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2 304L不锈钢在135 ℃下不同NaNO3浓度的HNO3-NaNO3水溶液和蒸汽中的腐蚀速率

Table 2 Corrosion rates of 304L stainless steel in the solutions and steams of 2%HNO3-(0, 10%, 15%, 23%) NaNO3at 135 ℃

Corrosive medium Liquid phase corrosion rate / mm·a-1 Vapor phase corrosion rate / mm·a-1 2%HNO3 0.015 0.003 2%HNO3-10%NaNO3 0.023 0.036 2%HNO3-15%NaNO3 0.029 0.051 2%HNO3-23%NaNO3 0.262 0.060 4%HNO3 0.016 0.077 4%HNO3-10%NaNO3 0.047 0.078 4%HNO3-15%NaNO3 0.054 0.084 4%HNO3-23%NaNO3 0.326 0.093