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| High-Temperature Oxidation Resistance of Austenitic Stainless Steel Cr18Ni11Cu3Al3MnNb |
| LI Dong-sheng,DAI Qi-xun,CHENG Xiao-nong,WANG Rong-rong,HUANG Yan |
| School of Material Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, China |
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Abstract The kinetic curve of the high-temperature oxidation of austenitic stainless steel Cr18Ni11Cu3Al3MnNb at different temperatures was measured by weighting method. It is showed that the oxidation curves at 700 and 800 �� followed the parabolic law, and the steel presented an excellent anti-oxidation. The surface morphology and structure of the oxide film were studied by scanning electron microscopy and X-ray diffraction methods. A dense oxide film was attained at 700 and 800 ��, mainly composed of the hexagonal Al2O3, Fe2O3, and a small amount oxide of Cr at 700 ��. At 900 �� the oxide film started to delaminate, and was composed of (Cr,Fe)2O3 and the spinel CuCrMnO4 and Fe(Cr,Al)2O4.
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Received: 01 June 2011
Published: 29 May 2012
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2012, Vol. 19 
