/min, obtains the powder that average grain diameter is 30 μm；
(5) powder is processed 5 minutes at 450 DEG C, processes 15 minutes at 1000 DEG C, obtain SiC-Cr2O3-
Si3N4Composite ceramic powder；
(6) impeller or surface of shell of Pulp pump are carried out sandblasting to be roughened and wash, be dried；
(7) plasma spraying equipment is adopted, the impeller or surface of shell of the Pulp pump is carried out described in plasma spraying
SiC-Cr2O3-Si3N4Composite ceramic powder, obtains SiC-Cr in the impeller or surface of shell of Pulp pump2O3-Si3N4Complex abrasion-proof
Coating.
Embodiment 2
A kind of impeller or housing SiC-Cr of Pulp pump2O3-Si3N4The preparation method of composite anti-wear coating, which includes：
(1) by Cr2O3Nanometer powder, SiC and Si3N4With water or ethanol according to volume ratio 1:2 mixing, add diameter 7mm's
ZrO2Ball-milling medium, stirs 8 hours in ball mill；
(2) organic binder is dissolved in into water or ethanol, is configured to organic binder solution, with ball milling after nano SiC-
Cr2O3-Si3N4Powder is well mixed, and stirs into slip, and the slip solid-to-liquid ratio is 1：5；
(3) slip described in ultrasonic disperse at least 10 minutes；
(4) slip after the ultrasonic disperse is spray-dried, the EAT of spray drying is 300 DEG C, leaving air temp
For 120 DEG C, rotating speed is 15000 revs/min, and rate of feed is 1 liter/min, obtains the powder that average grain diameter is 60 μm；
(5) powder is processed 10 minutes at 750 DEG C, processes 30 minutes at 1200 DEG C, obtain SiC-Cr2O3-
Si3N4Composite ceramic powder；
(6) impeller or surface of shell of Pulp pump are carried out sandblasting to be roughened and wash, be dried；
(7) plasma spraying equipment is adopted, the impeller or surface of shell of the Pulp pump is carried out described in plasma spraying
SiC-Cr2O3-Si3N4Composite ceramic powder, obtains SiC-Cr in the impeller or surface of shell of Pulp pump2O3-Si3N4Complex abrasion-proof
Coating.
Embodiment 3
A kind of impeller or housing SiC-Cr of Pulp pump2O3-Si3N4The preparation method of composite anti-wear coating, which includes：
(1) by Cr2O3Nanometer powder, SiC and Si3N4With water or ethanol according to volume ratio 1:1.5 mixing, add diameter 5mm
ZrO2Ball-milling medium, stirs 5 hours in ball mill；
(2) organic binder is dissolved in into water or ethanol, is configured to organic binder solution, with ball milling after nano SiC-
Cr2O3-Si3N4Powder is well mixed, and stirs into slip, and the slip solid-to-liquid ratio is 1：3；
(3) slip described in ultrasonic disperse at least 10 minutes；
(4) slip after the ultrasonic disperse is spray-dried, the EAT of spray drying is 250 DEG C, leaving air temp
For 100 DEG C, rotating speed is 12000 revs/min, and rate of feed is 0.7 liter/min, obtains the powder that average grain diameter is 50 μm；
(5) powder is processed 8 minutes at 550 DEG C, processes 20 minutes at 1100 DEG C, obtain SiC-Cr2O3-
Si3N4Composite ceramic powder；
(6) impeller or surface of shell of Pulp pump are carried out sandblasting to be roughened and wash, be dried；
(7) plasma spraying equipment is adopted, the impeller or surface of shell of the Pulp pump is carried out described in plasma spraying
SiC-Cr2O3-Si3N4Composite ceramic powder, obtains SiC-Cr in the impeller or surface of shell of Pulp pump2O3-Si3N4Complex abrasion-proof
Coating.
