Thermodynamic Analysis of Ni-Al-WC System during Self-Propagating High Temperature Synthesis

Abstract:

Ni-Al-WC ternary system during self-propagating high-temperature synthesis (SHS) was analyzed and calculated based on thermodynamic principle, and the curves of adiabatic temperature (T_ad) and preheating temperature (T₀) and WC content (wt.%) were drawn. The results showed that adiabatic temperature of the system decreased with the increase of WC content and the maximum of WC content was about 34 wt.% for preheating temperature of 933K. Adiabatic temperature increased with increasing preheating temperature and properly increasing preheating temperature could promote the reaction self-sustaining when WC content was excessive and adiabatic temperature was less than 1912K.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 1569-1574
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.1569
• Online since: June 2017
• Authors: Jian Jun Yuan*, Xin Ying Liu, Dong Min Li, Shu Mei Lou
• Keywords: Adiabatic Temperature, NiAl/WC Composites, Self-Propagating High-Temperature Synthesis, Thermodynamic

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