CN101161841A - Ultra-fine hard alloy composite powder and method for manufacturing same - Google Patents
Ultra-fine hard alloy composite powder and method for manufacturing same Download PDFInfo
- Publication number
- CN101161841A CN101161841A CNA200710035837XA CN200710035837A CN101161841A CN 101161841 A CN101161841 A CN 101161841A CN A200710035837X A CNA200710035837X A CN A200710035837XA CN 200710035837 A CN200710035837 A CN 200710035837A CN 101161841 A CN101161841 A CN 101161841A
- Authority
- CN
- China
- Prior art keywords
- carbide
- powder
- cobalt
- ultra
- fine
- 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 discloses a super-fine cemented carbide composite powder and the method for preparing the same. The super-fine hard phase of the composite powder of the invention is completely packaged by cobalt phase super-fine powder particles evenly. The super-fine tungsten carbide and other carbonizations hard phase are activated and dispersed, put into the solution of water-soluble metal cobalt salt with the super-fine tungsten carbonize power and other carbonizations powder hard phase particles as core. Even cobalt coating layer is formed on the surface of the tungsten carbonize power and the other carbonizations powder hard phase by chemical cobalt coating technics method, and the super-fine cemented carbide composite power is made by filtering, washing, drying, crystallizing and restoring at low temperature. The invention is of simple technics and low cost and can replace the prior cemented carbide wet mixture material and the preparation method thereof. The super-fine cemented carbide material with high quality can be prepared by adopting the power of the invention.
Description
Technical field
The present invention relates to a kind of Hardmetal materials, more particularly, the present invention relates to a kind of ultra-fine hard alloy composite powder, the invention still further relates to the manufacture method of this 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 product performance are on the low side, still belong to low technical content and low value-added primary products, and work-ing life is shorter.Ultra-fine cemented carbide has the excellent comprehensive performance, is the important directions of current Wimet 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 wolfram varbide 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 final product quality is relatively poor, work-ing life is lower.
Summary of the invention
At the above-mentioned shortcoming of prior art, technical problem to be solved by this invention provides the ultra-fine hard alloy composite powder that a kind of production technique is simple, the quality quality is high.
Another technical problem that the present invention also will solve provides the manufacture method that a kind of production technique 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 ultrafine powder uniform particles mutually fully.
In order to solve the problems of the technologies described above, ultra-fine hard alloy composite powder provided by the invention, the ultra-fine hard phase tungsten carbide wc in this composite hard alloy powder and other carbide are as titanium carbide TiC, tantalum carbide TaC, niobium carbide NbC, carbide vanadium vc and/or chromium carbide Cr
3C
2, coat by cobalt phase ultrafine powder uniform particles fully and form the Fei Shi mean particle size of described ultra-fine hard alloy composite powder≤1 μ m.
Co in the described ultra-fine hard alloy composite powder coats the phase powder by electroless plating and low temperature crystallized reduction preparation.
Correspondingly, another technical solution of the present invention is a kind of preparation method of ultra-fine hard alloy composite powder, and this preparation method comprises following processing step:
Steps A. superfine tungsten carbide and various carbide powder pre-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, tantalum carbide TaC, niobium carbide NbC, carbide vanadium vc and/or chromium carbide Cr
3C
2Uniform mixing, treat that its activation disperses after, as the matrix of plating;
The preparation of step B. cobalt coating: pretreated wolfram varbide and various carbide powder mix are poured in the 1000mL electroless cobalt plating liquid, and the post-heating that stirs is to 80-95 ℃, and constant temperature also constantly stirs, and up to no longer producing bubble, reacting and finish, forms the cobalt plating layer;
Each component concentration is Cobalt salts 30-50g/L, reductive agent 4-101g/L, complexing agent and buffer reagent 30-130g/L in the electroless cobalt plating liquid;
Wherein, described Cobalt salts is rose vitriol or cobalt chloride;
Described reductive agent is a kind of in sodium phosphite, dimethylamine borane, tetrahydro boron sodium, the hydrazine hydrate or with several;
Described complexing agent and buffer reagent are a kind of in Trisodium Citrate, Seignette salt, boric acid, the ammonia chloride or with several;
Step C. aftertreatment: plating powder and solution separating being filtered, with the water purification washing, at 70-90 ℃ vacuum oven 1-1.5 hour, and then exsiccant plating powder 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 wear resistance and the hardness of preparing with ultra-fine hard alloy composite powder of the present invention, bending strength and fracture toughness property 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 wolfram varbide and cobalt compound, and its preparation technology is simple, and is with low cost, is suitable for conventional production.
