Corrosion behavior of stainless steels in supercritical water
The preliminary study of the general corrosion behaviors of austenitic steels and ferritic steel in supercritical water is investigated in this paper. After exposed to deaerated supercritical water at 480℃/25MPa for 500h, the above stainless steel samples were examined by means of gravimetry, scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) and X-ray diffraction (XRD), respectively. The results show that 304NG steel with a higher Cr content has the best corrosion-resistant performance than the steels. In addition to a oxide layer mixed with Fe<,3>O<,4> and (Fe, Cr)<,3>O<,4> formed on all of the samples, a Fe<,3>O<,4> loose outer layer was observed on 410. The corrosion mechanism of stainless steel in supercritical water is discussed based on the above results.
stainless steel supercritical water corrosion oxide layer
Xin Luo Rui Tang Cong Li Chongsheng Long Zhi Miao Qian Peng
National Key Laboratory of Nuclear Fuel and Materials, Nuclear Power Institute of China, P. O. Box 436, Chengdu, Sichuan, 610041, PR China
国际会议
上海
英文
209-215
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）