CN100548539C - A kind of manufacture method of ultra-fine hard alloy composite powder - Google Patents
A kind of manufacture method of ultra-fine hard alloy composite powder Download PDFInfo
- Publication number
- CN100548539C CN100548539C CNB200710035837XA CN200710035837A CN100548539C CN 100548539 C CN100548539 C CN 100548539C CN B200710035837X A CNB200710035837X A CN B200710035837XA CN 200710035837 A CN200710035837 A CN 200710035837A CN 100548539 C CN100548539 C CN 100548539C
- Authority
- CN
- China
- Prior art keywords
- powder
- carbide
- cobalt
- ultra
- plating
- 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
Links
Abstract
The invention discloses a kind of preparation method of ultra-fine hard alloy composite powder, the ultra-fine hard in the composite powder of the present invention is coated by cobalt phase superfines uniform particles mutually fully.The present invention with ultrafine tungsten carbide with after other carbide powder hard activates dispersion mutually, put into the solution of water-soluble metal cobalt salt, with superfine tungsten carbide and other carbide powder hard-phase particles is core, utilize the electroless cobalt plating process to form even cobalt plating layer, after filtration, make ultra-fine hard alloy composite powder after the washing, dry, low temperature crystallized reduction at tungsten carbide powder and other carbide powder hard phase surface.Technology of the present invention is simple, cost is low, can substitute existing carbide alloy wet-milling compound and preparation method thereof, adopts powder of the present invention can prepare high-quality ultra-fine cemented carbide material.
Description
Technical field
The present invention relates to a kind of manufacture method of ultra-fine hard alloy composite powder.
Background technology
China is CEMENTED CARBIDE PRODUCTION big country, but is not CEMENTED CARBIDE PRODUCTION power.Compare with the developed country level, the hart metal product of China is second-rate, and most of properties of product are on the low side, still belong to low technical content and low value-added primary product, and service life is shorter.Ultra-fine cemented carbide has the excellent comprehensive performance, is the important directions of current carbide alloy both at home and abroad research and development.The preparation ultra-fine cemented carbide must adopt high-quality ultra-fine hard alloy composite powder, but China's research and application in this regard is comparatively backward.Domestic most of enterprises are when the preparation carbide alloy mixture at present, especially ultra-fine cemented carbide compound, that adopts is still tungsten carbide and cobalt powder wet milling process, be about to the thicker cobalt powder of granularity that the solid phase reduction method produces and put into ball mill, make after passing through long-time wet-milling with tungsten carbide powder and other carbide powder.When adopting thicker cobalt powder of granularity and ball-milling technology method, obviously, the thicker cobalt powder (〉=1 μ m) of granularity is difficult to mix with superfine tungsten carbide and other carbide powder (≤1 μ m), this easily produces the cobalt pond after causing the ultra-fine cemented carbide sintering, and increased hard phase crystal grain and assemble the trend of growing up, thereby cause that the ultra-fine cemented carbide end product quality is relatively poor, service life is lower.
Summary of the invention
The technical problem that the present invention also will solve provides the manufacture method that a kind of production technology is simple, can make the ultra-fine hard alloy composite powder that the ultra-fine hard in the composite hard alloy powder coats by cobalt phase superfines uniform particles mutually fully.
