Hydrogen Ingress in High-Strength Alloys Exposed to Different Electrolytes

摘要: Abstract A diffusion/trapping model for hydrogen ingress was applied to three high-strength alloys, 4340 (UNS G43400) steel, Monel K-500 N05500), and MP35N R30035), in electrolytes ranging pH from 2.9 9.0. Hydrogen found occur under interface control, although some cases, the data were affected by corrosion or a change surface film on alloy. The apparent rate constants trapping (ka self-consistent steel an acetate buffer, but anomalies observed with other due significant metal dissolution formation. In contrast, control applicable alloy various electrolytes. value of ka independent electrolyte, indicating that adequately represents this over range test conditions. can be fitted also different electrolytes, determined each c...