通过真空液相烧结制备出Ti(C,N)基金属陶瓷基体,并对基体表面进行双辉等离子渗碳处理.运用扫描电子显微镜(SEM)、电子探针(EPMA)、X射线衍射(XRD)等分析手段对渗碳前后材料的显微组织形貌、成分分布以及物相组成进行分析.结果表明,双辉等离子渗碳后金属陶瓷表面富Ti、Mo、W、C、N元素,贫Ni.渗碳过程中表层高的碳活度驱使内部的Ti、Mo、W元素向外迁移,从而迫使Ni向内迁移.渗碳后,材料表层富硬质相,近表层富粘结相.渗碳处理使试样表层硬度得到提高,对横向断裂强度影响不大.
参考文献
| [1] | Ettmayer P,Kolaska H,Lengauer W,et al.Ti(C,N)-based cermets-metallurgy and properties[J].Refractory Metals & Hard Materials,1995,13(6):343-351. |
| [2] | Michael P L,Hugh A B.Pressureless sintering of particlereinforced metal-ceramic composites for functionally graded materials[J].Acta Materialia,2006,54(6):1457-1474. |
| [3] | Suresh S,Mortensen A.功能梯度材料基础--制备及热机械行为[M].李守新,译.北京:国防工业出版社,2000:7-21. |
| [4] | Walter L,Klaus D.Functionally graded hardmetals[J].Journal of Alloys and Compounds,2002,338(2):194-212. |
| [5] | Janisch D S,Eder A,Dreyer K,et al.Sintering characterization and analysis of functional gradient hardmetal[J].International Journal of Refractory Metals & Hard Materials,2008,26(3):179-189. |
| [6] | Zackrisson J,Rolander U,Weinl G,et al.Effect of carbon content on the microstructure and mechanical properties of (Ti,W,Ta,Mo)(C,N)-(Co,Ni) cermets[J].International Journal of Refractory Metals & Hard Materials,1999,17(5):265-273. |
| [7] | Yong L,Haibing W,Peter K L,Baiyun H.Microstructural evolution and mechanical behaviors of graded cemented carbides[J].Materials Science and Engineering A,2006,426(2):346-354. |
| [8] | 葛志明.钛的二元系相图[M].北京:国防工业出版社,1977:12-26. |
| [9] | 李争显,徐重,周廉.钛表面辉光等离子无氢渗碳的研究[J].稀有金属材料与工程,2004,33(11):1174-1177.Li Zhengman,Xu Zhong,Zhou Lian.Double-glow plasma surface carbon implantation of non-hydrogen on titanium[J].Rare Metal Materials and Engineering,2004,33(11):1174-1177. |
| [10] | 张高会.钛及钛合金Ti6A14V双层辉光离子无氢渗碳及无氢碳氮共渗的研究[D].太原:太原理工大学.2004. |
| [11] | 余宗森,陈宁.γ-Fe中硼的扩散机制[J].金属学报,1992.28(3):A104-A108.Yu Zongsen,Chen Ning.Mechanism for diffusion of boron in γ-Fe[J].Acta Metallurgica Sinica,1992,28(3),A104-A108. |
| [12] | Bandyopadhyay D,Sharma R C,Chakraborti N.The Ti-Ni-C system (titanium-nickel-carbon)[J].Journal of Phase Equilibria,2000,21(2),168-191. |
| [13] | Chen Limin.Advances in modern nitrogen-containing hardmetals and cermets[J].International Journal of Refractory Metals & Hard Materials,2000,18(2/3):153-161. |
| [14] | Chen Limin,Walter L,Ettmayer P,et al.Fundamentals of liquid phase sintering for modern cermets and functionally graded cemented carbonitride (FGCC)[J].International Journal of Refractory Metals & Hard Materials,2000,18(6):307-322. |
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%