In order to solve the problems of the technologies described above, the preparation method of ultra-fine hard alloy composite powder provided by the invention, this preparation method comprises following processing step:
Steps A. superfine tungsten carbide and various carbide powder preliminary treatment: with 25mL alcohol and 82g～93.5g superfine tungsten carbide and the various carbide powders of 0.5g～5.5g as titanium carbide TiC, ramet TaC, niobium carbide NbC, carbide vanadium vc and/or chromium carbide Cr
3C
2Evenly mix, treat that its activation disperses after, as the matrix of plating;
The preparation of step B. cobalt coating: pretreated tungsten carbide and various carbide mixed powder are poured in the 1000mL electroless cobalt plating liquid, be heated to 80-95 ℃ after stirring, constant temperature also constantly stirs, and up to no longer producing bubble, reacting and finish, forms the cobalt plating layer;
Each constituent content is Cobalt salts 30-50g/L, reducing agent 4-101g/L, complexing agent and buffer 30-130g/L in the electroless cobalt plating liquid;
Wherein, described Cobalt salts is cobaltous sulfate or cobalt chloride;
Described reducing agent is a kind of in sodium phosphite, dimethylamine borane, tetrahydro boron sodium, the hydrazine hydrate or with several;
Described complexing agent and buffer are a kind of in natrium citricum, sodium potassium tartrate tetrahydrate, boric acid, the sal-ammoniac or with several;
Step C. post processing: with plating powder and solution separating and filtering, with water purification washing, at 70-90 ℃ vacuum oven 1-1.5 hour, and then the plating powder of drying being put into hydrogen reducing furnace, is 2-4m at 400-450 ℃, hydrogen flowing quantity
3Under/min., 50-90 minute the condition, make the low temperature crystallized reduction of cobalt plating layer make ultra-fine hard alloy composite powder.
Compared with prior art, the present invention has following outstanding advantage:
1, ultra-fine hard alloy composite powder of the present invention, not only cobalt and hard mix more evenly mutually, and hard coats by cobalt phase ultra-fine grain mutually fully, reduced the cobalt pond that easily produces behind the ultra-fine cemented carbide sintering and hard mutually crystal grain assemble the trend of growing up.
2, ultra-fine cemented carbide wearability and the hardness of preparing with ultra-fine hard alloy composite powder of the present invention, bending strength and fracture toughness all improve a lot.
3, the present invention does not adopt the ball milling operation, can replace the wet-milling preparation technology method of existing tungsten carbide and cobalt compound, and its preparation technology is simple, and is with low cost, is suitable for conventional production.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1:
WC-6% (weight) Co-0.5% (weight) TaC (NbC) composite powder.
Preliminary treatment Fei Shi particle mean size is tungsten carbide wc and ramet TaC (niobium carbide NbC) the mixed-powder 94g of 0.8 μ m, wherein tungsten carbide wc powder 93.5g, ramet TaC (niobium carbide NbC) powder 0.5g.Mixed-powder is evenly mixed with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.The mixed-powder of pretreated tungsten carbide wc and ramet TaC (niobium carbide NbC) is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: Cobalt monosulfate heptahydrate (CoSO
47H
2O): 29g/L; Sodium phosphite (NaH
2PO
2H
2O): 30g/L; Natrium citricum (Na
3C
6H
5O
72H
2O): 60g/L, boric acid (H
3BO
3): 25g/L.Adjust plating bath pH to 9.2, remain on 90 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then the plating powder of drying put into hydrogen reducing furnace, is 2m at 450 ℃, hydrogen flowing quantity
3Under/hr., 50 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 93.5% (weight), TaC (NbC) content are that 0.5% (weight), Co content are the composite powder of 6% (weight), and composite powder Fei Shi particle mean size is 0.9 μ m.
Embodiment 2:
WC-5% (weight) TiC-0.5% (weight) VC (Cr
3C
2)-10% (weight) Co composite powder.
