The role of chloride ion on the atmospheric corrosion of steel and corrosion resistance of Sn-bearing steel

Autor: Kazuyuki Kashima, Hideaki Miyuki, Takayuki Kamimura, Takeo Kudo, K. Sugae
Rok vydání: 2012
Předmět:
Zdroj: Corrosion Science. 62:34-41
ISSN: 0010-938X
DOI: 10.1016/j.corsci.2012.04.049
Popis: In order to clarify the role of chloride ion on the atmospheric corrosion of steels, the minute anode chamber simulating local anode sites on steels was set up, and the pH change was measured. The pH was affected by the chloride concentration, and decreased to 1.5 with the formation of β-FeOOH. The role of chloride ion on the corrosion is discussed from the viewpoint of solubility and hydrolysis of Fe3+-species. An atmospheric corrosion model under high chloride content environments is proposed. Based on the model, it was found that Sn-bearing steel exhibits the superior atmospheric corrosion resistance.
Databáze: OpenAIRE