CN106756160A - A kind of preparation method of cermet material - Google Patents
A kind of preparation method of cermet material Download PDFInfo
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- CN106756160A CN106756160A CN201610990811.XA CN201610990811A CN106756160A CN 106756160 A CN106756160 A CN 106756160A CN 201610990811 A CN201610990811 A CN 201610990811A CN 106756160 A CN106756160 A CN 106756160A
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- China
- Prior art keywords
- powder
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- epoxy resin
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- 239000000463 material Substances 0.000 title claims abstract description 24
- 239000011195 cermet Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 14
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- 229910009043 WC-Co Inorganic materials 0.000 claims description 8
- 238000005245 sintering Methods 0.000 abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 239000006104 solid solution Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- 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
- C23C4/06—Metallic material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of preparation method of cermet material, it includes：(1) by WC powder and Co powder according to weight ratio (80~90):The ratio mixing of (20 10), grinds at least 2 hours；(2) carbon dust is added, continues to grind at least 4 hours；(3) account for WC powder and Co powder gross masses 30 100% epoxy resin organic binder is added, is well mixed, dried at 100 140 DEG C, obtain mixture；(4) under hydrogen shield, sintered at 850 1350 DEG C at least 1 hour, be cooled to room temperature；(5) particle of 200 325 mesh is broken into, WC Co cermet materials are obtained.The preparation method of cermet material of the present invention, adds carbon dust and epoxy resin adhesive in sintering process, eliminates η (Co3W3C、Co6W6) etc. C mutually produce, and produce the γ solid solution with Co as base, greatly strengthen the performance of material.
Description
Technical field
The present invention relates to technical field of metal material, more particularly to a kind of preparation method of cermet material.
Background technology
The hot-spraying coating of tungsten carbide/cobalt cermet, due to its good hardness and toughness, is widely used in aviation
The fields such as space flight, automobile, metallurgy, electric power, to strengthen the reparation of the anti-wear performance and wearing terrain of parent metal.Such as, aviation
The condition of work of engine part is very severe (high temperature, rotating speed high, vibration, high load capacity), but by adhesive wear, abrasive wear,
The abrasion of the several types such as corrosive wear and fatigue wear, engine performance and service life are affected.Calmed the anger in titanium alloy
One layer of 0.25mm of spraying thick tungsten carbide coating on the damping platform surface of machine blade, leaf longevity was extended to up to ten thousand by 100 hours
Hour.Again such as：Hot spraying WC hard alloy coating has relative to plating hard chromium in wearability, corrosion resistance, fatigue durability
Obvious advantage, and the production time is short, low cost, environment are good.Hard chrome plating coating can be substituted completely in some application fields,
Boeing-767 and 777 undercarriages currently use HVOF spraying WC-CoCr coatings and substitute hard chromium.
However, WC/Co powder can occur decarburization and the decomposition of phase in thermal spray process, occurs W in coating2C, η
(Co3W3C、Co6W6C), or even tungsten, this fracture property for causing coating and polishing machine reduction.WC grain in starting powder
The properties such as size, phase composition, pattern and size are very big to the phase composition of coating and performance impact.The characteristic of hot spray powder is often
It is different and different because of its flouring technology method.
The content of the invention
It is an object of the invention to propose a kind of preparation method of cermet material, the shield effectiveness for being capable of material is carried
It is high.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of preparation method of cermet material, it includes：
(1) by WC powder and Co powder according to weight ratio (80~90):The ratio mixing of (20-10), grinding at least 2 is small
When；
(2) carbon dust is added, continues to grind at least 4 hours；
(3) the epoxy resin organic binder of the 30-100% for accounting for WC powder and Co powder gross masses is added, is well mixed,
Dried at 100-140 DEG C, obtain mixture；
(4) under hydrogen shield, sintered at 850-1350 DEG C at least 1 hour, be cooled to room temperature；
(5) particle of 200-325 mesh is broken into, WC-Co cermet materials are obtained.
Sintering temperature of the invention is 850-1350 DEG C.During sintering, temperature has important to superfines pattern and phase composition
Influence.Analyzed in terms of degree of crushing and powder morphology two, preferably 1250 DEG C of the present invention, it is to prepare superfine WC-Co thermal jet
The preferable sintering temperature of powder is applied, 0.68 μm of ultra-fine grain WC powder and 2.39 μm of Co powder can be prepared by mixing into granularity is
45-75 μm of WC-Co hot spray powders.
