采用烧结-熔渗和后续热处理工艺制备了Co-Cr-Mo-Si颗粒强化的铁基粉末冶金材料,利用光学显微镜、扫描电镜和能谱分析技术,研究了不同渗铜量对材料显微组织的影响.研究表明:Co-Cr-Mo-Si硬颗粒单独存在于基体中,起颗粒强化的作用;未渗铜时,孔洞多,硬颗粒与基体界面清晰可见,结合强度差,随着渗铜量的增多,合金元素扩散程度提高,硬颗粒与基体界面结合强度好;材料的孔隙度减小,碳化物弥散分布程度提高;采用熔渗工艺并合理控制渗铜量,可获得组织均匀化、各相界面结合较好的铁基粉末冶金材料.
参考文献
| [1] | 曾德麟.粉末冶金材料[M].北京:冶金工业出版社,1987 |
| [2] | JAMES W B .Recent developments in ferrous powder metallurgy alloys[J].International Journal of Powder Metallurgy,1994,30(02):157-162. |
| [3] | 沈均萍 .粉末冶金产品缺陷与显微组织[J].粉末冶金工业,1997,7(03):24-28. |
| [4] | 陈广志;奚杰;田玉清 等.一种高密度粉末冶金气门座的制造方法[P].CN 1273892.A,2000-11-22. |
| [5] | Howard G. Rutz;Francis G. Hanejko .HIGH DENSITY PROCESSING OF HIGH PERFORMANCE FERROUS MATERIALS[J].International Journal of Powder Metallurgy,1995(1):9,11-17-0. |
| [6] | PAGOUNIS E;LINDROOS V K .Processing and properties of particulate reinforces steel matrix composites[J].Materials Science and Engineering,1998,A246:221-234. |
| [7] | 杨瑞成,师瑞霞,王晖,王军民.WC/钢基复合材料奥氏体化后的硬化效应及微观机理[J].复合材料学报,2002(02):41-44. |
| [8] | CHIGNON F .Wear resistance of PM Fe-Cu-C materials containing steel -TiC particles[J].International Journal of Refractory Metals and Hard Materials,1998,7(01):29-33. |
| [9] | KANO M;TANITOMO I .Wear mechanism of high wear-resistant materials for automotive valve trains[J].Wear,1991,151:229-243. |
| [10] | MUKHERJEE S K;COTTERELL B;MAI Y W .Sintered iron-ceramic composites[J].Materials Science,1993,28:129-131. |
| [11] | 邹正光,傅正义,袁润章.自蔓延高温合成TiC复合添加剂增强铁基粉末冶金材料[J].中国有色金属学报,2001(03):408-411. |
| [12] | J. Michalski;J. Marszalek;K. Kubiak .An experimental study of diesel engine cam and follower wear with particular reference to the properties of the materials[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2000(1/2):168-179. |
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%