Effect of Cerium on High-Temperature Oxidation Resistance of 00Cr17NbTi Ferritic Stainless Steel

作     者：Xin Li Jun Shu Liqing Chen Hongyun Bi 

作者机构：State Key Laboratory of Rolling and Automation Northeastern University Research Institute of Baosteel State Key Laboratory of Development and Application Technology of Automobile SteelsBaosteel Group Technical Center Faurecia Exhaust Control Technology Development (Shanghai) Co. Ltd 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2014年第27卷第3期

页      面：501-507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：supported by the National High Technology Research and Development Program of China (No. 2012AA03A508) the Fundamental Research Funds for the Central Universities (No. N100507003) 

主　　题：Ferritic stainless steel Oxidation Cerium oxides Cavity 

摘      要：The influence of cerium addition on the isothermal oxidation behavior of 00Cr17NbTi ferritic stainless steel was studied at temperature up to 1,000 ℃ for 100 h in air. The results show that cerium additions can reduce the grain size of this ferritic stainless steel, improve the diffusion of chromium and decrease the critical concentration of chromium to form protective Cr2O3 layer. With the increasing of cerium addition, the oxide particles become smaller and this can increase the rupture strength and spalling resistance of oxide layers. The transport mechanism through the oxide layer is varied from metal transport outward from steel to principally oxygen transport inward with the increase of cerium content, which leads to the lower oxidation rate and the better scale adherence of 00Cr17NbTi ferritic stainless steel.