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Sulfide Stress Cracking (SSC) of API-X100 high strength low alloy steel was evaluated in NACE solution “A” at room temperature. The corrosion rate, utilizing electrochemical polarization techniques, in the solution was 97mpy. Proof ring testing, per NACE TM-0177, generated an SSC threshold stress value of 46% of yield strength. SSC susceptibility was caused by the high corrosion rate which formed...
The potentiodynamic polarization behavior of copper alloys in chloride solutions (1M NaCl) of different pH’s (6.5 and 10) was investigated. Three commercial alloys of nominal composition Cu–30Ni (Cu–Ni), Cu–30Zn (Cu–Zn) and 90Cu–8Al–2Fe (Cu–Al) were considered. Results at pH of 6.5 showed no evidence of passivity with polarization behavior being dominated by the Cu component. At pH of 10, however,...
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