孟祥军,欧阳春生,刘秀波,罗迎社,许继星,王威,肖敏,卢迎,李梓祥

• 1:江苏城乡建设职业学院公用事业学院
• 2:湖南交通工程学院交通运输工程学院
• 3:中南林业科技大学
• 4:材料表界面科学与技术湖南省重点实验室

摘要(Abstract)：

为了提高304不锈钢的耐磨减摩性能，采用激光熔覆技术在其表面制备了Co-2%Ti_3SiC_2复合涂层。通过扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对Co-2%Ti_3SiC_2复合涂层的微观结构进行表征，并分析了304不锈钢基体与Co-2%Ti_3SiC_2复合涂层在等温摩擦实验(25和600℃)中不同载荷(2、5和8 N)下的摩擦学性能和磨损机理。结果表明：Co-2%Ti_3SiC_2复合涂层主要由γ-Co固溶体，硬质相Fe_2C、Cr_7C_3和TiC及润滑相Ti_3SiC_2组成。Co-2%Ti_3SiC_2复合涂层的平均显微硬度为358.61 HV0.5,约是304不锈钢基体(239.32 HV0.5)的1.5倍。在等温摩擦实验中，Co-2%Ti_3SiC_2复合涂层的磨损率均随着载荷的增加而减少，而摩擦系数在室温下随载荷的增加先增大后减小，在高温(600℃)下随载荷的增加而减小。在不同温度及载荷下，Co-2%Ti_3SiC_2复合涂层的磨损机理略有不同。

关键词(KeyWords)： 304不锈钢;Co-2%Ti_3SiC_2复合涂层;激光熔覆;摩擦学性能

Abstract:

Keywords:

基金项目(Foundation): 江苏高校青蓝工程资助(苏教师函[2022]51号);; 苏高职培函[2022]12号(2022QYSJ012);; 苏城建院科研团队—新材料创新与可持续应用研究团队;; 2022年湖南省教育厅科学研究一般项目(22C0936);; 2022年国家级大学生创新训练项目(202213924002)

作者(Author): 孟祥军,欧阳春生,刘秀波,罗迎社,许继星,王威,肖敏,卢迎,李梓祥

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