高張力鋼の硫化物応力腐食割れの研究 (第2報)
硫化水素水中での鋼の電気化学的挙動
1967 年 16 巻 2 号 p. 57-61
詳細
1967 年 16 巻 2 号 p. 57-61
A study was made on the electrochemical characteristics of nickel-containing and nickel-free high strength steels in hydrogen sulfide aqueous solution. It was demonstrated that the overpotential of cathodic reaction of each of the steels examined is decreased by the addition of hydrogen sulfide and the overpotential gradually decreases with the lapse of immersion time. These phenomena are quite pronounced when nickel is embraced in the steel. It is indicated that the change in overpotential depends upon the corrosion products, described in the preceding report, formed on the surfaces of these steels. The degree of decrease in the cathodic overpotential appears to have a close relationship with the susceptibility of sulfide corrosion-cracking of high strength steel.
