（1. College of Intelligent Manufacturing, Zhengzhou Technical College, Zhengzhou 450010, China；
2. Institute of Electrical and Mechanical, Zhongyuan University of Technology, Zhengzhou 450007, China）
Abstract：Mn/Al/B element mixed powders were used as raw material for combustion reaction to synthesize
Mn
2AlB2 material with high content. The synthesis of Mn2AlB2 by combustion reaction in tubular furnace or spark
plasma sintering furnace was systematically studied, and the reaction mechanism of combustion reaction synthesis
of Mn
2AlB2 was put forward. The results show that in the products of combustion reaction in tubular furnace, the
main phases are Mn2AlB2 and MnB, and contain a small amount of Mn2B, Al and AlMnx. Increasing Al content in
raw materials will significantly promote the synthesis of Mn2AlB2. The combustion reaction of Mn/Al/B system be‐
longs to thermal explosion mode, and the heat release of the reaction is low. The sintering activity of the product is
poor and easy to crush. The sample is composed of a large number of Mn2AlB2 lath or massive grains at the level of
several microns and many grains of other phases at the level of submicron. Finally, a reaction mechanism of
Mn
2AlB2 by combustion synthesis reaction is proposed.
2023, Vol. 33 
