超音速火焰喷涂Cr3C2-25NiCr涂层高温摩擦磨损性能High temperature wear resistance of HVOF sprayed Cr3C2-25NiCr coating
解明祥,张世宏,李明喜,完卫国,李国徽
摘要(Abstract)：
在两种喷涂参数下,采用超音速火焰喷涂(HVOF)制备了两种Cr3C2-25%NiCr涂层,用金相显微镜和扫描电子显微镜(SEM)表征粉末和涂层的显微组织,用图像处理软件分析涂层孔隙率,并进行涂层维氏显微硬度测试,对涂层进行高温摩擦磨损试验,分析对比了两种涂层的耐磨性,并探讨了磨损机理。结果表明:两种Cr3C2-25%NiCr涂层的孔隙率和硬度,CrC-1为0.90%和848.1 HV1,CrC-2为0.42%和884.6 HV1,涂层的高温磨损主要为粘着磨损伴有颗粒切削和剥落带来的磨粒磨损,其中CrC-2具有较好的耐磨性。
关键词(KeyWords)： 超音速火焰喷涂;Cr3C2-25NiCr涂层;高温摩擦磨损
基金项目(Foundation): 中科院无机涂层材料重点实验室开放课题(KLICM-2011-10)
作者(Author): 解明祥,张世宏,李明喜,完卫国,李国徽
DOI: 10.13289/j.issn.1009-6264.2012.s2.026
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