走査型振動電極法による亜鉛めっき鋼板表面の塗装前処理性の評価(化成処理)(<特集>表面処理)

概要

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Using a scanning vibrating electrode technique (SVET), corrosion current distributions in a dilute sodium chloride solution were measured for chemically treated surfaces of two type of the zinc coated steel sheets (hot-dip galvanized and zinc vapor deposited steel sheets). The following results were obtained. (1) The zinc coated steel sheets with a normal dip-chromating film after painting exhibited excellent paint film adhesion and satisfactory corrosion resistance at cut edges, when anodic current was not detected by SVET over the entire surface of the zinc coated steel sheets after the suitable alkaline surface conditioning treatment and flash chromating. (2) The SVET system with a electromagnetic loud speaker unit for vibration proved useful to evaluate the chemically treated film on the zinc coated steel sheet.
社団法人日本鉄鋼協会の論文
1991-07-01