Effect of nanograin-boundary networks generation on corrosion of carburized martensitic stainless steel.

ABSTRACT: Martensitic stainless steel parts used in carbonaceous atmosphere at high temperature are subject to corrosion which results in a large amount of lost energy and high repair and maintenance costs. This work therefore proposes a model for surface development and corrosion mechanism as a solution to reduce corrosion costs. The morphology, phase, and corrosion behavior of steel are investigated using GIXRD, XANES, and EIS. The results show formation of nanograin-boundary networks in the protective layer of martensitic stainless steel. This Cr₂O₃-Cr₇C₃ nanograin mixture on the FeCr₂O₄ layer causes ion transport which is the main reason for the corrosion reaction during carburizing of the steel. The results reveal the rate determ

SUBMITTER: Boonruang C 

PROVIDER: S-EPMC5797200 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature