CN106222656B - Soft or hard alternately composite coating and preparation method thereof for bush material surface - Google Patents

Soft or hard alternately composite coating and preparation method thereof for bush material surface Download PDF

Info

Publication number
CN106222656B
CN106222656B CN201610712259.8A CN201610712259A CN106222656B CN 106222656 B CN106222656 B CN 106222656B CN 201610712259 A CN201610712259 A CN 201610712259A CN 106222656 B CN106222656 B CN 106222656B
Authority
CN
China
Prior art keywords
coating
bush material
soft
material surface
preparation
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.)
Expired - Fee Related
Application number
CN201610712259.8A
Other languages
Chinese (zh)
Other versions
CN106222656A (en
Inventor
曹均
尹忠慰
李虎林
高庚员
崔宇清
王新波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Jiaotong University
Original Assignee
Shanghai Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Jiaotong University filed Critical Shanghai Jiaotong University
Priority to CN201610712259.8A priority Critical patent/CN106222656B/en
Publication of CN106222656A publication Critical patent/CN106222656A/en
Application granted granted Critical
Publication of CN106222656B publication Critical patent/CN106222656B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/341—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one carbide layer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sliding-Contact Bearings (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The present invention provides a kind of soft or hard alternately composite coatings and preparation method thereof for bush material surface, and the composite coating includes the Cu coating, WC coating and MoS set gradually outward by bush material surface2Coating.Cu coating, WC coating are sequentially prepared on bush material surface using flame-spraying；Then MoS is prepared using suspension spray on WC coating2Coating is to get the composite coating.The present invention improves bearing shell wear resistant friction reducing performance the utility model has the advantages that by preparing soft or hard alternate coatings on bush material with following, improves bearing shell bearing capacity, bearing shell embedded performance is improved, to improve bearing shell working life and anti-lock performance.

