Thermodynamics of Modifying Effect and Experiment Research of Rare Earth in Plasma Jet Surface Metallurgy

摘要：

The Fe-based composite coatings with RE oxides were prepared on low-carbon steel substrate by use of the plasma jet surface metallurgy, and the effect of RE on microstructure of coating was investigated. The result shows that the microstructure and properties with a proper amount of RE oxides are better than these of the coatings without RE oxides. In addition, the modifying effect of RE oxide on inclusions in metallurgical coating was studied by means of thermodynamics. The thermodynamics analysis shows that RE oxide (Ce2O3) can be reduced to RE by carbon, then the RE element can react with oxygen and sulfur to form the RE oxide-sulfide in metallurgical pool. As a result, the coating is purified and the solidification crack of coating can be restrained by deoxidization and desulphurization.

关键词： rare earth plasma jet surface metallurgy thermodynamics properties

作者: Hao Chen Jiangao Yang Misong Chen

作者单位: School of Materials and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou,34 Engineering Research of Center of High-efficiency Development and Application Technology of Tungsten School of Materials and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou,34

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 89-92

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）