Preliminary treatment Fei Shi particle mean size is the tungsten carbide wc of 0.6 μ m and titanium carbide TiC and carbide vanadium vc (the chromium carbide Cr of 1 μ m
3C
2) mixed-powder 90g, wherein tungsten carbide wc powder 84.5g, TiC powder 5g, carbide vanadium vc (chromium carbide Cr
3C
2) powder 0.5g.Titanium carbide TiC and carbide vanadium vc (chromium carbide Cr with tungsten carbide wc and 1 μ m
3C
2) mixed-powder evenly mixes with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: Cobalt monosulfate heptahydrate (CoSO
47H
2O): 48g/L; Sodium phosphite (NaH
2PO
2H
2O): 50g/L; Natrium citricum (Na
3C
6H
5O
72H
2O): 80g/L, boric acid (H
3BO
3): 45g/L.Adjust plating bath pH to 9.2, remain on 90 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 80 ℃ vacuum oven 1 hour, and then the plating powder of drying put into hydrogen reducing furnace, is 3m at 450 ℃, hydrogen flowing quantity
3Under/hr., 70 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 84.5% (weight), TiC content are 5% (weight), VC (Cr
3C
2) content is that 0.5% (weight), Co content are the composite powder of 10% (weight), composite powder Fei Shi particle mean size is 0.8 μ m.
Embodiment 3:
WC-1% (weight) TaC (NbC)-8% (weight) Co composite powder.
Preliminary treatment Fei Shi particle mean size is the tungsten carbide wc of 0.4 μ m and ramet TaC (niobium carbide NbC) the mixed-powder 92g of 0.6 μ m, wherein tungsten carbide wc powder 91g, ramet TaC (niobium carbide NbC) powder 1g.Tungsten carbide wc and ramet TaC (niobium carbide NbC) mixed-powder are evenly mixed with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.Pretreated tungsten carbide wc and ramet TaC (niobium carbide NbC) mixed-powder is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: cobalt chloride hexahydrate (CoCl
26H
2O): 42g/L; Sodium phosphite (NaH
2PO
2H
2O): 18g/L; Natrium citricum (Na
3C
6H
5O
72H
2O): 50g/L, sal-ammoniac (NH
4Cl): 70g/L.Adjust plating bath pH to 9.5, remain on 95 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then the plating powder of drying put into hydrogen reducing furnace, is 4m at 400 ℃, hydrogen flowing quantity
3Under/hr., 90 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 91% (weight), TaC (NbC) content are that 1% (weight), Co content are the composite powder of 8% (weight), and composite powder Fei Shi particle mean size is 0.5 μ m.
Embodiment 4:
WC-6% (weight) TiC-4% (weight) TaC (NbC)-8% (weight) Co composite powder.
Preliminary treatment Fei Shi particle mean size is the tungsten carbide wc of 0.6 μ m and titanium carbide TiC and ramet TaC (niobium carbide NbC) the mixed-powder 92g of 0.8 μ m, wherein tungsten carbide wc powder 82g, titanium carbide TiC powder 6g, ramet TaC (niobium carbide NbC) powder 4g.Mixed-powder is evenly mixed with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: cobalt chloride hexahydrate (CoCl
26H
2O): 42g/L; Sodium phosphite (NaH
2PO
2H
2O): 28g/L; Natrium citricum (Na
3C
6H
5O
72H
2O): 50g/L, sal-ammoniac (NH
4Cl): 70g/L.Adjust plating bath pH to 9.5, remain on 95 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 95 ℃ vacuum oven 1.5 hours, and then the plating powder of drying put into hydrogen reducing furnace, is 4m at 400 ℃, hydrogen flowing quantity
3Under/hr., 90 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 82% (weight), TiC content are that 6% (weight), TaC (NbC) content are that 4% (weight), Co content are the composite powder of 8% (weight), and composite powder Fei Shi particle mean size is 0.75 μ m.
Embodiment 5:
WC-6% (weight) Co-0.5% (weight) TaC (NbC) composite powder.
