王建升,程锐,张瑞珠,严大考

• 1:华北水利水电学院机械学院
• 2:中国水利协会

摘要(Abstract)：

采用电火花沉积工艺,用WC陶瓷硬质合金在铸钢轧辊表面制备了一层合金涂层。采用X射线衍射仪、扫描电镜、显微硬度计等对沉积层的相结构、显微组织、显微硬度及耐磨性能进行了分析。结果表明:沉积层主要由Co3W3C、Fe3W3C、W2C、Si2W等相组成;沉积层与基体呈冶金结合,细小的硬质相弥散分布于沉积层中;沉积层的平均硬度为1915 HV0.3,约是基体硬度(352 HV0.3)的5.4倍;其室温耐磨性能比基体提高了2.1倍,高温耐磨性能比基体提高了1.9倍。室温下沉积层的主要磨损机理为磨粒磨损;高温下沉积层的主要磨损机理为粘着磨损、氧化磨损和疲劳磨损。

关键词(KeyWords)： 电火花沉积;WC沉积层;铸钢轧辊;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 水利部“948”推广项目(No.201048)

作者(Author): 王建升,程锐,张瑞珠,严大考

DOI: 10.13289/j.issn.1009-6264.2012.09.024

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