Oxidation studies on TaC based ultra-high temperature ceramic composites under plasma arc jet exposure
Article
Nisar, A, Ariharan, S, Venkateswaran, T et al. (2016). Oxidation studies on TaC based ultra-high temperature ceramic composites under plasma arc jet exposure
. 109 50-61. 10.1016/j.corsci.2016.03.013
Nisar, A, Ariharan, S, Venkateswaran, T et al. (2016). Oxidation studies on TaC based ultra-high temperature ceramic composites under plasma arc jet exposure
. 109 50-61. 10.1016/j.corsci.2016.03.013
An ultra-high temperature ceramic, TaC, is reinforced with SiC and carbon nanotubes (CNTs) to provide protection under extreme thermal and chemical environments. High temperature performance of spark plasma sintered TaC-based composites was evaluated through plasma arc-jet exposure under heat-flux of 2.5 MW/m2 for 30 s. The composite shows a significant improvement in the oxidation resistance compared to that of TaC. Complimentarily, thermogravimetric analyses (up to 1500 °C) elicits shift in the onset temperature of oxide formation from 735 °C in TaC to 901 °C (with synergistic addition of both SiC and CNT) insinuating the enhanced thermal stability of TaC-SiC-CNT composites.
