Studies on High Temperature Corrosion of Austenitic Heat-resistant Steels Super 304H/10Cr18Ni9Cu3NbN in Simulated and Real Combustion Gas

摘要：

　　High temperature corrosion behavior of austenitic heat-resistant steel Super 304H/10Cr18Ni9Cu3NbN in simulated and real combustion gas conditions was investigated in this paper.An scanning electron microscopy(SEM)equipped with an energy dispersive spectrometer(EDS)was employed to characterize the morphology and cross-section of specimens cut from experimental tubes.Results show different corrosion resistance of Super 304H and 10Cr18Ni9Cu3NbN steels under a simulated condition.High temperature corrosion is a complicated process containing the molten complex alkali-iron tri-sulphate corrosion,high temperature oxidation and sulfuration.The corrosion rate might be controlled by sulfuration of metals.Finally,the exfoliation mechanism of high temperature scales was put forward which is mainly related to the temperature fluctuation and different thermal coefficients of expansion of multi-corrosion layers.

关键词： High temperature corrosion Super 304H steel Oxidation Sulfuration

作者: Qinxin Zhao Zhiyuan Liang Weiwei Jiang

作者单位: Key Laboratory of Thermo-Fluid Science and Engineering(Xian Jiaotong University)Ministry of Education,Xian 710049,P.R.China

会议类型: 国际会议

会议名称: Energy Materials 2014(第一届能源材料国际会议)

会议地点: 西安

会议语种:英文

页码: 243-250

在线出版日期: 2014-11-04（万方平台首次上网日期，不代表论文的发表时间）