Effect of tensile deformation on corrosion behavior of nitrogen-containing stainless steel bipolar plates in a simulated environment for proton exchange membrane fuel cells
Zhuocheng Li , Jiashu Li , Wenxiang Zhu , Jingjing Jiao , Bin Wang , Yong Tian , Xu Yang , Lingxu Yang , Huijun Liu , Bingxing Wang
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Abstract
This study examined the influence of tensile deformation on the microstructure evolution and corrosion behaviors of novel nitrogen-containing austenitic stainless steel in a simulated cathode environment for proton exchange membrane fuel cells. The results indicated that at ≤ 30 % deformation, the corrosion resistance was improved with increasing deformation level. This was attributed to dislocations and subgrain refinement promoting the formation of Cr2O3 and CrN, which inhibited F- from attacking the passive film due to lower oxygen vacancy concentrations. At a deformation level of 50 %, excessive dislocations and internal stress decreased the stability of the passive film and consequently reduced the corrosion resistance.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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