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.
Pre-treatment Fei Shi mean particle size is tungsten carbide wc and tantalum carbide TaC (niobium carbide NbC) the mixed powder 94g of 0.8 μ m, wherein tungsten carbide wc powder 93.5g, tantalum carbide TaC (niobium carbide NbC) powder 0.5g.With mixed powder and alcohol 25mL uniform mixing, treat that its activation disperses after, as the matrix of plating.The mixed powder of pretreated tungsten carbide wc and tantalum carbide 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; Trisodium Citrate (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 controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then exsiccant plating powder 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 mean particle size is 0.9 μ m.
Embodiment 2:
WC-5% (weight) TiC-0.5% (weight) VC (Cr
3C
2)-10% (weight) Co composite powder.
Pre-treatment Fei Shi mean particle 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 and alcohol 25mL uniform mixing, 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; Trisodium Citrate (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 controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 80 ℃ vacuum oven 1 hour, and then exsiccant plating powder 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 mean particle size is 0.8 μ m.
Embodiment 3:
WC-1% (weight) TaC (NbC)-8% (weight) Co composite powder.
Pre-treatment Fei Shi mean particle size is the tungsten carbide wc of 0.4 μ m and tantalum carbide TaC (niobium carbide NbC) the mixed powder 92g of 0.6 μ m, wherein tungsten carbide wc powder 91g, tantalum carbide TaC (niobium carbide NbC) powder 1g.With tungsten carbide wc and tantalum carbide TaC (niobium carbide NbC) mixed powder and alcohol 25mL uniform mixing, treat that its activation disperses after, as the matrix of plating.Pretreated tungsten carbide wc and tantalum carbide 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; Trisodium Citrate (Na
3C
6H
5O
72H
2O): 50g/L, ammonia chloride (NH
4Cl): 70g/L.Adjust plating bath pH to 9.5, remain on 95 ℃ with water bath heating controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then exsiccant plating powder 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 mean particle size is 0.5 μ m.
Embodiment 4:
WC-6% (weight) TiC-4% (weight) TaC (NbC)-8% (weight) Co composite powder.
Pre-treatment Fei Shi mean particle size is the tungsten carbide wc of 0.6 μ m and titanium carbide TiC and tantalum carbide TaC (niobium carbide NbC) the mixed powder 92g of 0.8 μ m, wherein tungsten carbide wc powder 82g, titanium carbide TiC powder 6g, tantalum carbide TaC (niobium carbide NbC) powder 4g.With mixed powder and alcohol 25mL uniform mixing, 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
2O
2H
2O): 28g/L; Trisodium Citrate (Na
3C
6H
5O
72H
2O): 50g/L, ammonia chloride (NH
4Cl): 70g/L.Adjust plating bath pH to 9.5, remain on 95 ℃ with water bath heating controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 95 ℃ vacuum oven 1.5 hours, and then exsiccant plating powder 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 mean particle size is 0.75 μ m.
Embodiment 5:
WC-6% (weight) Co-0.5% (weight) TaC (NbC) composite powder.
Pre-treatment Fei Shi mean particle size is tungsten carbide wc and tantalum carbide TaC (niobium carbide NbC) the mixed powder 94g of 0.8 μ m, wherein tungsten carbide wc powder 93.5g, tantalum carbide TaC (niobium carbide NbC) powder 0.5g.With mixed powder and alcohol 25mL uniform mixing, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder (mixed powder of tungsten carbide wc and tantalum carbide 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; Seignette salt (KNaC
4H
4O
64H
2O): 110g/L).Adjust plating bath pH to 9.5, remain on 80 ℃ with water bath heating controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then exsiccant plating powder 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 mean particle size is 0.9 μ m.
