Mathematical and experimental investigation of the self-propagating high-temperature synthesis (SHS) of TiAl3and Ni3Al intermetallic compounds

✍ Scribed by H. Y. Sohn; X. Wang

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 685 KB
• Volume: 31
• Category: Article
• ISSN: 0022-2461
• DOI: 10.1007/bf00354680

✦ Synopsis

One-dimensional mathematical modeling was used to describe the self-propagating high-temperature synthesis (SHS) process for preparing TiAI3 and NiaAI intermetallics. The kinetic parameters (activation energies and pre-exponential factors) for the two compounds were obtained by matching experimental measurement and the numerical solution. The results thus obtained were compared with rate parameters obtained using different methods. The activation energy was 483 and 283 kJ mo1-1 for the formation of TiAI3 and Ni3AI, respectively. The temperature profiles calculated using the mathematical model were compared with experimental measurements for both aluminides which indicated reasonable agreement. Fine particle size and moderate preheating increase the SHS rates.