超音速火焰喷涂Cr3C2-NiCr涂层磨粒磨损行为Abrasive Wear Behavior of HVOF Deposited Cr3C2-NiCr Coating
纪岗昌,李长久,王豫跃,圆田启嗣
摘要(Abstract)：
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HVOFCr3 C2 2 5 %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。
关键词(KeyWords)： 超音速火焰喷涂(HVOF);Cr3C2-NiCr涂层;磨粒磨损;磨损速率;磨损行为
基金项目(Foundation): 国家自然科学基金资助 (59371 0 61 )
作者(Author): 纪岗昌,李长久,王豫跃,圆田启嗣
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