Preliminary treatment Fei Shi particle mean size is tungsten carbide wc and ramet TaC (niobium carbide NbC) the mixed-powder 94g of 0.8 μ m, wherein tungsten carbide wc powder 93.5g, ramet TaC (niobium carbide NbC) powder 0.5g.Mixed-powder is evenly mixed with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder (mixed-powder of tungsten carbide wc and ramet TaC (niobium carbide NbC)) is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: Cobalt monosulfate heptahydrate (CoSO
47H
2O): 29g/L; Hydrazine hydrate (H
4N
2H
2O): 101g/L; Sodium potassium tartrate tetrahydrate (KNaC
4H
4O
64H
2O): 110g/L).Adjust plating bath pH to 9.5, remain on 80 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then the plating powder of drying put into hydrogen reducing furnace, is 2m at 450 ℃, hydrogen flowing quantity
3Under/hr., 50 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 93.5% (weight), TaC (NbC) content are that 0.5% (weight), Co content are the composite powder of 6% (weight), and composite powder Fei Shi particle mean size is 0.9 μ m.
Embodiment 6:
WC-6% (weight) TiC-4% (weight) TaC (NbC)-8% (weight) Co composite powder.
Preliminary treatment Fei Shi particle mean size is the tungsten carbide wc of 0.6 μ m and titanium carbide TiC and ramet TaC (niobium carbide NbC) the mixed-powder 92g of 0.8 μ m, wherein tungsten carbide wc powder 82g, titanium carbide TiC powder 6g, ramet TaC (niobium carbide NbC) powder 4g.Mixed-powder is evenly mixed with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: cobalt chloride hexahydrate (CoCl
26H
2O): 42g/L; Tetrahydro boron sodium (NaBH
4): 23.3g/L; Sodium potassium tartrate tetrahydrate (KNaC
4H
4O
64H
2O): 90g/L).Adjust plating bath pH to 9.5, remain on 85 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 95 ℃ vacuum oven 1.5 hours, and then the plating powder of drying put into hydrogen reducing furnace, is 4m at 400 ℃, hydrogen flowing quantity
3Under/hr., 90 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 82% (weight), TiC content are that 6% (weight), TaC (NbC) content are that 4% (weight), Co content are the composite powder of 8% (weight), and composite powder Fei Shi particle mean size is 0.75 μ m.
Embodiment 7:
WC-6% (weight) Co-0.5% (weight) TaC (NbC) composite powder.
Preliminary treatment Fei Shi particle mean size is tungsten carbide wc and ramet TaC (niobium carbide NbC) the mixed-powder 94g of 0.8 μ m, wherein tungsten carbide wc powder 93.5g, ramet TaC (niobium carbide NbC) powder 0.5g.Mixed-powder is evenly mixed with alcohol 25mL, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder (mixed-powder of tungsten carbide wc and ramet TaC (niobium carbide NbC)) is dispersed in the 1000mL plating bath, carries out cobalt then and coats.Each constituent concentration is in the plating bath: Cobalt monosulfate heptahydrate (CoSO
47H
2O): 29g/L; Dimethylamine borane (C
2H
10BN): 4g/L; Sodium potassium tartrate tetrahydrate (KNaC
4H
4O
64H
2O): 80g/L), sal-ammoniac (NH
4Cl): 50g/L.Adjust plating bath pH to 9.5, remain on 80 ℃ with water bath heating control temperature, mechanical agitation speed is 200 rev/mins.Coating after experiment finishes, with plating powder and solution separating and filtering, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then the plating powder of drying put into hydrogen reducing furnace, is 2m at 450 ℃, hydrogen flowing quantity
3Under/hr., 50 minutes the condition, make the reduction of cobalt plating layer crystal make ultra-fine hard alloy composite powder.Obtaining WC content at last is that 93.5% (weight), TaC (NbC) content are that 0.5% (weight), Co content are the composite powder of 6% (weight), and composite powder Fei Shi particle mean size is 0.9 μ m.
