火焰喷涂Ni基合金涂层的组织与性能
Study on Microstructure and Properties of Nickel-based Alloy Layer by Flame Spray-welded Process
赵鹏威
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作者单位：长春市产品质量监督检验院, 吉林 长春 130012
中文关键字：火焰喷熔； 耐磨性能； 抗热疲劳性能
英文关键字：flame spray-welded method; wear resistance; heat fatigue resistance
中文摘要：利用氧-乙炔火焰喷熔的方法，在低碳钢表面制备Ni60、Ni60+20%WC和Ni包WC三种成分的合金涂层。利用扫描电镜(SEM)和X射线衍射仪(XRD)观察和分析涂层的组织与结构，并对涂层的显微硬度、耐磨性能和抗热疲劳性能进行了试验研究。结果表明：由于涂层组织结构的差异，Ni60-20%WC和Ni包WC合金层具有较好的综合性能。
英文摘要：Three kinds of powder, which are Ni60, Ni60-20%WC and Nickel cladding WC, were sprayed on low carbon steel substrate by means of oxyacetylene flame spray-welded method. The microstructure and composition of the coating were examined using SEM and X-ray diffractometer. The microhardness, wear resistance and heat fatigue resistance were tested. The results show that the comprehensive properties of nickel-coated WC and Ni60+20%WC alloy coating are apparently better than those of Ni60 alloy coating because of different microstructure of the coating.