ラマン散乱分光法による SUS304L 酸化皮膜の解析

概要

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Raman spectroscopy was applied to the characterization of the thin oxide layers produced on SUS304L stainless steel in Ar gases of several purities at 1273K and it was revealed that measurement of the incident angle dependency of Raman spectra from oxide layers makes it possible to identify the outer and inner regions of the two oxide layers on SUS304L. The oxide layer, produced in high purity Ar gas at 1273K-120s, consisted of MnCr_2O_4 spinel type oxide. The oxide layer produced in 99.5%Ar+0.5%O_2 gas showed a double-layer structure, and the outer and the inner were identified with FeCr_2O_4 and Cr_2O_3 respectively. The frequency shift of Raman spectra from the powder standards has been shown to be induced by the compressive stress in the oxide layers on stainless steel, and the amount of compressive stresses was estimated.
社団法人日本鉄鋼協会の論文
1993-01-01