中文摘要：

在各种各样的应力下面的 316L 不锈钢(316L SS ) 的 Pitting 腐蚀被 potentiodynamic 学习在 3.5% NaCl 答案的极化，电气化学的阻抗光谱学(EIS ) 和 Mott-Schottky (MS ) 分析。极化曲线的结果证明随压力的增加， pitting 潜力和被动当前的密度显著地减少 fi rstly (180 MPa ) ，然后极大地增加(200 MPa ) 。在极化测试以后的样品的相应表面形态学很好对应于结果。Mott-Schottky 分析证明了在潜力与更积极的 fl 吸附到被动 fi lm 的表面的最少的 Cl，显示一个中等压力能增加在 3.5% NaCl 答案的 316L SS 的 pitting 腐蚀电阻。

英文摘要：

Pitting corrosion of 316L stainless steel （316L S S） under various stress was studied by potentiodynamic polarization, electrochemical impedance spectroscopy （EIS） and Mott-Schottky （M-S） analysis in 3.5% NaC1 solution. The results of polarization curves show that, with the increase of the stress, the pitting potentials and the passive current density markedly decrease firstly （180 MPa）, and then increase greatly （200 MPa）. The corresponding surface morphologies of the samples after the polarization test well correspond to the results. Mott-Schottky analysis proved the least C1- adsorbed to the surface of passive film with more positive flat potential, indicating that a moderate stress could increase the pitting corrosion resistance of 316L SS in 3.5% NaC1 solution.