CN104525949A - High abrasion-resisting copper-based friction composite material and preparing method thereof - Google Patents
High abrasion-resisting copper-based friction composite material and preparing method thereof Download PDFInfo
- Publication number
- CN104525949A CN104525949A CN201410838743.6A CN201410838743A CN104525949A CN 104525949 A CN104525949 A CN 104525949A CN 201410838743 A CN201410838743 A CN 201410838743A CN 104525949 A CN104525949 A CN 104525949A
- Authority
- CN
- China
- Prior art keywords
- powder
- friction material
- copper base
- wear
- mos
- 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.)
- Granted
Links
Abstract
The invention relates to a high abrasion-resisting copper-based friction composite material suitable for manufacturing railway vehicle braking pads and a preparing method thereof and belongs to the technical field of friction materials. The raw materials comprise, by weight, 45%-60% of Cu, 15%-25% of Fe, 5%-10% of Cr, 2%-10% of ZTA composite ceramic, 0.5%-2% of MoS2 and 10%-20% of graphite powder. A powder metallurgy method is used for high-vacuum sintering to form the high abrasion-resisting copper-based friction composite material which has the advantages of being high in intensity and high in hardness, under the condition of high speed and high temperature, the friction coefficient is high, anti-abrasion capacity is high, stability is good, heat conductivity is good, service life is long, and the material is suitable for manufacturing the high speed train braking pads.
Description
Technical field
The invention belongs to friction materials technology field, specifically relate to and be a kind ofly applicable to wear-resistant copper base composite friction material manufacturing railway vehicle brake brake lining and preparation method thereof.
Background technology
Copper base composite friction material has that higher-strength, wearability are good, thermal conductivity advantages of higher, is the important materials manufacturing brake apparatus, in the transport facilitys such as bullet train, aircraft, automobile, obtains extensive use.Along with the fast development of electric railway, train braking performance is had higher requirement, particularly more and more higher to the performance requirement of friction material, not only require that there is high strength, high-termal conductivity, require the features such as sufficiently high coefficient of friction, high-temperature stability, excellent wearability simultaneously.
For improving the antiwear property of train copper base composite friction material in prior art, usually the single phase ceramic material such as carborundum, zirconia, aluminium oxide are added, because this several single phase ceramic material has the characteristics such as high fusing point, hardness and chemical stability, in friction material, obtain comparatively extensive use.But the performances such as the high rigidity of single phase ceramic material can not ensure that material has good wearability.For ensureing low wear rate in many actual friction environments, also require that ceramic material has higher fracture toughness.Single phase ceramic material due to fragility large, fracture toughness is low, and ceramic particle easily fractures and peels off, and increases wear extent, reduces the braking effect of brake block, can not meet actual requirement well, the instructions for use particularly in high-speed train braking situation.Therefore, single phase ceramic material is still limited or unstable to the anti-wear performance improving copper base composite friction material, also needs to improve further.Above problem significantly limit the further fast development of copper base composite friction material and applies.
Summary of the invention
The object of the invention is to for above-mentioned existing problems and deficiency, provide that a kind of anti-wear performance containing Zirconia reinforced alumina composite ceramics is superior, good stability, thermal conductivity are good, the wear-resistant copper base composite friction material of long service life and preparation method thereof.
Technical scheme of the present invention is achieved in that
Wear-resistant copper base composite friction material of the present invention, is characterized in being mixed by the composition of following percentage by weight: Cu powder: 45 ~ 60%, Fe powder: 15 ~ 25%, Cr powder: 5 ~ 10%, ZTA composite ceramic: 2 ~ 10%, MoS
2powder: 0.5 ~ 2%, graphite powder: 10 ~ 20%, wherein the purity of Cu powder, Fe powder, Cr powder is greater than 99.0%, and granularity is less than 75 μm; The purity of ZTA composite ceramic is greater than 99.0%, and granularity is 75 ~ 150 μm; MoS
2the purity of powder and graphite powder is greater than 99.5%, and granularity is less than 75 μm.
Further, the better percentage by weight of above-mentioned each constituent is: Cu powder: 48 ~ 53%, Fe powder: 18 ~ 22%, Cr powder: 6 ~ 8%, ZTA composite ceramic: 4 ~ 8%, MoS
2powder: 0.8 ~ 1.8%, graphite powder: 12 ~ 18%.
