304L不锈钢在Cl^-作用下腐蚀行为的研究

Research on corrosion behavior of 304L stainless steel in the role of Cl^-

通过电化学噪声技术(EN)、动电位扫描法、噪声电阻(Rn)等方法研究了304L不锈钢在含Cl-溶液中的腐蚀行为过程,探讨了Cl-对304L不锈钢腐蚀行为的影响,以及腐蚀的形成、特征、机理。结果表明,由于有Cl-的存在,对不锈钢金属的钝化膜的破坏必然导致腐蚀过程中离子扩散速度的加快,因此,Cl-对304L不锈钢腐蚀行为有着明显的钝化作用。

The corrosion behavior of 304 L stainless steel in the role of Cl-was investigated by electrochemical noise( EN),potentiodynamic method and wavelet transform,as well as noise resistance( Rn). To investigate the effect of Cl-on the corrosion of stainless steel,as well as the formation of corrosion,characteristics,mechanism. It was revealed that due to the presence of Cl-,damage to the stainless steel metal passivation film inevitably lead to accelerate ion diffusion rate in the corrosion process,Cl-on the corrosion behavior of 304 L stainless steel passivation has a significant role.