采用橡胶轮磨损实验机,对不同工艺条件下三种类型粉末制备的HVOF Cr3C2-25%NiCr涂层进行了磨粒磨损实验.发现该涂层的磨损失重量与磨程基本呈现线性关系,磨损率远低于低碳钢.氧气流量、燃气流量适中的条件下制备的涂层磨损率较低.用团聚致密化工艺制备的粉末沉积的涂层耐磨粒磨损性能较好.涂层的磨损机制主要为先期的粘结相优先切削和随后的碳化物剥落,其中碳化物的剥落对磨损过程起制约作用.
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