Embodiment 6:
WC-6% (weight) TiC-4% (weight) TaC (NbC)-8% (weight) Co composite powder.
Pre-treatment Fei Shi mean particle size is the tungsten carbide wc of 0.6 μ m and titanium carbide TiC and tantalum carbide TaC (niobium carbide NbC) the mixed powder 92g of 0.8 μ m, wherein tungsten carbide wc powder 82g, titanium carbide TiC powder 6g, tantalum carbide TaC (niobium carbide NbC) powder 4g.With mixed powder and alcohol 25mL uniform mixing, 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; Seignette salt (KNaC
4H
4O
64H
2O): 90g/L).Adjust plating bath pH to 9.5, remain on 85 ℃ with water bath heating controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 95 ℃ vacuum oven 1.5 hours, and then exsiccant plating powder 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 mean particle size is 0.75 μ m.
Embodiment 7:
WC-6% (weight) Co-0.5% (weight) TaC (NbC) composite powder.
Pre-treatment Fei Shi mean particle size is tungsten carbide wc and tantalum carbide TaC (niobium carbide NbC) the mixed powder 94g of 0.8 μ m, wherein tungsten carbide wc powder 93.5g, tantalum carbide TaC (niobium carbide NbC) powder 0.5g.With mixed powder and alcohol 25mL uniform mixing, treat that its activation disperses after, as the matrix of plating.Pretreated carbide powder (mixed powder of tungsten carbide wc and tantalum carbide 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; Seignette salt (KNaC
4H
4O
64H
2O): 80g/L), ammonia chloride (NH
4Cl): 50g/L.Adjust plating bath pH to 9.5, remain on 80 ℃ with water bath heating controlled temperature, mechanical stirring speed is 200 rev/mins.Coating after experiment finishes, plating powder and solution separating are filtered, wash with water purification, 80 ℃ vacuum oven 1.5 hours, and then exsiccant plating powder 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 mean particle size is 0.9 μ m.
Claims (5)
1. ultra-fine hard alloy composite powder, it is characterized in that: the ultra-fine hard phase wolfram varbide in this composite hard alloy powder and other carbide are as titanium carbide, tantalum carbide, niobium carbide, vanadium carbide and/or chromium carbide, coated by cobalt phase ultrafine powder uniform particles fully and form the Fei Shi mean particle size of described ultra-fine hard alloy composite powder≤1 μ m.
2. make the method for the described ultra-fine hard alloy composite powder of claim 1, its preparation method comprises following processing step:
Steps A. superfine tungsten carbide and various carbide powder pre-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, tantalum carbide TaC, niobium carbide NbC, carbide vanadium vc and/or chromium carbide Cr
3C
2Uniform mixing, treat that its activation disperses after, as the matrix of plating;
The preparation of step B. cobalt coating: pretreated wolfram varbide and various carbide powder mix are poured in the 1000mL electroless cobalt plating liquid, and the post-heating that stirs is to 80-95 ℃, and constant temperature also constantly stirs, and up to no longer producing bubble, reacting and finish, forms the cobalt plating layer; Each component concentration is Cobalt salts 30-50g/L, reductive agent 4-101g/L, complexing agent and buffer reagent 30-130g/L in the electroless cobalt plating liquid;
Step C. aftertreatment: plating powder and solution separating being filtered, with the water purification washing, at 70-90 ℃ vacuum oven 1-1.5 hour, and then exsiccant plating powder 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.
3. the preparation method of ultra-fine hard alloy composite powder as claimed in claim 2, it is characterized in that: among the described step B, described Cobalt salts is rose vitriol or cobalt chloride.
4. the manufacture method of ultra-fine hard alloy composite powder as claimed in claim 2 is characterized in that: among the described step B, described reductive agent is a kind of in sodium phosphite, dimethylamine borane, tetrahydro boron sodium, the hydrazine hydrate or with several.
5. the manufacture method of ultra-fine hard alloy composite powder as claimed in claim 2 is characterized in that: among the described step B, described complexing agent and buffer reagent are a kind of in Trisodium Citrate, Seignette salt, boric acid, the ammonia chloride or with several.
