In order to elucidate the effects of inclusions on the resistance to pitting corrosion of S32205 duplex stainless steel, a potentiodynamic anodic polarization test, a weight loss test, a SEM-EDS analysis, an in situ analysis and ICP analysis are carried out. The results show that the (Ba, Cr, Si, Ca) oxides and (Mn, Si, Cr, Al) oxides are corroded more easily than (Cr, Mn, Al, Ti) oxides, and the equivalent diameter of the former is greater than that of the latter. The pits of dissolved inclusions act as the initial locations of pitting corrosion in the chlorine ions corrosion environment, which accelerates the corrosion of matrix. The proportion of matrix corrosion is higher than inclusions corrosion in the weight loss. In order to elucidate the effects of inclusions on the resistance to pitting corrosion of S32205 duplex stainless steel, a potentiodynamic anodic polarization test, a weight loss test, a SEM-EDS analysis, an in situ analysis, and ICP analysis are carried out. The results show that the (Ba, Cr, Si, Ca) oxides and (Mn, Si, Cr, Al) oxides are corroded more easily than (Cr, Mn, Al, Ti) oxides.

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weight loss in situ analysis si cr al oxides cr si ca oxides chlorine ions corrosion mn al ti oxides dissolved inclusions anodic polarization pits

Xiaojun Hu,Jianchao Zheng, Shaopeng Fu, Ping Lin, Chao Pan, Kuochih Chou,.Effects of inclusions on the resistance to pitting corrosion of S32205 duplex stainless steel. 69 (2),.

Xiaojun Hu, et al."Effects of inclusions on the resistance to pitting corrosion of S32205 duplex stainless steel" 69

Xiaojun Hu,Jianchao Zheng, Shaopeng Fu, Ping Lin, Chao Pan, Kuochih Chou,"Effects of inclusions on the resistance to pitting corrosion of S32205 duplex stainless steel"