研究了离子渗氮处理工业纯钛TA2与硬质材料对磨的磨损性能.采用球盘摩擦磨损试验机评价摩擦学性能,选取了3种硬度的对磨副材料SiO2、A1203、ZrO2.利用光学显微镜、白光三维形貌仪、X射线衍射仪和显微硬度计分别对渗氮前后TA2的微观组织结构和硬度进行表征,并分析磨痕的表面形貌及元素组成.结果表明,渗氮后TA2表面生成了80 μm厚的TiN、Ti2N和α-Ti(N)硬质相渗氮层,表面硬度由140 HV提高至1260 HV,耐磨性能得到了提高.未处理样品的磨损机制主要是严重的黏着磨损、塑性形变和一定程度的磨粒磨损;渗氮样品的磨损机制主要为磨粒磨损,磨损率随对磨副材料硬度的升高而增大.
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