Sulphuric acid corrosion of ultrafine-grained mild steel processed by equal-channel angular pressing
Source abstract
Abstract
Abstract A bulk ultrafine-grained (UFG) mild steel with a ferrite grain size of approximately 200 nm and a dispersed distribution of iron carbide particles was fabricated by equal-channel angular pressing (ECAP) at 400 °C. The corrosion behaviour of the ECAP-processed mild steel and pure iron was investigated in a 0.5 mol/L H2SO4 solution. They exhibited a higher corrosion rate and better anodic passivity properties due to the presence of more crystalline defects. As a result of the refinement of the iron carbide particles, the forming ability of a continuous dense passive film was improved.
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Research context
OpenAlex topics: Microstructure and mechanical properties · Metal and Thin Film Mechanics · Advanced materials and composites
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