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

稀土学报(英文版), 2002, 20(4): 291-294.

杨庆祥 ^1, , 赵研辉 ^2, , 李艳丽 ^3, , 姚枚 ^4,

1.College of Materials Science and Engineering, Yanshan Universi ty, Qinhuangdao 066004, China

2.College of Materials Science and Engineering, Yanshan Universi ty, Qinhuangdao 066004, China

3.College of Materials Science and Engineering, Yanshan Universi ty, Qinhuangdao 066004, China

4.College of Materials Science and Engineering, Yanshan Universi ty, Qinhuangdao 066004, China

基金项目: 国家重点实验室基金

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

Keywords： rare earths

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 t hermodynamic analysis for inclusion formation shows that RE oxide can be redu ced to RE element by carbon, then the RE element can react with oxygen and sulfu r to form the RE oxide, RE sulfide and RE oxide-sulfide in hardfacing molten po ol. 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 decr eased.

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

参考文献