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利用钼粉硅粉间蔓延式燃烧合成工艺制备了ＭｏＳｉ２ 金属间化合物。研究发现：合成中首先在颗粒外表面发生剧烈溶解反应，并形成一厚约２５～３０μｍ的成份梯度变化过渡薄层，ＭｏＳｉ２是在薄层富硅侧以结晶方式形成。合成过程中硅已熔化，并通过ＭｏＳｉ２ 产物颗粒之间的孔隙向钼颗粒表面反应前沿快速铺展，使原硅颗粒处成为与硅颗粒尺寸相当的孤立大气孔，而ＭｏＳｉ２颗粒间孔隙或液态硅流动通道在反应后经历不完全烧结，以分散小气孔形式残留在ＭｏＳｉ２颗粒聚集区中。合成产物均具有大气孔与ＭｏＳｉ ２ 颗粒聚集区混合分布的组织结构特征。
MoSi2 intermetallic compounds were prepared by the combustion synthesis of molybdenum powder silicon powder. It was found that during the synthesis, a sharp dissolution reaction occurred on the outer surface of the particles, and a gradient compositional gradient of about 25-30μm in thickness was formed. MoSi2 was crystallized on the silicon-rich side. During the synthesis, the silicon has melted and rapidly spreads through the pores between the MoSi2 product particles to the front of the molybdenum particle surface reaction so that the original silicon particles become isolated air pores with the size of the silicon particles, while the pores or MoSi2 particles flow or liquid silicon flows The channels underwent incomplete sintering after the reaction, remaining in the MoSi2 particle agglomeration zone in the form of dispersed small pores. The synthesized products have the characteristics of mixed microstructure with the pores and MoSi 2 aggregates.