Steam Oxidation Behavior of Austenitic Heat Resistant Steel S31042 at High Temperature
WANG Bin1,2,LIU Zheng-dong1;CHENG Shi-chang1,LIU Chun-ming2,WANG Jing-zhong1,BAO Han-sheng1
1. Special Steel Institute, Central Iron and Steel Research Institute, Beijing 100081, China
2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China
Abstract��Through operating the high temperature steam oxidation equipment under almost the same steam conditions as those in actual boilers, the steam oxidation experiment for S31042 austenite heat-resisting steel in water vapor at 650�� and 700�� was carried out. Morphology of oxidation layer, phases and distribution of chemical compositions were analyzed. The results indicated that the thickness of oxidation layer was increased with increasing test time. The oxidation scale consists of two kinds of layers. The outer layer is rich in Fe oxide with a loose and porous structure, and the inner layer is of Cr oxide enrichment. Fe oxide can be formed with the evaporation of CrO2 (OH)2. The growth rate of steam layer can be decreased with the formation of inner (Fe/Cr)3O4 layer, and the thickness of the oxides would be kept at the steady oxidation stage.
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WANG Bin,,LIU Zheng-dong;CHENG Shi-chang,LIU Chun-ming,WANG Jing-zhong,BAO Han-sheng. Steam Oxidation Behavior of Austenitic Heat Resistant Steel S31042 at High Temperature. Chinese Journal of Iron and Steel, 2013, 31(3): 1-5.
2013, Vol. 31 