Claims (1)
1, a kind of manufacture method of ultra-fine hard alloy composite powder is characterized in that comprising following processing step:
Steps A. superfine tungsten carbide and various carbide powder preliminary treatment: with 25mL alcohol and 82g～93.5g superfine tungsten carbide and the various carbide powders of 0.5g～5.5g: titanium carbide TiC, ramet TaC, niobium carbide NbC, carbide vanadium vc and/or chromium carbide Cr
3C
2Evenly mix, treat that its activation disperses after, as the matrix of plating;
The preparation of step B. cobalt coating: pretreated tungsten carbide and various carbide mixed powder are poured in the 1000mL electroless cobalt plating liquid, be heated to 80-95 ℃ after stirring, constant temperature also constantly stirs, and up to no longer producing bubble, reacting and finish, forms the cobalt plating layer; Each constituent content is Cobalt salts 30-50g/L, reducing agent 4-101g/L, complexing agent and buffer 30-130g/L in the electroless cobalt plating liquid, described Cobalt salts is cobaltous sulfate or cobalt chloride, described reducing agent is one or more in sodium phosphite, dimethylamine borane, tetrahydro boron sodium, the hydrazine hydrate, and described complexing agent and buffer are one or more in natrium citricum, sodium potassium tartrate tetrahydrate, boric acid, the sal-ammoniac;
Step C. post processing: with plating powder and solution separating and filtering, with water purification washing, at 70-90 ℃ vacuum oven 1-1.5 hour, and then the plating powder of drying being put into hydrogen reducing furnace, is 2-4m at 400-450 ℃, hydrogen flowing quantity
3Under/min., 50-90 minute the condition, make the low temperature crystallized reduction of cobalt plating layer make ultra-fine hard alloy composite powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710035837XA CN100548539C (en) | 2007-09-29 | 2007-09-29 | A kind of manufacture method of ultra-fine hard alloy composite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710035837XA CN100548539C (en) | 2007-09-29 | 2007-09-29 | A kind of manufacture method of ultra-fine hard alloy composite powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101161841A CN101161841A (en) | 2008-04-16 |
| CN100548539C true CN100548539C (en) | 2009-10-14 |
Family
ID=39296826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710035837XA Expired - Fee Related CN100548539C (en) | 2007-09-29 | 2007-09-29 | A kind of manufacture method of ultra-fine hard alloy composite powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100548539C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732768A (en) * | 2012-07-12 | 2012-10-17 | 中南大学 | High-ductility, corrosion-resistant and ultra/extra-thick crystalline cemented carbide and preparation method thereof |
| CN103920887B (en) * | 2014-05-09 | 2016-02-24 | 湖南顶立科技有限公司 | A kind of method preparing WC-Co powder used for hot spraying |
| CN104016593B (en) * | 2014-06-13 | 2016-04-27 | 中北大学 | At the chemical plating method of glass microballon or fiberglass surfacing clad metal cobalt |
| CN104232967B (en) * | 2014-10-10 | 2017-01-18 | 台州学院 | Method for preparing low binder phase wolfram carbide hard alloy |
| CN106956007B (en) * | 2017-03-23 | 2019-04-30 | 洛阳理工学院 | A kind of graded composite cutter material and preparation method |
| EP3527306A1 (en) * | 2018-02-14 | 2019-08-21 | H.C. Starck Tungsten GmbH | Powder comprising coated hard particles |
| CN109518058A (en) * | 2018-12-06 | 2019-03-26 | 宇龙精机科技（浙江）有限公司 | A kind of deep-hole drill bit hard alloy and preparation method thereof |
| CN112063871B (en) * | 2020-09-02 | 2021-04-02 | 四川大学 | Preparation method of coarse-particle hard alloy |
| CN116043088A (en) * | 2023-01-17 | 2023-05-02 | 株洲硬质合金集团有限公司 | Carbide composite powder precursor and preparation method and application thereof |
-
2007
- 2007-09-29 CN CNB200710035837XA patent/CN100548539C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 硬质合金使用手册. 陈献廷，6，冶金工业出版社. 1986 |
| 硬质合金使用手册. 陈献廷，6，冶金工业出版社. 1986 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101161841A (en) | 2008-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100548539C (en) | A kind of manufacture method of ultra-fine hard alloy composite powder | |
