316L不锈钢在高含氯离子乙二醇中的腐蚀行为

Corrosion Behavior of 316L Stainless Steel in High Chloride Ion Ethylene Glycol

采用失重法实验研究了温度、Cl-浓度对316L不锈钢腐蚀动力学行为的影响;实验判别了316L的晶间腐蚀倾向。结果表明:在Cl-质量浓度为36 516 mg/L,Fe3+质量浓度为776 mg/L的情况下,316L的腐蚀速率随温度的升高而增大,温度超出60℃时腐蚀速率迅速增大,120℃时腐蚀速率达到最大值0.0781 mm/a;根据晶间腐蚀标准可知,316L不锈钢在氯离子含量较高的乙二醇溶液中具有晶间腐蚀倾向。

The effect of the temperature and Cl concentration on the corrosion dynamic behavior of 316L stainless steel using weightlessness method; The intergranular corrosion tendency of 316L was determined. The experimental results shown that the corrosion rate of 316L stainless steel increases with rising of temperature when the Cl concentration is 36516 mg/L and Fe3＋ concentration is 776 mg/L; When the temperature is over 60 ℃ ,the corrosion rate increases rapidly, and up to maximum 0. 0781 mm/a at 120 ℃ ; 316L stainless steel has a tendency to intergranular corrosion according to intergranular corrosion standard.