感应重熔对NiCrBSi/WC-Ni复合涂层组织和力学性能的影响

材料热处理学报, 2016, 37(12): 160-166.

感应重熔对NiCrBSi/WC-Ni复合涂层组织和力学性能的影响

万丽宁 ^1, , 董艳春 ^2, , 路项媛 ^3, , 杨勇 ^4, , 褚振华 ^5, , 关少康 ^6,

1.河北工业大学材料学院,天津300130;天津市层状复合及界面控制技术重点实验室,天津300130

2.河北工业大学材料学院,天津300130;天津市层状复合及界面控制技术重点实验室,天津300130

3.河北工业大学材料学院,天津300130;天津市层状复合及界面控制技术重点实验室,天津300130

4.河北工业大学材料学院,天津300130;天津市层状复合及界面控制技术重点实验室,天津300130

5.河北工业大学材料学院,天津300130;天津市层状复合及界面控制技术重点实验室,天津300130

6.河北工业大学材料学院,天津300130;天津市层状复合及界面控制技术重点实验室,天津300130

基金项目: 河北省自然科学基金(E2015202190) 国家自然科学基金(51372065)

关键词： NiCrBSi/WC-Ni复合涂层 , 感应重熔 , 冶金结合 , 耐磨性

Effect of induction remelting on microstructure and mechanical properties of NiCrBSi/WC-Ni composite coatings

Keywords： NiCrBSi/WC-Ni composite coatings , induction remelting , metallurgical bonding , wear resistance

采用大气等离子喷涂制备了NiCrBSi/WC-Ni复合涂层,并采用高频感应加热的方法对涂层进行了重熔处理.与NiCrBSi涂层进行对比,分析了涂层截面的显微组织及涂层与基体界面的结合状况,对重熔前后的两种涂层进行了划痕测试,并对大气等离子喷涂制备的两种涂层在不同载荷进行了耐磨性测试.结果表明,感应重熔使得涂层由机械结合变为冶金结合,增强了涂层的内聚力;感应重熔后,NiCrBSi/WC-Ni复合涂层的附着力大幅度提高,涂层的孔L隙率和显微硬度降低.NiCrBSi/WC-Ni复合涂层的显微硬度和耐磨性远高于NiCrBSi合金涂层.WC-Ni的添加没有对涂层的摩擦系数产生明显的影响.

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