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Formation Mechanism of Spherical TiC in Ni-Ti-C System during Combustion Synthesis
Guoliang Zhu1,2, Wei Wang3,4, Rui Wang5,6
1Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai 200240, China. glzhu@sjtu.edu.cn.
Abstract:
The formation mechanism of TiC particles in a Ni-Ti-C system were revealed by using differential thermal analysis (DTA), XRD, and SEM to identify the reaction products in different temperature ranges. The results indicated that the synthesis mechanism of TiC in Ni-Ti-C system was complex; several reactions were involved in the combustion synthesis of TiC-Ni composite. The Ni-Ti intermediate phases play important roles during the formation of TiC. Moreover, the influence of heating rate on the size range of TiC was also discussed.
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