| CN101186990A (en) | Ultra-fine hard alloy coated powder and method for preparing same | |
| CN102294473B (en) | TiC/Ti(C,N)-Mo-Ni/Co composite powder and preparation method and application thereof | |
| CN109706438B (en) | Preparation method of surface-modified ZTA ceramic particle reinforced steel-based composite material | |
| CN101428349B (en) | Method for producing nickel-cobalt metal powder | |
| CN101429652B (en) | Method for plating nickel on iron powder surface | |
| CN101559494A (en) | Core-shell structure type tungsten carbide-cobalt hard alloy raw material powder and preparation method thereof | |
| CN106903304B (en) | A kind of Fe@Ni composite granule and preparation method thereof with core-shell structure | |
| CN101985716B (en) | Preparation method of multi-scale double-interface metal ceramic powder | |
| CN101805867B (en) | Si3N4-based metal ceramic and preparation method thereof | |
| CN109365802B (en) | Preparation method of core-shell structure metal ceramic composite powder | |
| CN110195167A (en) | A kind of nickel alloy skeleton reinforced metal-base composite material and preparation method thereof | |
| CN109852952A (en) | A kind of hydrazine hydrate chemical nickel-plating plating solution and preparation method thereof and nickel plating process | |
| CN102554218A (en) | Method for preparing tungsten-copper composite powder by means of electroless copper plating | |
| CN101288905B (en) | Preparation method of copper cladding tungsten composite powder | |
| CN102151834B (en) | Al2O3-cobalt-based adhesive phase-containing ultrafine hard alloy powder and preparation method and use thereof | |
| CN108823553A (en) | A kind of preparation method of diamond surface Electroless Ni-P Plating | |
| CN108950529A (en) | A kind of tungsten carbide-copper-nickle composite powder preparation method | |
| CN110899692B (en) | Preparation method of iron-based alloy powder | |
| Ru et al. | Preparation and characterization of Ni-Cu dual coated ZTA particles by ionic liquid-assisted electroless plating as reinforcement of metal-based composites | |
| CN101439404A (en) | Cobalt-clad copper composite powder and preparation thereof | |
| CN106835089A (en) | Ni W P Nano-meter SiO_2s2The preparation method of chemical composite plating | |
| KR100545107B1 (en) | Synthesis of nickel-diamond composite powders by electroless plating method | |
| CN101880810A (en) | Hard alloy containing nickel aluminide and boron copper base and preparation method thereof | |
| CN103757616A (en) | Chemical plating alkaline composite plating solution used for preparing magnetic abrasive and preparation method of chemical plating alkaline composite plating solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGXI RARE AND RARE EARTH TUNGSTEN INDUSTRY GROU Free format text: FORMER OWNER: CENTRAL-SOUTH CHINA UNIV. Effective date: 20091120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091120 Address after: No 118, West Beijing Road, Nanchang, Jiangxi: 330046 Patentee after: JIANGXI RARE EARTH AND RARE METALS TUNGSTEN Group Corp. Address before: Hunan province Changsha Lushan Road 1 zip code: 410083 Co-patentee before: Shenzhen Xinhongtai Powder Metallurgy Co.,Ltd. Patentee before: Central South University Effective date of registration: 20091120 Address after: Hunan province Changsha Lushan Road 1 zip code: 410083 Co-patentee after: Shenzhen Xinhongtai Powder Metallurgy Co.,Ltd. Patentee after: CENTRAL SOUTH University Address before: Hunan province Changsha Lushan Road 1 zip code: 410083 Patentee before: Central South University Effective date of registration: 20091120 Address after: Hunan province Changsha Lushan Road 1 zip code: 410083 Patentee after: CENTRAL SOUTH University Address before: Hunan province Changsha Lushan Road 1 zip code: 410083 Co-patentee before: Jiangxi Tianhe New Material Co.,Ltd. Patentee before: Central South University |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20170929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |