金属研摩薄片と X 線マイクロアナライザーによる鋼中非金属介在物の同定

概要

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For the research of fine minerals in rocks, a "polished thin section" began to be used as a new method. In this paper this technique was applied to metals containing non metallic inclusions. The metal sample was stuck to a slide glass, polished with emery paper to 7∿8 microns in thickness, and scratches on the surface of the inclusions were removed by polishing on cloth with alumina abrasive suspended in oil. Under a petrographic microscope the reflected and transmitted color, transparency, crystal shape, extinction and retardation of the non-metallic inclusions in the thin section were observed. From the optical properties the minerals in the inclusions were identified fairly well. Then, each of minerals was analysed with X-ray microanalyser. When the thin section was 7∿8 microns in thickness, it was confirmed that the slide glass had no influence upon the X-ray microanalysis. By this method coarse non-metallic inclusions in the cold-rolled strips of rimmed steel made in open-hearth furnace were examined. By considering both the optical properties and the result of X-ray microanalysis of the inclusions, the minerals in the inclusions were identified without difficulty and the state of coexistence of minerals was clarified in detail.
社団法人日本鉄鋼協会の論文
1965-06-01