Description

Soft or hard alternately composite coating and preparation method thereof for bush material surface
Technical field
The invention belongs to metal surface field of engineering technology, and in particular to a kind of soft or hard alternating for bush material surface Composite coating and preparation method thereof.
Background technique
Common copper alloy bearing-bush coefficient of friction high-wearing feature is not strong, and embeddability is poor, easy locking after working long hours.Excellent Friction mechanism performance is the necessary condition of long-life bearing shell, therefore extends bearing shell copper alloy working life mainly from anti-friction wear-resistant It can carry out.At present studies at home and abroad show that wear resistant friction reducing coating uses novel synthetic material more, material is rare and expensive, and Three layers of soft or hard alternate coatings that common single antifriction, wear-resisting property material form are not studied then.
The material for having wear resistant friction reducing double action at present is mostly the new material of synthesis type, expensive and synthesis technology It is complicated.Conventional material performance is single.The advantages of single coating material can effectively be combined using composite coating technology, therefore rationally choosing Selecting material and carrying out three layers of soft or hard alternate coatings of coating formation arranged evenly is novel research contents.
In the prior art, patent document CN 104893450A discloses a kind of bearing shell coating material and spraying process, the painting Layer material is made of following material by weight: polytetrafluoroethylene 3%, molybdenum disulfide 8%, silicon carbide ceramics 10%, graphite 10%, surplus is organic solvent.However, the design coating is single coating, increase when coating crack is generated with the operating condition time Crackle can be expanded rapidly, so as to cause coating failure.And soft or hard alternately composite coating, hard particles are wrapped up by soft coating, it is hard to apply Layer improves bearing capacity, has buffer function between coating, can be effectively reduced and slow down crackle generation.CN103216530A is disclosed A kind of bearing shell with composite high-molecular antifriction coat, the wear-reduced coating is by poly- four that weight percent is 5~10% Vinyl fluoride, 3~7% tungsten disulfide, 6~28% graphite, 1~5% graphene, 2~4% molybdenum disulfide, 1~3% Carbon nanotube, 2~6% corundum, 1~5% diamond dust, 1~3% ceramics, 6~15% titanium oxide, 5~8% Fluorographite, 3~16% fluorinated polyimide resin, 4~10% epoxy resin, 3~20% acrylic resin, 11~ 45% N-Methyl pyrrolidone and 0~8% surface treatment agent for powder composition.Due to MoS2 thermal expansion coefficient and basis material Differ larger, the frictional heat generation when bearing shell work, coating is easy to peel off under thermal environment and shearing force.And the design is by Cu Coating, WC coating are to MoS2 coating transition, and each material thermal expansion coefficient difference is smaller, and Gradient Effect can reduce by thermal expansion coefficient Disbonding problem caused by difference.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of compound paintings of soft or hard alternating for bush material surface Layer and preparation method thereof.By preparing wear resistant friction reducing coating using conventional cheap material in bearing shell copper alloy surface so as to improve axis Watt friction mechanism performance.
The purpose of the present invention is what is be achieved through the following technical solutions:
The present invention provides a kind of soft or hard alternately composite coatings for bush material surface, including by bush material surface Cu coating, WC coating and the MoS set gradually outward2Coating.
Preferably, the Cu coating layer thickness is 15-50 μm, WC coating layer thickness is 15-50 μm, MoS2Coating layer thickness is 15- 50μm；Composite coating overall thickness is no more than 100 μm.
The present invention also provides a kind of preparation methods of soft or hard alternately composite coating for bush material surface, including with Lower step:
A1, it after carrying out blasting treatment to bush material, cleans, drying；
A2, after the bush material after drying is preheated to 150-200 DEG C, using flame-spraying bush material surface successively Prepare Cu coating, WC coating；
A3, suspension spray is used to prepare MoS on WC coating2Coating；
A4, the bush material with three-layer coating is cleaned, is dried to get the composite coating.
Preferably, the roughness of the bush material after the blasting treatment is RZ 25-100 μm.
Preferably, in step A2, the preparation Cu coating specifically uses following methods: adjust flame-spraying oxygen pressure for 0.8~1Mpa, acetylene pressure 0.07Mpa, flame-spraying distance are 250mm, and spray gun movement speed is 150mm/s, angle of spray Degree sprays Cu powder to bush material for 65~85 °.
Preferably, the size of the Cu powder is 20 μm, and coating thickness is 15-50 μm.
Preferably, in step A2, the preparation WC coating specifically uses following methods: adjust flame-spraying oxygen pressure for 2.5Mpa, acetylene pressure 0.05Mpa, flame-spraying distance are 150mm, and spray gun movement speed is 200mm/s, and spray angle is 65~85 ° spray WC powder to bush material.
Preferably, the size of the WC powder is 30 μm, and coating thickness is 15-50 μm.
Preferably, in step A3, the spray distance is 100mm, and spray gun movement speed is 100mm/s, and spray angle is 65-85°。
Preferably, in step A3, the suspension includes each component of following mass percentage: MoS2Powder 20%- 40%；Epoxy resin 5%-8%；Organic siliconresin 3%-5%；Sb2O31%-5%；WS21%-5%；Surplus is mixed solution.
Preferably, the MoS2Size of powder particles is 10 μm；The mixed solution includes each component of following mass percent: Toluene 10-20%；Acetone 15-25%；Ethylene glycol ethyl ether 20-30%, butanone 25-35%.
