Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 13-14, Pages 4710-4714Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.02.074
Keywords
Tantalum carbide; Spark plasma sintering; Densification
Categories
Funding
- Fundamental Research Funds for the Central Universities [HIT. NSRIF 2010111]
- China Postdoctoral Science Foundation [20090450957]
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Tantalum carbide with a TaC(0.9) composition was sintered to 96% relative density by spark plasma sintering at 1400 degrees C for 5 min, using commercial micrometric Ta and TaC powders as the starting materials. This achievement was dependent on the delicate rearrangement of the heating process which limits evaporation-condensation and promotes the mass transportation in association with 0.9TaC + Ta = TaC(0.9) reaction. The dense TaC(0.9) ceramic had a uniform microstructure composed of equiaxed grains, and showed flexure strength up to similar to 498 MPa. (C) 2011 Elsevier B.V. All rights reserved.
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