Further, the optimum weight percentage of above-mentioned each constituent is: Cu powder: 50%, Fe powder: 20%, Cr powder: 7%, ZTA composite ceramic: 7%, MoS
2powder: 1%, graphite powder: 15%.
The preparation method of wear-resistant copper base composite friction material of the present invention adopts the mode of powder metallurgy to prepare described wear-resistant copper base composite friction material, is characterized in comprising the following steps:
1) weighing: components by weight percentage weighs Cu powder, Fe powder, Cr powder, ZTA composite ceramic, MoS
2powder and graphite powder;
2) batch mixing: the material prepared is mixed to evenly through homogenizer;
3) suppress: the raw material mixed is put into mould and carry out being pressed into pressed compact, pressure is 650 ~ 850MPa;
4) vacuum pressed sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinter, vacuum is 0.1 ~ 10Pa, sintering temperature is 750 ~ 900 DEG C, applying pressure is 1 ~ 3MPa, temperature retention time 2 ~ 4 hours, obtains wear-resistant copper base composite friction material.
The present invention compared with prior art, has the following advantages:
1, add in copper base composite friction material with tradition compared with one-component ceramic, the present invention adds the ZTA composite ceramics that toughness is better, fracture toughness is higher in copper base composite friction material, is conducive to improving anti-wear performance further, thus improves braking efficiency;
2, preparation technology of the present invention is simple, operation is easier, is conducive to applying;
3, the copper base composite friction material adopting the present invention to obtain at high speeds coefficient of friction high, wear and tear little, stability is high, thermal conductivity good, long service life, be suitable for manufacturing railway vehicle brake brake lining.
Detailed description of the invention
Wear-resistant copper base composite friction material of the present invention, is mixed by the composition of following percentage by weight: Cu powder: 45 ~ 60%, Fe powder: 15 ~ 25%, Cr powder: 5 ~ 10%, ZTA composite ceramic: 2 ~ 10%, MoS
2powder: 0.5 ~ 2%, graphite powder: 10 ~ 20%, wherein the purity of Cu powder, Fe powder, Cr powder is greater than 99.0%, and granularity is less than 75 μm; The purity of ZTA composite ceramic is greater than 99.0%, and granularity is 75 ~ 150 μm; MoS
2the purity of powder and graphite powder is greater than 99.5%, and granularity is less than 75 μm.Further, the better percentage by weight of described each constituent is: Cu powder: 48 ~ 53%, Fe powder: 18 ~ 22%, Cr powder: 6 ~ 8%, ZTA composite ceramic: 4 ~ 8%, MoS
2powder: 0.8 ~ 1.8%, graphite powder: 12 ~ 18%.Further, the optimum weight percentage of described each constituent is: Cu powder: 50%, Fe powder: 20%, Cr powder: 7%, ZTA composite ceramic: 7%, MoS
2powder: 1%, graphite powder: 15%.
The preparation method of wear-resistant copper base composite friction material of the present invention, the method adopts the mode of powder metallurgy to prepare above-mentioned wear-resistant copper base composite friction material, and it comprises the following steps:
1) weighing: components by weight percentage weighs Cu powder, Fe powder, Cr powder, ZTA composite ceramic, MoS
2powder and graphite powder;
2) batch mixing: the material prepared is mixed to evenly through homogenizer;
3) suppress: the raw material mixed is put into mould and carry out being pressed into pressed compact, pressure is 650 ~ 850MPa;
4) vacuum pressed sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinter, vacuum is 0.1 ~ 10Pa, sintering temperature is 750 ~ 900 DEG C, applying pressure is 1 ~ 3MPa, temperature retention time 2 ~ 4 hours, obtains wear-resistant copper base composite friction material.
