镍-铬基及其复合涂层的冲蚀磨损性能研究
Research on Erosion Wear Resistance of Ni-Cr Based and Their Composite Coating
朱二雷, 汪刘应, 刘 顾
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作者单位：(第二炮兵工程学院, 陕西 西安 710025)
中文关键字：镍-铬涂层； 梯度涂层； 冲蚀磨损； 冲蚀率
英文关键字：nickel-chromium coating; gradient coating; erosion wear; erosion rate
中文摘要：采用超音速电弧喷涂技术和微弧等离子喷涂技术，在45钢基体上分别制备了Ni-Cr基复合涂层和Ni-Cr/ZrO2梯度涂层。研究了涂层的冲蚀磨损性能，并对涂层的冲蚀磨损形貌及冲蚀磨损机理进行了分析。结果表明，随着冲蚀角度的增大，Ni-Cr基复合涂层与Ni-Cr/ZrO2梯度涂层的冲蚀率都呈现先增加后减小的趋势，并且大约在60°冲蚀角时，冲蚀率达到最大值。
英文摘要：Ni-Cr composite coating and Ni-Cr/ZrO2 gradient coating were respectively deposited on surface of 45 steel by supersonic arc spraying and micro-plasma spraying. The erosion wear resistance of the coating was studied; the erosion wear micrograph and mechanism were analyzed. The results show that the erosion rate of Ni-Cr composite coating and Ni-Cr/ZrO2 gradient coating increases firstly, then decrease with the increase of erosion angle, which approximately to the maximum at 60° erosion angle.