ティンフリースチール表面の色調異常について(ぶりき・ティンフリースチール)(<特集>鋼材の表面処理)

概要

論文の詳細を見る
It has been shown by the electron microscope that the unusual surface color which occurs sometimes on the TFS is caused by small projections of deposited metallic chromium. As the upper layer of the cathode film of the chromium plating is easily soluble into the electrolyte, small local defects of the cathode film are produced by dissolution when the steel strip runs from one plating cell to the following cell, because plating current is not applied between the plating cells. The metallic chromium deposition in the next plating cell occurs preferentially at the site of the local defects and forms the projections there. This theory agrees well with authors study on the cathode film that the metallic chromium deposits not from the cathode film but chromium complexes by penetrating the cathode film and reaching strip surface. Low current density pretreatment in each plating cell is effective for the prevention of the unusual color on the surface.
社団法人日本鉄鋼協会の論文
1980-06-01