Embodiment 1:
Prepare a kind of wear-resistant copper base composite friction material, its each weight percentages of components is as follows: Cu powder: 45%, Fe powder: 25%, Cr powder: 5%, ZTA composite ceramic: 10%, MoS
2powder: 2%, graphite powder: 13%.Its preparation process is as follows: 1) weighing: components by weight percentage weighs Cu powder: 45%, Fe powder: 25%, Cr powder: 5%, ZTA composite ceramic: 10%, MoS
2powder: 2%, graphite powder: 13%; 2) batch mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, the MoS that prepare
2mix through homogenizer with powdered graphite; 3) suppress: the raw material mixed is obtained pressed compact at 650MPa pressure; 4) pressure sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinters, and vacuum is 0.1Pa, and sintering temperature is 900 DEG C, and applying pressure is 1MPa, and temperature retention time 2 hours, obtains powder metallurgy friction material.The density of the copper base composite friction material prepared according to above-mentioned technique is 5.453 × 10
3kg/m
3, coefficient of friction is 0.388, and wear extent is 0.282cm
3/ MJ.
Embodiment 2:
Prepare a kind of copper base composite friction material, its each weight percentages of components is as follows: Cu powder: 60%, Fe powder: 15%, Cr powder: 10%, ZTA composite ceramic: 2%, MoS
2powder: 0.5%, graphite powder: 12.5%.Its preparation process is as follows: 1) weighing: components by weight percentage weighs Cu powder: 60%, Fe powder: 15%, Cr powder: 10%, ZTA composite ceramic: 2%, MoS
2powder: 0.5%, graphite powder: 12.5%; 2) batch mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, the MoS that prepare
2mix through homogenizer with powdered graphite; 3) suppress: the raw material mixed is obtained pressed compact at 850MPa pressure; 4) pressure sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinters, and vacuum is 10Pa, and sintering temperature is 750 DEG C, and applying pressure is 3MPa, and temperature retention time 4 hours, obtains powder metallurgy friction material.The density of the copper base composite friction material prepared according to above-mentioned technique is 5.531 × 10
3kg/m
3, coefficient of friction is 0.381, and wear extent is 0.293cm
3/ MJ.
Embodiment 3:
Prepare a kind of wear-resistant copper base composite friction material, its each weight percentages of components is as follows: Cu powder: 48%, Fe powder: 22%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS
2powder: 1.8%, graphite powder: 14.2%.Its preparation process is as follows: 1) weighing: components by weight percentage weighs Cu powder: 48%, Fe powder: 22%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS
2powder: 1.8%, graphite powder: 14.2%; 2) batch mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, the MoS that prepare
2mix through homogenizer with powdered graphite; 3) suppress: the raw material mixed is obtained pressed compact at 650MPa pressure; 4) pressure sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinters, and vacuum is 0.1Pa, and sintering temperature is 900 DEG C, and applying pressure is 1MPa, and temperature retention time 2 hours, obtains powder metallurgy friction material.The density of the copper base composite friction material prepared according to above-mentioned technique is 5.469 × 10
3kg/m
3, coefficient of friction is 0.392, and wear extent is 0.285cm
3/ MJ.
Embodiment 4:
Prepare a kind of copper base composite friction material, its each weight percentages of components is as follows: Cu powder: 53%, Fe powder: 18%, Cr powder: 8%, ZTA composite ceramic: 4%, MoS
2powder: 0.8%, graphite powder: 16.2%.Its preparation process is as follows: 1) weighing: components by weight percentage weighs Cu powder: 53%, Fe powder: 18%, Cr powder: 8%, ZTA composite ceramic: 4%, MoS
2powder: 0.8%, graphite powder: 16.2%; 2) batch mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, the MoS that prepare
2mix through homogenizer with powdered graphite; 3) suppress: the raw material mixed is obtained pressed compact at 850MPa pressure; 4) pressure sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinters, and vacuum is 10Pa, and sintering temperature is 750 DEG C, and applying pressure is 3MPa, and temperature retention time 4 hours, obtains powder metallurgy friction material.The density of the copper base composite friction material prepared according to above-mentioned technique is 5.548 × 10
3kg/m
3, coefficient of friction is 0.401, and wear extent is 0.293cm
3/ MJ.
