Thermodynamics of Modifying Effect of Rare Earth Oxide on Inclusions in Hardfacing Metal of Medium-High Carbon Steel

作     者：赵研辉 李艳丽 姚枚 杨庆祥 

作者机构：Coll. of Mat. Sci. and Eng. Yanshan Univ. Qinhuangdao 066004 China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2002年第20卷第4期

页      面：291-294页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：ProjectsupportedbytheNationalKeyLaboratoryofModernWeldingTechnology 

主　　题：rare earths oxide inclusion hardfacing metal thermodynamics 

摘      要：The modifying effect of rare earth (RE) oxide on inclusions in hardfacing metals of medium-high carbon steel was investigated by means of thermodynamics. The thermodynamic analysis for inclusion formation shows that RE oxide can be reduced to RE element by carbon, then the RE element can react with oxygen and sulfur to form the RE oxide, RE sulfide and RE oxide-sulfide in hardfacing molten pool. The deoxidization and the desulphurization can be carried out and the liquid metal can be purified. In addition, RE oxide can also react with sulfur to form RE oxide-sulfide directly. Therefore, the harmful effect of sulfur can be decreased.