用直接还原碳化法制备了纳米复合WC-Co粉末.根据X射线衍射图研究了直接还原碳化温度及时间对反应产物的影响,用扫描电镜观察了粉末颗粒形貌和粒度分布.结果表明:用直接还原碳化法在950℃碳化4h可以得到100～300nm、无η相的WC-Co复合粉末,该法具有碳化温度低、碳含量容易控制、适合工业化生产的优点.
参考文献
| [1] | G. E. SPRIGGS .A History of Fine Grained Hardmetal[J].International Journal of Refractory Metals & Hard Materials,1995(5):241-255. |
| [2] | L. J. PRAKASH .Application of Fine Grained Tungsten Carbide Based Cemented Carbides[J].International Journal of Refractory Metals & Hard Materials,1995(5):257-264. |
| [3] | 邵刚勤,吴伯麟,魏明坤,袁润章.超细晶粒WC硬质合金的研制动态[J].武汉工业大学学报,1999(06):18-20. |
| [4] | 邵刚勤;吴伯麟;段兴龙 等.用流态化工艺制备WC-Co粉末[J].金属学报,1999,35(02):144-146. |
| [5] | 徐志花,马淳安,甘永平.超细碳化钨及其复合粉末的制备[J].化学通报,2003(08):544-548,543. |
| [6] | El-Eskandarany M S;Mahday A A;Ahamed H A et al.Synthesis and characterization of ball-milled nanocrystalline WC and nanocomposite WC-Co powders and subsequent consolidation[J].Journal of Alloys and Compounds,2000,312:315-325. |
| [7] | Zhou Y T;Manthiram A .A new route for the synthesis of tungsten carbide-cobalt nanocomposite[J].Journal of American Creamic Society,1994,77(10):2777-2778. |
| [8] | Yao Z;Stiglich J J .WC-Co enjoys pround history and bright future[J].Metal Powder Report,1998,2:32-36. |
| [9] | Kim B K;Ha G H;Lee D W et al.Chemical processing of nanostructured cemented carbide[J].Advanced Performance Materials,1998,5:341-352. |
| [10] | Fu L;Cao L H;Fan Y S .Two-step synthesis of nanostructured tungsten carbide-cobalt powders[J].Scripta Materialia,2001,44(07):1061-1068. |
| [11] | 邵刚勤;段兴龙;谢济仁 等.无η相碳化钨-钴纳米复合粉末的工业化制备技术[P].中国发明专利:99 16597 7,1999-08-13. |
| [12] | McCandish L E;Kear B H;Kim B K et al.Spray conver- sion process for the production of nanophase composite powders[P].US Pat:5352269,1994. |
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%