The SiC-Cr that embodiment 1-3 is obtained2O3-Si3N4Composite anti-wear coating matrix is placed in water sand mixture, is carried out
Rotation wear test, after 24 hours, is weighed, and is compared with the weight before abrasion, and abrasion loss rate is less than 0.01%,
Illustrate that composite coating that embodiment 1-3 is prepared is wear-resisting and is tightly combined firmly with matrix.
Claims (4)
1. a kind of preparation method of composite anti-wear coating, which includes：
(1) by Cr2O3Nanometer powder, SiC and Si3N4With water or ethanol according to volume ratio 1:1-2 mixes, and adds diameter 4-7mm's
ZrO2Ball-milling medium, stirs 2-8 hours in ball mill；
(2) organic binder is dissolved in into water or ethanol, is configured to organic binder solution, with the nano SiC-Cr after ball milling2O3-
Si3N4Powder is well mixed, and stirs into slip, and the slip solid-to-liquid ratio is 1：1-5；
(3) slip described in ultrasonic disperse at least 10 minutes；
(4) slip after the ultrasonic disperse is spray-dried, the EAT of spray drying is 200-300 DEG C, leaving air temp
For 80-120 DEG C, rotating speed is 3000-15000 rev/min, and rate of feed is 0.5-1 liter/min, obtains average grain diameter for 30-60 μm
Powder；
(5) powder is processed into 5-10 minutes at 450-750 DEG C, 15-30 minutes is processed at 1000-1200 DEG C, is obtained
SiC-Cr2O3-Si3N4Composite ceramic powder；
(6) impeller or surface of shell of Pulp pump are carried out sandblasting to be roughened and wash, be dried；
(7) plasma spraying equipment is adopted, SiC- described in plasma spraying is carried out to the impeller or surface of shell of the Pulp pump
Cr2O3-Si3N4Composite ceramic powder, obtains SiC-Cr in the impeller or surface of shell of Pulp pump2O3-Si3N4Composite anti-wear coating.
2. the preparation method of composite anti-wear coating as claimed in claim 1, it is characterised in that described base material is Pulp pump
Impeller or housing.
3. the preparation method of composite anti-wear coating as claimed in claim 1 or 2, it is characterised in that the SiC-Cr2O3It is compound
Wear-resistant coating thickness is 0.2-0.5mm.
4. the preparation method of the composite anti-wear coating as described in one of claim 1-3, it is characterised in that in the SiC-
Cr2O3-Si3N4Plasma spraying NiCrAl primers between composite anti-wear coating and matrix surface.
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| CN201611015480.4A CN106544621A (en) | 2016-11-18 | 2016-11-18 | A kind of preparation method of composite anti-wear coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611015480.4A CN106544621A (en) | 2016-11-18 | 2016-11-18 | A kind of preparation method of composite anti-wear coating |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404434A (en) * | 2014-11-05 | 2015-03-11 | 昆明理工大学 | Ceramic coating of metal material surface and preparation method thereof |
| CN104903486A (en) * | 2012-11-01 | 2015-09-09 | 塞兰涂层公司 | Thermal spraying of ceramic materials |
| CN105648386A (en) * | 2016-02-18 | 2016-06-08 | 中国科学院上海硅酸盐研究所 | Thermal spraying aluminum oxide-yttrium oxide composite ceramic coating and preparing method thereof |
-
2016
- 2016-11-18 CN CN201611015480.4A patent/CN106544621A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104903486A (en) * | 2012-11-01 | 2015-09-09 | 塞兰涂层公司 | Thermal spraying of ceramic materials |
| CN104404434A (en) * | 2014-11-05 | 2015-03-11 | 昆明理工大学 | Ceramic coating of metal material surface and preparation method thereof |
| CN105648386A (en) * | 2016-02-18 | 2016-06-08 | 中国科学院上海硅酸盐研究所 | Thermal spraying aluminum oxide-yttrium oxide composite ceramic coating and preparing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张本等: "陶瓷/金属复合耐磨涂层的性能评价", 《武汉理工大学学报》 * |
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Application publication date: 20170329 |