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Inhibition effect and mechanism of tin on the active dissolution of tin-containing 430LX ferritic stainless steel
Corrosion Science ( IF 7.4 ) Pub Date : 2021-09-06 , DOI: 10.1016/j.corsci.2021.109818
Kangkang Zheng 1 , Peize Cheng 1 , Longlin Lei 1 , Xiangyu Wang 1 , Pei He 1 , Yangting Sun 1 , Jin Li 1 , Yiming Jiang 1
Affiliation  

Alloying trace Sn in 430LX ferrite stainless steel (FSS) can effectively inhibit the active dissolution kinetics in H2SO4 solution, which is proved by potentiodynamic and potentiostatic polarization. To clarify the mechanism of Sn and unravel the complicated polarization curves, solution simulation experiments for 0 Sn specimen were designed and Sn2+ dynamic addition tests were conducted. Results indicate that the inhibition effect of Sn is not only related to Sn2+ concentration but also affected by the polarization potential. Based on under-potential deposition, the inhibition mechanism of Sn can be well explained and the corrosion process of tin-containing FSS is clearly described.



中文翻译:

锡对含锡430LX铁素体不锈钢主动溶解的抑制作用及机理

在 430LX 铁素体不锈钢 (FSS) 中合金化痕量 Sn 可以有效抑制 H 2 SO 4溶液中的主动溶解动力学,动电位和恒电位极化证明了这一点。为阐明Sn的作用机理,解开复杂的极化曲线,设计了0 Sn试样的溶液模拟实验,并进行了Sn 2+动态添加试验。结果表明,Sn的抑制作用不仅与Sn 2+浓度有关,而且还受极化电位的影响。基于欠电位沉积,可以很好地解释Sn的抑制机制,并清楚地描述含锡FSS的腐蚀过程。

更新日期:2021-09-22
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