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Tape Casting, Pressureless Sintering, and Grain Growth in Ti3SiC2 Compacts
Journal article

Tape Casting, Pressureless Sintering, and Grain Growth in Ti3SiC2 Compacts

A. Murugaiah, A. Souchet, T. El‐Raghy, M. Radovic, Mats Sundberg and M. W. Barsoum
Journal of the American Ceramic Society, v 87(4), pp 550-556
Apr 2004

Abstract

grain growth sinter/sintering tape casting
In this work we demonstrate that fine Ti3SiC2 powders can be tape‐cast and/or cold‐pressed and pressureless‐sintered in Ar‐ or Si‐rich atmospheres to produce fully dense, oriented microstructures in which the basal planes are parallel to the surfaces. Carbon‐ and/or Si‐rich environments suppress grain growth. In the case of the tape casting, the C‐residue from binder burnout results in small core grains relative to the surface grains that can grow significantly. When sintering in high Si activities, titanium silicide phases form at the grain boundaries that slow grain growth. Annealing the latter in Ar at 1600°C, for extended periods (30 h), rids the samples of these grain‐boundary phases, which in turn results in grain growth. The advantage of the latter process is that the final grain size distribution is more uniform from surface to bulk.

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Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Ceramics
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