Effect of Al and Si addition on passivation of stainless steels in H2SO4 solution
Source abstract
Abstract
The dissolved masses of Fe, Cr, Al, and Si in H 2SO 4 solution during the polarization of Cr-containing steels were quantified by online ICP-OES. The active dissolution current on 11Cr-2Al/-2Si was smaller than that on 11Cr due to the enrichment of Al/Si on the steel. The Cr dissolution from 11Cr2Al was suppressed in passive state, while that from 11Cr2Si was decreased in active-passive transition because accumulated Al or Si products have different physicochemical effects on the Cr-enrichment of the surface. Roles of Al/Si in corrosion process, especially passivation, were discussed based on quantitative analysis of dissolution products detected by ICP-OES.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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