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Q235钢表面氩弧熔覆MoNiSi/Ni3Si金属硅化物复合涂层组织与性能研究
Property and microstructure of the argon shielded arc clad MoNiSi/Ni3Si metal silieide alloys composite coating on Q235 steel surface
【摘要】 以Mo粉、Si粉、Ni粉为原料,采用氩弧熔覆技术在Q235钢基材表面原位合成了MoNiSi/Ni3Si金属硅化物复合涂层,分析和测试了涂层的显微组织、显微硬度和耐磨性。结果表明:在Q235钢表面成功制备了以MoNiSi/Ni3Si为基体,以金属硅化物MoNiSi为增强相的复合涂层。性能分析结果表明:涂层的显微硬度可达1000HV,涂层耐磨性较基体提高12倍。
【Abstract】 Metal-silicide composite coating by in situ synthesized MoNiSi/Ni3Si was prepared on the surface of Q235 steel by means of argon arc cladding technique with the pre-alloyed powder of Mo、Si and Ni. The microstructure and properties of coating and the abrasive resistance were investigated by scanning electron microscope and microhardness tester. It is shown by experimental results that,MoNiSi/ Ni3Si-based composite coating strengthened by metal-silicide MoNiSi ,which are directly in-situ generated on the surface of Q235 steel,can be successful obtained. The results of property research show that the maximum hardness of the coating is 1 000 HV,and the abrasive resistance is 12 times as high as the Q235 steel substrate.
【Key words】 argon arc cladding; composite coating; ternary intermetallic compound; wear resistance;
- 【文献出处】 粉末冶金技术 ,Powder Metallurgy Technology , 编辑部邮箱 ,2009年02期
- 【分类号】TG174.44
- 【被引频次】6
- 【下载频次】217