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 true CN101161841A (en) | 2008-04-16 |
| CN100548539C 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) |
Cited By (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 |
| CN104016593A (en) * | 2014-06-13 | 2014-09-03 | 中北大学 | Chemical plating method for coating metal cobalt on surfaces of glass beads or glass fibers |
| CN104232967A (en) * | 2014-10-10 | 2014-12-24 | 台州学院 | Method for preparing low binder phase wolfram carbide hard alloy |
| WO2015169132A1 (en) * | 2014-05-09 | 2015-11-12 | 湖南顶立科技有限公司 | Method for preparing wc-co powder used for thermal spraying |
| CN106956007A (en) * | 2017-03-23 | 2017-07-18 | 洛阳理工学院 | A kind of graded composite cutter material and preparation method |
| 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 |
| CN111699062A (en) * | 2018-02-14 | 2020-09-22 | H.C.施塔克钨业股份有限公司 | Powder comprising coated hard material particles |
| CN112063871A (en) * | 2020-09-02 | 2020-12-11 | 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
Cited By (10)
| 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 |
| WO2015169132A1 (en) * | 2014-05-09 | 2015-11-12 | 湖南顶立科技有限公司 | Method for preparing wc-co powder used for thermal spraying |
| CN104016593A (en) * | 2014-06-13 | 2014-09-03 | 中北大学 | Chemical plating method for coating metal cobalt on surfaces of glass beads or glass fibers |
| CN104232967A (en) * | 2014-10-10 | 2014-12-24 | 台州学院 | Method for preparing low binder phase wolfram carbide hard alloy |
| CN106956007A (en) * | 2017-03-23 | 2017-07-18 | 洛阳理工学院 | A kind of graded composite cutter material and preparation method |
| CN106956007B (en) * | 2017-03-23 | 2019-04-30 | 洛阳理工学院 | A kind of graded composite cutter material and preparation method |
| CN111699062A (en) * | 2018-02-14 | 2020-09-22 | H.C.施塔克钨业股份有限公司 | Powder comprising coated hard material 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 |
| CN112063871A (en) * | 2020-09-02 | 2020-12-11 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100548539C (en) | 2009-10-14 |
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 | |
| CN101429652B (en) | Method for plating nickel on iron powder surface | |
| JP5839407B2 (en) | Plating or coating method for producing a metal-ceramic coating on a substrate | |
| CN101906625B (en) | Method for enhancing nickel-phosphorus composite deposit by using modified nano silicon dioxide particles | |
| CN101423398A (en) | Ceramic cladding powder and preparation method thereof | |
| Uysal et al. | Nanostructured core–shell Ni deposition on SiC particles by alkaline electroless coating | |
| CN104862676A (en) | Graphene oxide nickel-phosphorus composite plating solution, preparation method and applications thereof | |
| CN101090786A (en) | Composite powder products for hard metals | |
| CN109175396A (en) | A kind of preparation method of nanometer of covered composite yarn powder | |
| CN101805867B (en) | Si3N4-based metal ceramic and preparation method thereof | |
| CN109365802B (en) | Preparation method of core-shell structure metal ceramic composite powder | |
| CN101985716B (en) | Preparation method of multi-scale double-interface metal ceramic 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 | |
| CN101508023A (en) | Preparation method of carbide-Co/Ni composite powder and hard alloy | |
| CN102251130B (en) | Preparation method of superfine grain cemented carbide | |
| US20050284260A1 (en) | Method for manufacturing the metal coated amorphous 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 | |
| CN108950529A (en) | A kind of tungsten carbide-copper-nickle composite powder preparation method | |
| CN108823553A (en) | A kind of preparation method of diamond surface Electroless Ni-P Plating | |
| CN110899692B (en) | Preparation method of iron-based alloy powder | |
| CN101880810B (en) | Hard alloy containing nickel aluminide and boron copper base and preparation method thereof | |
| CN106835089A (en) | Ni W P Nano-meter SiO_2s2The preparation method of chemical composite plating |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20170929 |