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Densification, microstructure and mechanical properties of TiB2-B4C based composites

浮标添加于 2010-11-1 15:02 | 1929 次阅读 | 0 个评论

作者
Tuff
摘要
The effect of boron carbide (B4C) additions on the densification and sintering behavior of a titanium diboride (TiB2) matrix was determined. Due to the milling process, iron and tungsten carbides (WC-Co) were included as a contaminant or a third phase in the composite. When adding from 10 to 30 wt% of B4C to TiB2 along with 0.5 wt% Fe sintered densities were increased from 96 to 99.9%. A small amount (0.5 wt% Fe) enhanced densification of TiB2. However, larger quantity (5 wt% Fe) leads to volatilization of the iron when sintering at high temperature and exaggerated grain growth. Solid solutions of (Ti,W)B2 were also detected when 3 wt% WC-Co was present. Microstructural coarsening was inhibited by incorporation of B4C particles and mechanical properties were consequently improved.
详细资料
- 文献种类: Journal Article
- 期刊名称: International Journal of Refractory Metals and Hard Materials
- 期卷页: 1996年第14卷第5-6期 305-310页
- 日期: 1996
- ISBN: 0263-4368
学科领域工程技术 » 材料科学
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