Effects of Colloidal Silica Addition on the Self-healing Function of Chromate Coatings

スポンサーリンク

概要

• 論文の詳細を見る

• The corrosion prevention mechanism of the chromated metal materials is considered to be attributable to the self-healing function of the chromate coatings. In this study, the corrosion behaviors of dry-in-place type chromate coated galvanized steel specimens have been studied using a scanning vibrating electrode technique. By this method, the effects of colloidal silica addition in the chromate coating on the self-healing function have been examined. The results confirmed that the chromate coatings prevent the corrosion of metal under coating or at coating defects by their self-healing function. The self-healing function of the chromate coatings is due largely to the formation of a Cr compound layer from the dissolved Cr(VI) ions in the electrolyte. The addition of colloidal silica greatly enhances the self-healing function and corrosion protection of the dry-in-place type chromate coating.

• 社団法人 日本鉄鋼協会の論文
• 2002-05-15

著者

• Shinohara Tadashi

  Department Research Laboratories Nihon Parkerizing Co. Ltd.

• SUDA Arata

  Central Research Laboratories, Nihon Parkerizing Co., Ltd.

• Suda Arata

  Central Research Laboratories Nihon Parkerizing Co. Ltd.

• Shinohara Tadashi

  Department of metallurgy, School of Engineering, The University of Tokyo

関連論文

• Photoeffect of Corrosion Behavior of SrTiO_3-Coated Galvanized Steel
• Sol-Gel Derived Ti-Fe Oxide Coating for Photoelectrochemical Cathodic Protection of Carbon Steel
• Effects of Interfacial Iron Oxides on Corrosion Protection of Carbon Steel by TiO_2 Coating under Illumination
• Effects of Colloidal Silica Addition on the Self-healing Function of Chromate Coatings
• Protection of Carbon Steel from Atmospheric Corrosion by TiO_2 Coating

スポンサーリンク