Corrosion mechanisms of 316L stainless steel in polyphosphoric acid at elevated temperature: Behavior and mechanistic insights
Source abstract
Abstract
The performance of 316 L stainless steel in polyphosphoric acid (PPA) at high temperature, remains a subject of considerable interest. Through weight-loss tests, electrochemical analyses, SEM, XRD, XPS, and ICP, the corrosion process of 316 L in PPA and the formation of corrosion products are systematically examined. The results elucidate a multi-step corrosion mechanism involving selective dissolution of sulfur and chromium, succeeded by the involvement of additional metallic elements, notably iron, in the construction of the corrosion product layers. This study contributes to a deeper understanding of 316 L stainless steel corrosion in PPA environments, offering insights crucial for corrosion mitigation and material design.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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