以Ti、B4C和Fe粉为原料,采用等离子束加热反应合成TiB2-B4C-Fe3(C,B)复合材料,并研究复合材料的物相、组织结构和显微硬度.结果表明:反应生成物相主要有TiB2、B4C以及Fe3(C,B).由于等离子束的快速加热、冷却以及散热具有方向性,板条状TiB2晶粒沿散热最快的方向生长,与白色的Fe3(C,B)相间分布,未反应的B4C被挤压在板条之间;等离子束电流影响单位时间内输入试样的热量,电流越大越有利于TiB2的长大,但降低复合材料硬度.
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