Preferably, it in the step A1, cleans specific use: carrying out ultrasonic vibration in acetone soln and clean 20min；Institute State drying condition are as follows: dry 30min in 80 DEG C of baking ovens.
Preferably, it in the step A4, cleans specific use: carrying out ultrasonic vibration in acetone soln and clean 10min；Institute State drying condition are as follows: dry 30min in 80 DEG C of baking ovens.
In the present invention, the Cu coating is prepared using flame spraying method, Cu coating thermal expansion coefficient and bush material phase Closely, the adhesive property of coating and bush material can be improved, improve anchoring strength of coating.The WC coating uses flame spraying method Preparation, the WC are hard ceramic material, and hardness is high, and bush material abrasion resistance and load-bearing performance can be improved.The MoS2It applies Layer is prepared using suspension spray method, the MoS2For self-lubricating soft material, MoS2Coating can wrap up hard coat abrasive grain, drop The coefficient of friction of low coating makes bearing shell have self-lubricating property.
Compared with prior art, the present invention is with following the utility model has the advantages that by preparing soft or hard alternating on bush material Coating improves bearing shell wear resistant friction reducing performance, improves bearing shell bearing capacity, bearing shell embedded performance is improved, to improve axis Watt working life and anti-lock performance.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention, Objects and advantages will become more apparent upon:
Fig. 1 is the soft or hard alternately composite coating structure figure for bush material surface of the invention；
Wherein, 1-Cu coating；2-WC coating；3-MoS2Coating；
Fig. 2 is the PVvalue testing result of bush material.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection scope.
Embodiment 1
Present embodiments provide it is a kind of for bush material surface it is soft or hard alternately composite coating, as shown in Figure 1, include by Cu coating, WC coating and the MoS that bush material surface is set gradually outward2Coating.The Cu coating layer thickness is 15-50 μm, WC Coating layer thickness is 15-50 μm, MoS2Coating layer thickness is 15-50 μm.The composite coating overall thickness is no more than 100 μm.
The present embodiment additionally provides a kind of preparation method of soft or hard alternately composite coating for bush material surface, including Following steps:
So that roughness is reached RZ 25-100 μm 1. inner surface of bearing bush carries out blasting treatment, bush material after spraying is put into Ultrasonic vibration is carried out in acetone soln and cleans 10min, and bush material is placed in 80 DEG C of baking ovens after cleaning and dries 30min.
2. preparing Cu soft coating using flame-spraying.Bearing shell is first preheated to 150-200 DEG C.Adjust flame-spraying oxygen pressure Power is 0.8~1Mpa, and acetylene pressure 0.07Mpa, flame-spraying distance is 250mm, and spray gun movement speed is 150mm/s, spray Applying angle is 65-85 °.Cu size of powder particles is 20 μm, and Cu is soft metal, prepares one layer of Cu soft coating first on bearing shell surface.
3. preparing WC coating using flame-spraying.First by the bearing shell substrate preheating with Cu coating to 150-200 DEG C.It adjusts Flame-spraying oxygen pressure is 2.5Mpa, and acetylene pressure 0.05Mpa, flame-spraying distance is 150mm, and spray gun movement speed is 200mm/s, spray angle are 65-85 °.WC powder size is 30 μm, and WC is hard ceramic material, prepares one layer in Cu coating surface WC hard conating.
4. preparing MoS using suspension spray method2Coating.Extremely by the bearing shell substrate preheating with Cu coating and WC coating first 150-200℃.Spray distance is 100mm, and spray gun movement speed is 100mm/s, and spray angle is 65-85 °.MoS2Size of powder particles It is 10 μm, MoS2Powder mixture ratio is 20%-40%；Epoxy resin 5%-8%；Organic siliconresin 3%-5%；Sb2O31%-5%； WS21%-5%；Mixed solution is surplus.Mixed solution proportion is toluene 10-20%；Acetone 15-25%；Ethylene glycol ethyl ether 20- 30%, butanone 20-35%.2 hours are kept the temperature after spraying in an oven, temperature is 200 DEG C.MoS2For soft material, in Cu coating table Wheat flour is for one layer of MoS2Soft coating.
Ultrasonic vibration cleaning 20min is carried out 5. the bearing shell with three-layer coating is put into acetone soln, by axis after cleaning Watt material, which is placed in 80 DEG C of baking ovens, dries 30min, finally forms soft or hard alternately composite coating on bearing shell surface.
The coefficient of friction of the soft or hard alternately bush material of composite coating of spraying manufactured in the present embodiment is as shown in Fig. 2, detection Equipment is U.S. UTM-2 (CETR) multifunction friction wear testing machine, tests load 10N, speed 15mm/s, time 10min.Knot Fruit shows that coefficient of friction significantly reduces compared with the uncoated soft or hard alternately bush material of composite coating.
The bearing shell matrix maximum equivalent of the soft or hard alternately composite coating of spraying manufactured in the present embodiment is 61.638Mpa, And the bearing shell matrix maximum equivalent under the same terms without composite coating is 85.867Mpa, soft or hard alternately composite coating can have Effect reduces bearing shell matrix equivalent stress.Simulated conditions: ANSYS Workbench 15.0. load 5N, speed 10mm/s, display are dynamic Mechanics Simulation.The result shows that bearing capacity significantly improves compared with the uncoated soft or hard alternately bush material of composite coating.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention.More than it should be pointed out that Embodiment is merely to illustrate the present invention, and the protection scope being not intended to restrict the invention.For the common skill of the art For art personnel, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as this hair Bright protection scope.

