Rapid synthesis of MoAlB ceramic via thermal explosion
Baoyan Liang, Zhen Dai, Wangxi Zhang, Qisong Li, Dongming Niu, Mingli Jiao, Yang Li, Xiaoyan Guan
Abstract
Ceramics with high MoAlB content were rapidly synthesized via thermal explosion by using Mo/Al/B mixed powders as the raw materials. The effects of raw material ratio and heating mode on the phase composition of the products were studied through DSC, X-ray polycrystalline diffractometer, and SEM. Results showed that ceramics with high MoAlB contents could be prepared from 1.1Mo/1.2Al/1.05B powders by using a tubular furnace at 800 °C for 1 min. They could also be obtained from 1.1Mo/1.1Al/1B powders through spark plasma sintering at 1000 °C without holding. Finally, the reaction mechanism of MoAlB material synthesis via thermal explosion was proposed on the basis of thermodynamics analysis.