通过在激光熔覆NiCrBSi涂层(Ni60)中添加钽(Ta)元素来提高900℃热处理后涂层的耐磨性.研究了900℃热处理对激光熔覆NiCrBSi和钽强化NiCrBSi复合涂层显微组织、硬度以及耐磨性能的影响.利用带能谱仪的扫描电镜和衍射仪分析涂层的显微组织和物相.通过盘-销实验评价涂层的耐磨性.结果表明:经过900℃热处理后涂层中的M7C3和M23C6发生了分解,钽强化复合涂层和纯NiCrBSi涂层中的硬度都有所下降,但由于复合涂层中原位生成的TaC未发生分解,使得其硬度和耐磨性都高于纯NiCrBSi涂层.
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