Claims (9)

1. it is a kind of for bush material surface it is soft or hard alternately composite coating, which is characterized in that including from bush material surface to Cu coating, WC coating and the MoS set gradually outside2Coating；
The Cu coating layer thickness is 15-50 μm, WC coating layer thickness is 15-50 μm, MoS2Coating layer thickness is 15-50 μm；It is described compound Total coating thickness is no more than 100 μm；
The Cu coating is prepared using flame spraying method.
2. a kind of preparation method for the soft or hard alternately composite coating for being used for bush material surface as described in claim 1, special Sign is, comprising the following steps:
A1, it after carrying out blasting treatment to bush material, cleans, drying；
A2, it after the bush material after drying is preheated to 150-200 DEG C, is sequentially prepared using flame-spraying on bush material surface Cu coating, WC coating；
A3, suspension spray is used to prepare MoS on WC coating2Coating；
A4, the bush material with three-layer coating is cleaned, is dried to get the composite coating.
3. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 2, feature exists In in step A2, the preparation Cu coating specifically uses following methods: adjusting flame-spraying oxygen pressure is 0.8~1Mpa, second Alkynes pressure is 0.07Mpa, and flame-spraying distance is 250mm, and spray gun movement speed is 150mm/s, and spray angle is 65~85 ° right Bush material sprays Cu powder.
4. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 3, feature exists In the size of the Cu powder is 20 μm, and coating thickness is 15-50 μm.
5. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 2, feature exists In in step A2, the preparation WC coating specifically uses following methods: adjusting flame-spraying oxygen pressure is 2.5Mpa, acetylene Pressure is 0.05Mpa, and flame-spraying distance is 150mm, and spray gun movement speed is 200mm/s, and spray angle is 65~85 ° to axis Watt material spraying WC powder.
6. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 5, feature exists In the size of the WC powder is 30 μm, with a thickness of 15-50 μm.
7. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 2, feature exists In in step A3, the spray distance is 100mm, and spray gun movement speed is 100mm/s, and spray angle is 65-85 °.
8. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 2, feature exists In in step A3, the suspension includes each component of following mass percentage: MoS2Powder 20%-40%；Epoxy resin 5%-8%；Organic siliconresin 3%-5%；Sb2O31%-5%；WS21%-5%；Surplus is mixed solution.
9. being used for the preparation method of the soft or hard alternately composite coating on bush material surface as claimed in claim 8, feature exists In the MoS2Size of powder particles is 10 μm；The mixed solution includes each component of following mass percent: toluene 10-20%； Acetone 15-25%；Ethylene glycol ethyl ether 20-30%, butanone 25-35%.
CN201610712259.8A 2016-08-23 2016-08-23 Soft or hard alternately composite coating and preparation method thereof for bush material surface Expired - Fee Related CN106222656B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610712259.8A CN106222656B (en) 2016-08-23 2016-08-23 Soft or hard alternately composite coating and preparation method thereof for bush material surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610712259.8A CN106222656B (en) 2016-08-23 2016-08-23 Soft or hard alternately composite coating and preparation method thereof for bush material surface

Publications (2)

Publication Number Publication Date
CN106222656A CN106222656A (en) 2016-12-14
CN106222656B true CN106222656B (en) 2019-11-19

Family

ID=57554069

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610712259.8A Expired - Fee Related CN106222656B (en) 2016-08-23 2016-08-23 Soft or hard alternately composite coating and preparation method thereof for bush material surface

Country Status (1)

