Q235钢等离子熔覆Fe基合金+TiC复合涂层组织和性能的研究
Study on Microstructure and Properties of Fe-based Alloy + TiC Coatings on Q235 Steel Prepared by Plasma Cladding Process
王志新, 杨卫铁, 方 伟, 卢金斌
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作者单位：中原工学院 材料与化工学院, 河南 郑州 450007)
中文关键字：Q235钢； 等离子熔覆； TiC； 显微组织； 显微硬度
英文关键字：Q235 steel; plasma cladding; TiC; microstructure; microhardness
中文摘要：利用等离子熔覆技术，在Q235钢基体上熔覆TiC + Fe基合金以获得高硬度的复合涂层。测试了熔覆层的显微硬度，采用金相显微镜、X射线衍射仪研究了熔覆层的组织。结果表明，涂层显微硬度随TiC含量的增加而增大；涂层主要组成为低碳马氏体；TiC主要分布于晶粒内和晶界处。
英文摘要：By plasma cladding technology, high hardness coating with Fe-based alloy + TiC powder was prepared on Q235 steel. The microstructure of the coatings was investigated by optical microscope (OM) and X-ray diffraction (XRD), and the microhardness was also tested. The results show that the composite coating mainly consists of low-carbon martensite, and TiC particle mainly distributes in the grains and grain boundaries. The microhardness of the coatings increases with the increase of TiC content.