Preparation method of the invention adds epoxy resin organic binder bond, on the one hand can closely bond mixed powder agglomerating
Shape, with respect to the dried powder of the bulk of adding additives, its surface area for being exposed to air is substantially reduced, and reduces powder in sintering
When WC particle oxidation and decarbonizations；On the other hand, binding agent is decomposed and produces carbon in high temperature sintering, is made powder sintered in carbonization
Atmosphere, η (Co when can effectively prevent ultra-fine powder sintering3W3C、Co6W6) etc. C mutually produce, beneficial to preparing bulky grain hot spraying powder
End.Broken powder before sintering, binding agent effect is reduced.
Epoxy resin adhesive of the present invention, belongs to conventional known materials, and the present invention does not do restriction in detail to it,
Those skilled in the art can in the range of epoxy resin adhesive disclosed in prior art unrestricted choice.
Preparation method of the invention adds carbon dust, the addition of carbon dust, except very small amount is dissolved in Binder Phase Co at home and abroad, ultra-fine
It is main in WC-Co hot spray powders to exist with free state, the decomposition of WC when the presence of free carbon can prevent to sinter.From broken difficulty or ease
Degree sees, the sample of same temperature sintering, plus carbon dust sample than not plus the sintered sample of carbon dust will be easily broken.Particularly exist
In the case that carbon dust and organic binder bond are all added, the sample after sintering is easiest to crush.
The content of carbon dust of the present invention, is not specially limited, it is preferred that its consumption is WC powder and the total matter of Co powder
Amount 10-60%.
Preparation method of the present invention, there is a kind of color deeper, translucent, fuzzy in sintered powder in it
State material, through microcell energy spectrum analysis, the γ solid solution mainly with Co as base.It is conducive to the raising of hot spray powder performance.
The preparation method of cermet material of the present invention, adds carbon dust and epoxy resin to cohere in sintering process
Agent, eliminates η (Co3W3C、Co6W6) etc. C mutually produce, and produce the γ solid solution with Co as base, greatly strengthen the property of material
Energy.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of preparation method of cermet material, it includes：
(1) WC powder and Co powder are compared 80 according to weight:20 ratio mixing, grinds at least 2 hours；
(2) 30% carbon dust for accounting for WC powder and Co powder gross masses is added, continues to grind at least 4 hours；
(3) account for WC powder and Co powder gross masses 30% epoxy resin organic binder is added, is well mixed,
Dried at 100 DEG C, obtain mixture；
(4) under hydrogen shield, sintered at 850 DEG C at least 1 hour, be cooled to room temperature；
(5) particle of 200-325 mesh is broken into, WC-Co cermet materials are obtained.
Embodiment 2
A kind of preparation method of cermet material, it includes：
(1) WC powder and Co powder are compared 90 according to weight:10 ratio mixing, grinds at least 2 hours；
(2) WC powder and the carbon dust of Co powder gross mass 10% are added, continues to grind at least 4 hours；
(3) account for WC powder and Co powder gross masses 100% epoxy resin organic binder is added, is well mixed,
Dried at 140 DEG C, obtain mixture；
(4) under hydrogen shield, sintered at 1350 DEG C at least 1 hour, be cooled to room temperature；
(5) particle of 200-325 mesh is broken into, WC-Co cermet materials are obtained.
Embodiment 3
A kind of preparation method of cermet material, it includes：
(1) WC powder and Co powder are compared 83 according to weight:17 ratio mixing, grinds at least 2 hours；
(2) WC powder and the carbon dust of Co powder gross mass 20% are added, continues to grind at least 4 hours；
(3) account for WC powder and Co powder gross masses 60% epoxy resin organic binder is added, is well mixed,
Dried at 120 DEG C, obtain mixture；
(4) under hydrogen shield, sintered at 1250 DEG C at least 1 hour, be cooled to room temperature；
(5) particle of 200-325 mesh is broken into, WC-Co cermet materials are obtained.
Comparative example 1
The epoxy resin adhesive of embodiment 1 is omitted, remaining is same as Example 1.
