Hot Pressing of Tantalum Carbide with and Without Sintering Aids
Densification of Tantalum Carbide was studied by hot pressing at temperatures ranging from 1900 to 2400 C with and without sintering additives. Without sintering additives, the relative density increased from 75% at 1900 C to 96% at 2400C. a microstructural examination showed no observable grain growth up to 2300 C. Densification was enhanced with Carbon (C) and/or B4C additions. TaC with a 0.78 wt% C addition achieved a relative density of 97% at 2300C. Additions of 0.36 wt% B4C or 0.43 wt% B4C and 0.13 wt% C increased the relative density to 98% at 2200C, accompanied by rapid grain growth at 2100C and highertemperatures.
S. C. Zhang et al., "Hot Pressing of Tantalum Carbide with and Without Sintering Aids," Journal - American Ceramic Society, Wiley-Blackwell, Jan 2007.
The definitive version is available at http://dx.doi.org/10.1111/j.1551-2916.2006.01416.x
Materials Science and Engineering
Keywords and Phrases
Hot Pressing; Sintering Aid; Tantalum Carbide
Article - Journal
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