Embodiment 5:
Prepare a kind of copper base composite friction material, its each weight percentages of components is as follows: Cu powder: 50%, Fe powder: 20%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS
2powder: 1%, graphite powder: 15%.Its preparation process is as follows: 1) weighing: components by weight percentage weighs Cu powder: 50%, Fe powder: 20%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS
2powder: 1%, graphite powder: 15%; 2) batch mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, the MoS that prepare
2mix through homogenizer with powdered graphite; 3) suppress: the raw material mixed is obtained pressed compact at 750MPa pressure; 4) pressure sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinters, and vacuum is 1Pa, and sintering temperature is 850 DEG C, and applying pressure is 2MPa, and temperature retention time 3 hours, obtains powder metallurgy friction material.The density of the copper base composite friction material prepared according to above-mentioned technique is 5.521 × 10
3kg/m
3, coefficient of friction is 0.414, and wear extent is 0.273cm
3/ MJ.
The present invention is described by embodiment, but the present invention is not construed as limiting, with reference to description of the invention, other changes of the disclosed embodiments, as the professional person for this area easily expects, such change should belong within the scope of the claims in the present invention restriction.
Claims (4)
1. a wear-resistant copper base composite friction material, is characterized in that being mixed by the composition of following percentage by weight: Cu powder: 45 ~ 60%, Fe powder: 15 ~ 25%, Cr powder: 5 ~ 10%, ZTA composite ceramic: 2 ~ 10%, MoS
2powder: 0.5 ~ 2%, graphite powder: 10 ~ 20%, wherein the purity of Cu powder, Fe powder, Cr powder is greater than 99.0%, and granularity is less than 75 μm; The purity of ZTA composite ceramic is greater than 99.0%, and granularity is 75 ~ 150 μm; MoS
2the purity of powder and graphite powder is greater than 99.5%, and granularity is less than 75 μm.
2. wear-resistant copper base composite friction material according to claim 1, is characterized in that the percentage by weight of above-mentioned each constituent is: Cu powder: 48 ~ 53%, Fe powder: 18 ~ 22%, Cr powder: 6 ~ 8%, ZTA composite ceramic: 4 ~ 8%, MoS
2powder: 0.8 ~ 1.8%, graphite powder: 12 ~ 18%.
3. wear-resistant copper base composite friction material according to claim 2, is characterized in that the percentage by weight of above-mentioned each constituent is: Cu powder: 50%, Fe powder: 20%, Cr powder: 7%, ZTA composite ceramic: 7%, MoS
2powder: 1%, graphite powder: 15%.
4. a preparation method for wear-resistant copper base composite friction material, the mode of the method employing powder metallurgy prepares the wear-resistant copper base composite friction material as described in aforementioned arbitrary claim, it is characterized in that comprising the following steps:
1) weighing: components by weight percentage weighs Cu powder, Fe powder, Cr powder, ZTA composite ceramic, MoS
2powder and graphite powder;
2) batch mixing: the material prepared is mixed to evenly through homogenizer;
3) suppress: the raw material mixed is put into mould and carry out being pressed into pressed compact, pressure is 650 ~ 850MPa;
4) vacuum pressed sintering: pressed compact is fixed on supporting steel back, puts into vacuum sintering furnace and sinter, vacuum is 0.1 ~ 10Pa, sintering temperature is 750 ~ 900 DEG C, applying pressure is 1 ~ 3MPa, temperature retention time 2 ~ 4 hours, obtains wear-resistant copper base composite friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838743.6A CN104525949B (en) | 2014-12-30 | 2014-12-30 | A kind of copper-based composite friction material of high abrasion and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838743.6A CN104525949B (en) | 2014-12-30 | 2014-12-30 | A kind of copper-based composite friction material of high abrasion and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104525949A true CN104525949A (en) | 2015-04-22 |
| CN104525949B CN104525949B (en) | 2017-07-07 |
Family
