火焰喷涂Ni60和Ni60-WC涂层的组织结构分析
Analysis on Microstructure of Ni60 and Ni60-WC Coatings Prepared by Flame Spraying Process
王 欣, 于荣海
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作者单位：清华大学 材料科学与工程系，北京100084
中文关键字：Ni60-WC； 火焰喷涂； 显微组织
英文关键字：Ni60-WC; flame spraying processes; microstructure
中文摘要：利用火焰喷涂技术制备Ni60和Ni60-WC涂层， 用扫描电镜（SEM）观察涂层的组织形貌。结果表明：Ni60涂层和Ni60-WC涂层均呈冶金结合特征， 与基体结合较好， 仅个别区域存在少量的空洞或缺陷， 无明显空隙， 组织均匀；与Ni60涂层相比， Ni60-WC涂层中有尺寸较大的因未能完全熔解而以块状颗粒存在的WC颗粒。
英文摘要：The Ni60 and Ni60-WC coatings were prepared by flame spraying process, and the microstructure was researched by SEM. The results show: the Ni60 and Ni60-WC coatings are metallurgical bonding and compact. The microstructure of the coatings is symmetrical and the porosity is low. Compared with the Ni60 coatings, some blocky-shaped WC particles with big size are wrapped in the Ni60-WC coatings, because they are not fusible.