数種の不銹鋼の高温酸化

山科 俊郎

doi:10.3323/jcorr1954.12.7_320

数種の不銹鋼の高温酸化

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山科俊郎

金属材料技術研究所

書誌事項

タイトル別名

High Temperature Oxidation of Stainless Steels
スウシュノフシュウコウノコウオンサンカ

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説明

High temperature oxidation of four kinds of stainless steels at 1, 100°C in air was studied by using a gravimetric technique, X-ray diffraction and chemical analysis.<br>Gravimetric study showed that the oxidation rate of 310 steel (25% Cr, 20% Ni) was much lower than those of the other samples (17-18% Cr, 8-15% Ni). Differences in the oxide structure and chemical composition between the adhered scale and the exfoliated scale which occurred by quenching from 1, 100°C, were examined by means of X-ray diffraction and chemical analysis. It was found that the spinel type oxide was rich in the adhered scale, but α-Fe₂O₃ was rich in the exfoliated scale.<br>Discussion was made on the layer structure of the scale with the mechanism of heat resistance of stainless steels, using the oxidation potential diagrams.