軟鋼の燒入による耐蝕性の改善

抄録

Quenching of low carbon steels such as mild or dead soft steel, have hardly been applied in industry. But the author found that atmospheric corrosion of these materials were improved with rapid cooling from austenitic range as the high temperature.
The results of the investigation are summarized as follows: (1) The corrosion resisting property appears only on the surface or in its neighbourhood of specimen. (2) The improved property is only recognized under the atmospheric corrosion tests. (3) In industrial application, the carbon content of materials should be less than 0.15%, unless the quenching treatment will injure mechanical properties. (4) It is concluded that this phenomenon is caused by dissolving forcedly impurities or alloying elements into ferrite.