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Pressureless Sintering and Reaction Mechanisms of Ti3 SiC2 Ceramics.
- Source :
- Journal of the American Ceramic Society; May2014, Vol. 97 Issue 5, p1407-1412, 6p
- Publication Year :
- 2014
-
Abstract
- Easy sinterable Ti<subscript>3</subscript> SiC<subscript>2</subscript> powder was synthesized from a powder mixture with a molar ratio of 1.0 Ti, 0.3 Al, 1.2 Si, and 2.0 TiC by heating at 1200°C in the flowing Ar. Here, the Al powder acts as a deoxidation agent and provides a liquid phase for the reaction. The powder compacts subjected to pressureless sintering at 1300°C in Ar had a relative density up to 99%. The results of chemical analysis and the measured lattice constant suggest that the Al-Si liquid phase was formed at approximately 1200°C and that liquid-phase sintering was promoted by the 0.1 molar ratio of Al and the 0.2 molar ratio of Si remaining in excess. The three-point bending strength, fracture toughness, and electrical resistivity of the sintered samples were 380 MPa, 4.1 MPa m<superscript>1/2</superscript>, and 0.34μΩm, respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 97
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 96015326
- Full Text :
- https://doi.org/10.1111/jace.12903