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Strengthening and toughening of boride and carbide hard material composites

浮标添加于 2010-11-1 15:02 | 2469 次阅读 | 0 个评论

作者
Telle R, Petzow G
摘要
Many of the well-established strengthening and toughening mechanisms for oxide ceramics are also applicable to hard materials based on borides and carbides. Chemical complications, however, limit a similar successful combination of phases, yielding metal matrix cemented borides and transformation toughening by ZrO2 additives. Hence the most encouraging methods for improvement of the mechanical properties are grain size refinement by growth-retarding additives and crack-propagation-influencing mechanisms such as crack deflection, microcrack interaction and crack impediment. Ternary cemented borides, liquid-phase-sintered TiB2, B4C- and SiC-based composites as well as ZrO2-toughened TiB2 are discussed as successful examples.
详细资料
- 文献种类: Journal Article
- 期刊名称: Materials Science and Engineering: A
- 期卷页: 1988年第105-106卷第Part 1期 97-104页
- 日期: 1988
- ISBN: 0921-5093
学科领域工程技术 » 材料科学
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