| 摘要 |
PROBLEM TO BE SOLVED: To minimize the use of the neutral salt of fluoride exerting adverse influence on the human body by one or more additives remarkably improving the corrosion resistance of stainless steel by a trace amount of addition in an electrolytic polishing method to a stainless steel surface. SOLUTION: In the electrolytic polishing method, a solution obtained by adding aluminum fluoride to≥1wt% of one kind selected from the group consisting of sulfuric acid, nitric acid, phosphoric acid, citric acid, tartaric acid and malic acid, or their sodium salts, potassium salts and ammonium salts or two or more their combinations is used as an electrolytic solution and water passable nonwoven fabric is inserted between the stainless steel to be treated and an electrode, and electrolysis is performed by AC, DC or combination use of AC and DC. COPYRIGHT: (C)2005,JPO&NCIPI
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