期刊
SCRIPTA MATERIALIA
卷 63, 期 6, 页码 577-580出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.06.006
关键词
Spark plasma sintering; Tantalum carbide; Densification; Grain growth
类别
资金
- National Science Foundation Division of Civil and Mechanical Systems and Manufacturing Innovations (NSF) [CMMI 0758232]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0758232] Funding Source: National Science Foundation
A tantalum carbide powder was consolidated by spark plasma sintering. The specimens were processed under various temperature and pressure conditions and characterized in terms of relative density, grain size, rupture strength and hardness. The results are compared to hot pressing conducted under similar settings. It is shown that high densification is accompanied by substantial grain growth. Carbon nanotubes were added to mitigate grain growth; however, while increasing specimens' rupture strength and final density, they had little effect on grain growth. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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