Abstract

We analyze basic types of corrosion, corrosion-hydrogen, and corrosion-mechanical fractures of steels in hydrogen sulfide-containing media. We propose a new concept based on the chemical interaction of atomic hydrogen with thermodynamically unstable inclusions and carbides of steel, which results in the formation of microvoids on “metal–inclusion” boundaries. This is the main reason for hydrogen sulfide corrosion cracking and hydrogen-induced cracking of steels.

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