苛性ソーダ溶液中での鉄,ニッケル,およびオーステナイト系ステンレス鋼の電気化学特性に及ぼすClO_3^-の影響

概要

論文の詳細を見る
Polarization measurement was conducted on iron, nickel, and austenitic stainless steels in hot caustic soda solutions containing CIO_3^- to investigate the effect of CIO_3^- on corrosion behaviors of those metals and alloys. Chlorate ions decompose into CIO^-, and this chemical reaction is stimulated by the addition of some metallic species and/or ions such as Mo (III) and Fe (II). Cathodic reduction of CIO^- to Cl^- is easy but CIO_3^- is electrochemically stable, so that cathodic reduction of CIO_3^- to CIO^- and/or Cl^- is difficult to occur directly. However, since CIO_3^- converts into CIO^- and Cl^- by consecutive reactions, CIO_3^- is detrimental to the passive film on metals and alloys in a caustic soda environment.
社団法人日本材料学会の論文
1978-04-15