以三种酸（HCl、HNO₃、H₂SO₄）与甲醇分别配制成不同pH的酸性溶液作为腐蚀介质，考察了316L不锈钢在超临界水氧化条件下的腐蚀情况。结果表明：在3种腐蚀介质中，随着酸性的增强，316L不锈钢的腐蚀速率增大，其增幅在pH为3~5时最大，在pH为2~3时较小，在pH为5~6时几乎维持不变；316L不锈钢表面的腐蚀产物为Fe₃O₄、（Cr，Ni） Fe₂O₄和Cr₂O₃等氧化物，氧化物种类与酸的类别没有明显关系；在HCl溶液中腐蚀后，316L不锈钢表面并未出现点蚀现象，这与超临界水氧化条件下无法形成稳定的氧浓差电池有关。

The corrosion of 316L stainless steel in an environment of supercritical water oxidation was studied by using three different acidic solutions (HCl, HNO₃, H₂SO₄) mixed with methanol as corrosive media. The results show that the corrosion rates of 316L stainless steel in the three corrosive media were increased with the increase of acidity. And the increase of corrosion rate was the largest when pH value was in the range of 3-5, was smaller when pH value was in the range of 2-3, and was nearly constant when pH value was in the range of 5-6. The corrosion products on the surface of 316L stainless steel were Fe₃O₄, (Cr, Ni) Fe₂O₄ and Cr₂O₃, and the type of oxides had no obvious relationship with the type of acid. There was no pitting corrosion on the surface of 316L stainless steel corroded in HCl solution, due to the failure to form stable oxygen concentration cells in the environment of supercritical water oxidation.