塩化ナトリウム水溶液中に浸せきしたアルミニウム1100に発生する食孔内の塩化物イオン濃度の推定
2001 年 65 巻 9 号 p. 880-887
詳細
2001 年 65 巻 9 号 p. 880-887
The electrochemical experiments and metallurgical observations have been made to estimate the chloride ion concentration in the pitting cavity on the aluminum 1100 specimens which are corroded in 0.1 kmol/m3 NaCl solution for 3.9 Ms. The estimation is based on the experimental fact that the corrosion potential (open-circuit potential) of the 1100 specimens coincided with the pitting potential for all period of immersion. It is indicated that the value of the chloride ion concentration in pitting cavity is equivalent to that of 0.46∼0.61 kmol/m3 AlCl3 solution as a substitutive solution of the pit solution.
