The citric acid passivation process of 316L stainless steel was studied by means of orthogonal test and its influence on pitting corrosion resistance was evaluated by potentiodynamic method.

• 采用正交试验方法研究了316L不锈钢柠檬酸钝化工艺,利用电化学测试方法测量了不锈钢焊接接头各部位在钝化前后点蚀电位的变化,并以此评价钝化工艺对不锈钢耐点蚀性能的影响。