以0.81 μm的WC粉和1.35 μm的Co粉为原料, 采用高能球磨制备了粉末比表面积为6.82 m2*g-1, 粉末粒度为59.4 nm的WC-8Co混合粉末.将此纳米粉末采用放电等离子体烧结(SPS)制备了WC晶粒度为0.5～0.6 μm、硬度为HRA93.5的超细硬质合金.研究了SPS烧结温度和添加晶粒抑制剂对显微组织与HRA硬度的影响.
参考文献
| [1] | 葛启录,肖振声,韩欢庆.高性能难熔材料在尖端领域的应用与发展趋势[J].粉末冶金工业,2000(01):7-13. |
| [2] | 邬荫芳.“双高”超细合金的研制[J].硬质合金,2000(04):214-20. |
| [3] | 张玉华;张纪生 .超细硬质合金研究综述[J].粉末冶金技术,1995,13(03):216. |
| [4] | G.-L. Tan;X.-J. Wu .Mechanochemical synthesis of nanocrystalline tungsten carbide powders[J].Powder Metallurgy,1998(4):300-302. |
| [5] | Sun J F;Zhang F M;Chen J .Characterizations of ball-milled nanocrystalline WC-Co composite,Powders and Subsequently rapid hot pressing sintered cermets[J].Materials Letters,2003,57:3140. |
| [6] | Seegopaul P;McCandlish L E;Shinnerman F M .Production capabality and powder processing methods for nanostructured WC-Co powder[J].International Journal of Refractory Metals and Hard Materials,1997,15:133. |
| [7] | 孙剑飞,张法明,沈军.纳米WC-Co复合粉末的制备工艺及其烧结特性[J].稀有金属与硬质合金,2002(01):33-37. |
| [8] | Fu L;Cao L H;Fan Y S;Two-step synthesis of nanostructured tungsten carbide-cobalt powders .[J].Scripta Materialia,2001,44:1061. |
| [9] | 微波烧结WC-Co细晶硬质合金的工艺与性能[J].中国有色金属学报,1999(03):465. |
| [10] | 解迎芳,王兴庆,陈立东,李晓东,郭海亮.放电等离子烧结纳米硬质合金的研究[J].硬质合金,2003(03):138-142. |
| [11] | Sadangi R K;Mclanelish L E;Kear B H et al.Grain growth inhibition in liguid phase sintered nanophase WC-Co alloys[J].International Journal of Powder Metallurgy,1999,35:27. |
| [12] | Choi K.;Hwang N.M. .Effect of VC addition on microstructural evolution of WC-Co alloy: mechanism of grain growth inhibition[J].Powder Metallurgy,2000(2):168-172. |
| [13] | Wittmann B;Schubert W D .WCgraingrowthandgraingrowthinhibitioninnickelandironbinderhardmetals[J].International Journal of Refrigeration-Revue Internationale du Froid,2002,20:51. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%