ID=52841680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410838743.6A Active CN104525949B (en) | 2014-12-30 | 2014-12-30 | A kind of copper-based composite friction material of high abrasion and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104525949B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063459A (en) * | 2015-07-20 | 2015-11-18 | 广西民族大学 | Copper-based powder metallurgy friction material for high-speed train braking and preparation method thereof |
| CN105886829A (en) * | 2016-05-06 | 2016-08-24 | 西南交通大学 | Graphene reinforced copper-based composite material and preparation method thereof |
| CN106166610A (en) * | 2016-06-27 | 2016-11-30 | 杭州桑拉科技有限公司 | A kind of high ferro braking metal+ceramic base brake lining friction resistance material and preparation method thereof |
| CN107614720A (en) * | 2015-05-28 | 2018-01-19 | 曙制动器工业株式会社 | High-speed railway vehicle sintered friction material and its manufacture method |
| CN110005735A (en) * | 2019-02-18 | 2019-07-12 | 红心科技有限公司 | A kind of high-speed train braking friction block and preparation method thereof |
| CN110650812A (en) * | 2017-04-07 | 2020-01-03 | 日本制铁株式会社 | Sintered friction material |
| CN111804907A (en) * | 2020-07-17 | 2020-10-23 | 西安交通大学 | Modified ceramic particle reinforced iron-based composite material and preparation method thereof |
| CN113234954A (en) * | 2021-04-30 | 2021-08-10 | 中铁隆昌铁路器材有限公司 | Copper-based powder metallurgy friction material and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518519A (en) * | 1994-07-30 | 1996-05-21 | Sumitomo Electric Industries, Ltd. | Sintered contact component |
| JP2002532625A (en) * | 1998-12-16 | 2002-10-02 | ヴィクトリアン レール トラック | Abrasion-improved low-resistance material for current transfer and method of forming the same |
| CN101644304A (en) * | 2009-09-04 | 2010-02-10 | 大连交通大学 | Metal base firing brake block with double-layer structure and manufacturing method thereof |
| CN102367526A (en) * | 2011-10-20 | 2012-03-07 | 北京科技大学 | Method for preparing evenly dispersed metal matrix composite friction material through mechanical alloying |
| CN103203446A (en) * | 2013-03-23 | 2013-07-17 | 广州有色金属研究院 | Preparation method for local ceramic reinforced aluminum matrix composite wear-resistant part |
| CN103244586A (en) * | 2013-05-20 | 2013-08-14 | 蒋建纯 | Metal-based powder metallurgy brake pad for high-speed train and manufacturing method thereof |
| CN103785841A (en) * | 2014-01-22 | 2014-05-14 | 西安交通大学 | Manufacturing method for composite wear-resistant parts formed by slurry coating surface activation ZTA particles and reinforced iron matrixes |
-
2014
- 2014-12-30 CN CN201410838743.6A patent/CN104525949B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5518519A (en) * | 1994-07-30 | 1996-05-21 | Sumitomo Electric Industries, Ltd. | Sintered contact component |
| JP2002532625A (en) * | 1998-12-16 | 2002-10-02 | ヴィクトリアン レール トラック | Abrasion-improved low-resistance material for current transfer and method of forming the same |
| CN101644304A (en) * | 2009-09-04 | 2010-02-10 | 大连交通大学 | Metal base firing brake block with double-layer structure and manufacturing method thereof |
| CN102367526A (en) * | 2011-10-20 | 2012-03-07 | 北京科技大学 | Method for preparing evenly dispersed metal matrix composite friction material through mechanical alloying |
| CN103203446A (en) * | 2013-03-23 | 2013-07-17 | 广州有色金属研究院 | Preparation method for local ceramic reinforced aluminum matrix composite wear-resistant part |
| CN103244586A (en) * | 2013-05-20 | 2013-08-14 | 蒋建纯 | Metal-based powder metallurgy brake pad for high-speed train and manufacturing method thereof |
| CN103785841A (en) * | 2014-01-22 | 2014-05-14 | 西安交通大学 | Manufacturing method for composite wear-resistant parts formed by slurry coating surface activation ZTA particles and reinforced iron matrixes |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614720A (en) * | 2015-05-28 | 2018-01-19 | 曙制动器工业株式会社 | High-speed railway vehicle sintered friction material and its manufacture method |
| EP3305927A4 (en) * | 2015-05-28 | 2019-01-09 | Akebono Brake Industry Co., Ltd. | Sintered friction material for high speed railway vehicles and method for manufacturing same |
| CN105063459A (en) * | 2015-07-20 | 2015-11-18 | 广西民族大学 | Copper-based powder metallurgy friction material for high-speed train braking and preparation method thereof |
| CN105063459B (en) * | 2015-07-20 | 2017-05-17 | 广西民族大学 | Copper-based powder metallurgy friction material for high-speed train braking and preparation method thereof |
| CN105886829A (en) * | 2016-05-06 | 2016-08-24 | 西南交通大学 | Graphene reinforced copper-based composite material and preparation method thereof |