Through inspection, embodiment 1-3 adds carbon dust and epoxy resin adhesive in sintering process, eliminates η (Co3W3C、
Co6W6) etc. C mutually produce, and produce the γ solid solution with Co as base, greatly strengthen the performance of material.
And there is η (Co in comparative example 13W3C、Co6W6) etc. C mutually produce, do not produce the γ solid solution with Co as base, therefore
Its poor-performing.
The comparative illustration of comparative example 1 and embodiment 1-3, adds epoxy resin adhesive in sintering method of the invention, produce
Raw technique effect far surpasses the expection of those skilled in the art, which overcomes the defect of prior art.
Claims (1)
1. a kind of preparation method of cermet material, it includes：
(1) by WC powder and Co powder according to weight ratio (80~90):The ratio mixing of (20-10), grinds at least 2 hours；
(2) carbon dust is added, continues to grind at least 4 hours；
(3) the epoxy resin organic binder of the 30-100% for accounting for WC powder and Co powder gross masses is added, is well mixed,
Dried at 100-140 DEG C, obtain mixture；
(4) under hydrogen shield, sintered at 850-1350 DEG C at least 1 hour, be cooled to room temperature；
(5) particle of 200-325 mesh is broken into, WC-Co cermet materials are obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990811.XA CN106756160A (en) | 2016-11-10 | 2016-11-10 | A kind of preparation method of cermet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610990811.XA CN106756160A (en) | 2016-11-10 | 2016-11-10 | A kind of preparation method of cermet material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106756160A true CN106756160A (en) | 2017-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610990811.XA Pending CN106756160A (en) | 2016-11-10 | 2016-11-10 | A kind of preparation method of cermet material |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557637A (en) * | 2017-08-11 | 2018-01-09 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline diamond complex |
| CN111850370A (en) * | 2020-07-31 | 2020-10-30 | 河海大学 | A kind of preparation method of coarse-grained WC-Co cemented carbide |
| CN114570924A (en) * | 2022-04-29 | 2022-06-03 | 矿冶科技集团有限公司 | Binder, 5-15 micron tungsten carbide powder and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101117673A (en) * | 2007-09-13 | 2008-02-06 | 上海大学 | Preparation method of cemented carbide containing plate-like tungsten carbide grains |
| CN101338383A (en) * | 2007-07-06 | 2009-01-07 | 湖南世纪特种合金有限公司 | Method for preparing high-density cemented carbide |
| US20090260482A1 (en) * | 2005-10-11 | 2009-10-22 | Baker Hughes Incorporated | Materials for enhancing the durability of earth-boring bits, and methods of forming such materials |
| US20120210822A1 (en) * | 2009-11-13 | 2012-08-23 | Igor Yuri Konyashin | Cemented carbide and process for producing same |
| CN102912206A (en) * | 2012-10-27 | 2013-02-06 | 株洲肯特硬质合金有限公司 | Method for manufacturing coarse grain wolfram carbide hard alloy |
| CN106065449A (en) * | 2016-07-29 | 2016-11-02 | 柳州豪祥特科技有限公司 | A kind of preparation technology of WC Co series hard metal |
-
2016
- 2016-11-10 CN CN201610990811.XA patent/CN106756160A/en active Pending
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| US20090260482A1 (en) * | 2005-10-11 | 2009-10-22 | Baker Hughes Incorporated | Materials for enhancing the durability of earth-boring bits, and methods of forming such materials |
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| CN101117673A (en) * | 2007-09-13 | 2008-02-06 | 上海大学 | Preparation method of cemented carbide containing plate-like tungsten carbide grains |
| US20120210822A1 (en) * | 2009-11-13 | 2012-08-23 | Igor Yuri Konyashin | Cemented carbide and process for producing same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557637A (en) * | 2017-08-11 | 2018-01-09 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline diamond complex |
| CN107557637B (en) * | 2017-08-11 | 2019-04-16 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline diamond complex |
| CN111850370A (en) * | 2020-07-31 | 2020-10-30 | 河海大学 | A kind of preparation method of coarse-grained WC-Co cemented carbide |
| CN114570924A (en) * | 2022-04-29 | 2022-06-03 | 矿冶科技集团有限公司 | Binder, 5-15 micron tungsten carbide powder and preparation method thereof |
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Application publication date: 20170531 |