Tests at 21 C (69 F) show hydrogen enters and penetrates thin Type 310 stainless steel in H2SO4 solution under applied cathodic currents, first condition for hydrogen entry contributing to hydrogen embrittlement and stress corrosion cracking. When metal surface is passive permeation rate depends on applied current density; when active, rate depends on surface corrosion currents and applied current.

Subject
Hydrogen embrittlement, Steel surfaces, Electrochemical cells, Corrosion currents, Corrosion rate, Sulfuric acid, Permeability, Cathodic current, Permeation current, Permeation, Solutions, Stainless steel, Hydrogen
© 1966 National Association of Corrosion Engineers
1966
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