| CN106166610A (en) * | 2016-06-27 | 2016-11-30 | 杭州桑拉科技有限公司 | A kind of high ferro braking metal+ceramic base brake lining friction resistance material and preparation method thereof |
| CN110650812A (en) * | 2017-04-07 | 2020-01-03 | 日本制铁株式会社 | Sintered friction material |
| CN110650812B (en) * | 2017-04-07 | 2022-04-05 | 日本制铁株式会社 | Sintered friction material |
| CN110005735A (en) * | 2019-02-18 | 2019-07-12 | 红心科技有限公司 | A kind of high-speed train braking friction block and preparation method thereof |
| CN111804907A (en) * | 2020-07-17 | 2020-10-23 | 西安交通大学 | Modified ceramic particle reinforced iron-based composite material and preparation method thereof |
| CN113234954A (en) * | 2021-04-30 | 2021-08-10 | 中铁隆昌铁路器材有限公司 | Copper-based powder metallurgy friction material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104525949B (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104525949A (en) | High abrasion-resisting copper-based friction composite material and preparing method thereof | |
| CN108359825B (en) | A kind of preparation method of ceramics-graphene enhancing Cu-base composites | |
| CN103668012B (en) | A kind of enhancement type Cu-base composites and its preparation method and application | |
| CN106399743A (en) | Super-simple component powder metallurgy friction material for high-speed train brake pad | |
| CN102730690B (en) | Al4SiC4 material synthetic method | |
| CN110923498B (en) | Copper-based powder metallurgy friction material containing metal carbide and metal oxide composite ceramic friction component and preparation method thereof | |
| CN104480336B (en) | A kind of high-temperature-resistant high WC-Co-Ti3siC2the preparation method of Hardmetal materials | |
| CN102965590B (en) | A kind of brazing and preparation thereof | |
| CN105986161A (en) | Cermet material and preparation method | |
| CN107267800A (en) | A kind of preparation method of the equally distributed copper base friction material of Fe phases | |
| CN107641725B (en) | A kind of ferrosilite based ceramic metal and preparation method thereof | |
| CN110900472A (en) | Oxide-based metal ceramic bond superhard grinding wheel and preparation method thereof | |
| CN105803286A (en) | Ceramic compound tool material and preparation method | |
| CN101551012A (en) | A carbonaceous silicon carbide sealed ring and preparation method thereof | |
| CN109777992A (en) | A kind of copper-based composite friction material of high abrasion and preparation method thereof | |
| CN108907177A (en) | Copper based powder metallurgy friction material for high-speed train braking | |
| CN106838079A (en) | A kind of extremely frigid zones bullet train brake pad metallurgical friction material | |
| CN102619913A (en) | Method for preparing low-metallic brake pads by utilizing sodium titanate whisker | |
| CN108191452B (en) | Oil-containing shaft sleeve and preparation method thereof, oil-containing bearing and application | |
| CN108315629B (en) | Preparation method of Al/SiC metal ceramic composite material | |
| CN102732773A (en) | Method for preparing iron-based friction material by vanadium titano-magnetite in-situ reaction sintering | |
| CN109402443A (en) | A kind of steel-based composite wear-resistant part and preparation method thereof | |
| CN102432308A (en) | ZrN-Sialon complex phase fire-resistant raw material powder and preparation method thereof | |
| CN109136606B (en) | Enhanced self-lubricating copper-based composite material and preparation method and application thereof | |
| CN109136605B (en) | Self-propagating synthesis of copper-based composite powder and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170606 Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Applicant after: Guangdong Institute Of Materials And Processing Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Applicant before: GUANGDONG GENERAL Research Institute FOR INDUSTRIAL TECHNOLOGY (GUANGZHOU RESEARCH INSTITUTE OF NON FERROUS METALS) |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of materials and processing, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangdong Institute Of Materials And Processing |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221109 Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee before: Institute of materials and processing, Guangdong Academy of Sciences |