二次イオン質量分析法による鋼中チタン析出物の定量に関する基礎的検討(析出物分析)(<特集>分析評価・解析)

概要

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Analytical conditions were examined for the determination of titanium precipitates in steel as titanium carbide and titanium nitride by secondary ion mass spectroscopy. Characteristic polyatomic ions related to the compounds were sought by comparison of the intensity of polyatomic ions for various samples. The intensity of polyatomic ions were calculated by fitting the SIMS spectra to the relative isotopic abundance of each ion using non linear least square method. The polyatomic ions TiC^+ and Ti_2C^+ were selected for the characteristic ions of titanium carbide and TiN^+ and Ti_2N^+ for titanium nitride because of higher intensity and good reproducibility. The compressed disks of mixed powder of iron, titanium carbide and titanium nitride, with a few μm diameter, enble the determination of titanium carbide and nitride to less than 1 wt%.
社団法人日本鉄鋼協会の論文
1991-11-01