304L不锈钢在硝酸-硝酸钠环境中的腐蚀研究

刘希武,赵小燕,崔新安,许兰飞,李晓炜,程荣奇

Corrosion Behavior of 304L Stainless Steel in Nitric Acid-Sodium Nitrate Solutions

Xiwu LIU,Xiaoyan ZHAO,Xin'an CUI,Lanfei XU,Xiaowei LI,Rongqi CHENG

表1 304L不锈钢在NaNO₃、HNO₃及HNO₃-NaNO₃的水溶液和蒸汽中的腐蚀速率

Table 1 Corrosion rates of 304L steel in NaNO₃, HNO₃and HNO₃-NaNO₃solutions and steams

Temperature / ℃	Corrosive medium / %	Liquid phase corrosion rate / mm·a^-1	Vapor phase corrosion rate / mm·a^-1
135	23%NaNO₃	＜0.001	＜0.001
135	2%HNO₃	0.015	0.003
135	2%HNO₃-23%NaNO₃	0.262	0.060
135	4%HNO₃	0.016	0.077
135	4%HNO₃-23%NaNO₃	0.326	0.093