Country Link
CN (1) CN106222656B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107513684B (en) * 2017-07-17 2019-12-10 中国兵器科学研究院宁波分院 Self-lubricating composite coating, coating preparation method and product with coating
CN108950550B (en) * 2018-07-24 2020-07-14 首都航天机械有限公司 MoS for aerospace firer separation2GIC multilayer composite solid lubricating coating and preparation method thereof
CN114959617B (en) * 2022-06-28 2024-01-26 西安工程大学 Ag/WS 2 DLC coating and method for producing same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612109C1 (en) * 1996-03-27 1997-11-20 Bundesrep Deutschland Bearing component used for sliding and rolling
CN101870297A (en) * 2009-04-21 2010-10-27 瞿斌 Wear-resistant pad of carriage connecting device
CN103849311A (en) * 2012-11-29 2014-06-11 中国科学院兰州化学物理研究所 Method for preparing solid lubricant coating on copper base bearing bush

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828482B2 (en) * 2006-08-28 2010-11-09 Roller Bearing Company Of America, Inc. Tungsten carbide enhanced bearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612109C1 (en) * 1996-03-27 1997-11-20 Bundesrep Deutschland Bearing component used for sliding and rolling
CN101870297A (en) * 2009-04-21 2010-10-27 瞿斌 Wear-resistant pad of carriage connecting device
CN103849311A (en) * 2012-11-29 2014-06-11 中国科学院兰州化学物理研究所 Method for preparing solid lubricant coating on copper base bearing bush

Also Published As

Publication number Publication date
CN106222656A (en) 2016-12-14

Similar Documents

Publication Publication Date Title
CN106222656B (en) Soft or hard alternately composite coating and preparation method thereof for bush material surface
CN104404434B (en) A kind of ceramic coating of metal material surface and preparation method thereof
Mi et al. Sliding wear behavior of HVOF sprayed WC-(nano-WC-Co) coating at elevated temperatures
Cao et al. The friction and wear behavior of Cu/Cu-MoS2 self-lubricating coating prepared by electrospark deposition
Huang et al. Effects of solid lubricant content on the microstructure and properties of NiCr/Cr3C2–BaF2· CaF2 composite coatings
CN104962776B (en) High-alumina bronze coating for repairing volume damage and preparation method of high-alumina bronze coating
CN106835112A (en) A kind of preparation method of the stainless steel composite coating of Mg alloy surface cold spraying 420
Chen et al. Microstructure and tribological property of HVOF-sprayed adaptive NiMoAl–Cr3C2–Ag composite coating from 20° C to 800° C
CN103898499B (en) One is prepared SiC/Al by precursor pyrolysis and hot pressing2o3the method of coating
CN106119762A (en) A kind of boride cement coating material and preparation method
CN109504933A (en) A kind of NiAl-Cr2O3- Mo-Ag high temperature lubricating composite coating and preparation method
CN107541694A (en) A kind of preparation method of rotary packing ring surface lubrication wear-resisting coating
CN108486565A (en) A kind of low pressure cold spraying copper radical self-lubricating coating and preparation method thereof
CN104278227A (en) Preparation technology for all-metal-phase wide-temperature-range self-lubricating coating
CN106756719A (en) A kind of coupling coating with high-intensity high-tenacity and preparation method thereof
CN103216447B (en) The antifriction coating layer of screw compressor and method and purposes
CN102635068B (en) Lubricating structure between saddle and base body of bridge and lubricating method
CN202732711U (en) Antifriction bearing
Sutar et al. Thermal and dry sliding wear behavior of plasma sprayed red mud-fly ash coatings on mild steel
CN102635164B (en) Lubricating structure and method for high-rise building glass curtain wall
CN111676469A (en) SiC/Al prepared by laser cracking polycarbosilane precursor2O3Method for multiphase ceramic coating
CN110643928A (en) Iron-based alloy wear-resistant antifriction coating and preparation method thereof
CN114042911B (en) Composite powder, composite coating, preparation method and application thereof
CN109338266A (en) A kind of wear resistant self-lubricating coating and preparation method
CN108047930A (en) A kind of bearing shell polymer coating and its spraying process

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191119

Termination date: 20210823