利用电热爆炸超高速喷涂技术,在低碳钢基体上原位合成了MoSi2及其合金化涂层.采用扫描电子显微镜、X射线衍射仪、能谱仪、显微硬度计等分析了涂层的微观组织、相组成、元素分布及显微硬度.结果显示,三种涂层均由MoSi2或Mo(Si,Al)2主相组成,其显微组织主要为树枝晶,涂层均匀致密,组织细小.涂层的硬度在1200～1440HV之间.加入Cr和Al元素可使硬度降低,合金化主要改变了涂层的相组成和组织组成.涂层与基体之间有原子扩散,为冶金结合.
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