Microstructure and Properties of Cast Iron Using Chromizing Process

摘要：

　　Cast iron was chromized by solid powder method at 1000℃.Micro-morphology and microstructure of chromized alloy layer and cast iron matrix were analyzed,their hardness,elements distribution and corrosion resistance were studied in depth.The analysis results revealed that the chromized carbide-chromium layer grew well on cast iron surface,which was smooth and free from macroscopic defect.Campared with the hardness of original cast iron matrix,the hardness of the chromized alloy layer has been improved by 3.5 times,which was as high as 918.8 HV.And the corrosion resistance of the chromized alloy layer has been greatly improved.The relative corrosion rate of the original cast iron matrix was 2.2 times that of the chromized alloy layer according to their polarization curves.

关键词： Chromizing process Cast iron Microhardness Corrosion resistance

作者: Guodong Zhang Hongmei Cao Jinfei Xu

作者单位: School of Power and Mechanical Engineering,Wuhan University,Wuhan,Hubei,430072,China

会议类型: 国际会议

会议名称: the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

会议地点: 西安

会议语种:英文

页码: 416-419

在线出版日期: 2012-06-12（万方平台首次上网日期，不代表论文的发表时间）