室温におけるステンレス鋼の大気腐食割れに及ぼす湿度および塩化物の種類の影響

DOI Web Site Web Site
  • 庄司 三郎
    株式会社日立製作所日立研究所 現在: 日立ニュークリアエンジニアリング株式会社研究開発部
  • 大中 紀之
    株式会社日立製作所日立研究所

書誌事項

タイトル別名
  • Effects of Relative Humidity and Kinds of Chlorides on Atmospheric Stress Corrosion Cracking of Stainless Steels at Room Temperature
  • シツオン ニ オケル ステンレス コウ ノ タイキ フショク ワレ ニ オヨボ

この論文をさがす

抄録

In order to evaluate the effects of relative humidity (RH) at room temperature and kinds of chlorides on atmospheric stress corrosion cracking (SCC) of SUS 304 and 316L stainless steels in contact with chlorides, SCC tests were carried out in RH controlled environments by using U-bend specimens deposit of 0.5N chloride solutions (NaCl, MgCl2, CaCl2, ZnCl2, LiCl) or synthetic sea water. The maximum SCC susceptibility of steels was observed at the inherent relative humidity (RHmax) for each chloride. The SCC susceptibility in contact with synthetic sea water was governed by MgCl2 which is a minor solute component of sea water. Even with a long time test period of 24 months, atmospheric SCC was observed in a very limited RH range around RHmax. From measurements of the maximum crack length (Lmean) at RHmax of the different chloride solutions, it was concluded that a higher saturated concentration of chloride gave a higher SCC susceptibility. However, the acidic chloride, ZnCl2, gave a smaller Lmean than that overall tendency obtained without ZnCl2.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