Ming Liu , Lining Xu , Lijie Qiao , Yu Yan , Binglu Zhang , Xuehan Wang
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Coupling effect of precipitates and hydrogen on pitting corrosion of stainless steel: Low potential region around precipitates
The coupling effect of hydrogen and NbCrN precipitate on pitting initiation and propagation of stainless steel were studied. After hydrogen charging, HMT results showed that more hydrogen was enriched on and around the precipitates. According to In-situ SKPFM and immersion results, the Volta potential of the precipitates is higher than that of the matrix before and after hydrogen charging. However, after hydrogen charging, a low Volta potential region appeared around the precipitates. The enrichment of hydrogen around the precipitates, the low potential around the precipitates, and consequent galvanic coupling effect lead to pits preferentially initiating and developing around the precipitates.
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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