肖代红,贺跃辉,宋旼,申婷婷,欧小琴

• 1:中南大学粉末冶金国家重点实验室

摘要(Abstract)：

通过球磨与真空烧结方法,制备了含VC与NbC的超细晶WC-10Co硬质合金。采用X射线衍射、扫描电镜和硬度及断裂韧性测试,研究了微量VC与NbC对超细晶WC-10Co硬质合金的组织与性能影响。结果表明,添加微量VC与NbC,能明显提高基体合金的硬度与断裂韧性,降低硬质合金中WC晶粒的长大,WC的平均晶粒尺寸从673 nm降低至430 nm。同时也减少了烧结过程中Co3W3C相的形成。

关键词(KeyWords)： 超细晶硬质合金;碳化钒;碳化铌;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50823006),国家自然科学基金创新研究群体科学基金(50721003);; 中国博士后特别资助科学基金(200801348);; 湖南省科技计划博士后专项(2009RS3025);; 国家杰出青年科学基金(50825102)

作者(Author): 肖代红,贺跃辉,宋旼,申婷婷,欧小琴

DOI: 10.13289/j.issn.1009-6264.2010.10.011

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