腐蝕に現れたる變形と熱處理との關係に就て
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概要
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With Deformation and with or without Heat-treatment. Studied the resistance of the corrosion of Stainless Steel ; with deformed and before or after the deformation annealed at 675℃ in one hour, by dilute acid and solt Solutions as fallowes : 1% HCl, 1% H_2SO_3, 1% HNO, 1% CH_3COOH, 1% NH_4OH, 1% NH_4Cl, 2 or 3% NaCl, & 1 or 5% NaOH. The investigation is observed wite three kinds of specimens and under the constant conditions, namely. They are (A) Specimens without heat-treatment before and after its deformation, (B) Specimens with heat-treatment after its deformation, (C) Specimens with heat-treatment before its deformation : and these are at the room temperature free from the Sun-chines and at the still state with no agitation. From the author's experiments derived such conclusions in general as ; (1) Clearing the effects of the heat-treatment upon the resistance of corrosion. (2) The resistance of corrosion will be mostly improved by the proper heat-treatment after the deformation, next before it, and it is observed least resistance when with no heat-heatment. (3) The parts with free flows of Crystalline grains by deformations will be most corroded in other words heterogeneous arrongement of crystalline grains will vigorous corroded (4) Stainless steel with higher chrmium hos little resistance for the corrosion in a solution with chlorine ion. (5) The film of passivity which grows in the solution minimire the corrosion. Many thanks to Emeritus Proffessor Dr. Tawara and Assistant Professor Tanaka of Tokyo Imperial University.
- 社団法人日本鉄鋼協会の論文
- 1933-02-25