超音速电弧喷涂Ni-Ti涂层的磨粒磨损性能研究
Research on Abrasive Wear Resistance of Ni-Ti Coating Prepared by High Velocity Air-Fuel Arc Spraying
张健，周勇，张志萍
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作者单位：西安石油大学；西安石油大学，西安交通大学；西安石油大学
中文关键字：超音速电弧喷涂；Ni-Ti涂层；耐磨粒磨损性能
英文关键字：high velocity air-fuel arc spraying; Ni-Ti coating; abrasive wear resistance
中文摘要：采用超音速电弧喷涂工艺在2Cr13马氏体不锈钢基体上制备了Ni-Ti涂层。用X射线衍射研究了涂层的相组成，用扫描电子显微镜对涂层的显微结构和磨损后形貌进行了分析，测试了涂层的显微硬度，在橡胶轮磨粒磨损试验机上研究了涂层的耐磨粒磨损性能。结果表明，Ni-Ti涂层主要组织为NiTi（B2）相和一定量的TiO、NiO等氧化物，该涂层不仅有较高的硬度，而且较2Cr13基体有更加良好的耐磨粒磨损性能。
英文摘要：A kind of Ni-Ti coating was prepared on 2Cr13 martensitic stainless steel substrate by high velocity air-fuel arc spraying. The phase composition of the coating was investigated by XRD; the microstructure and the worn surface morphology of the coating were analyzed by SEM; the microhardness of the coating was also determined; the abrasive resistance of the coating was studied by rubber wheel abrasion tester. The results show that Ni-Ti coating is mainly composed of NiTi(B2) phase and some oxides such as TiO and NiO, the coating is of higher hardness and has much better abrasive wear resistance than 2Cr13 substrate.