Application of Laser Microprobe Mass Spectrometry (LAMMS) to a State Analysis of Nonmetallic Inclusions and Precipitates in a Ti-added Ultra Low Carbon Steel
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概要
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Laser microprobe mass spectrometry (LAMMS) was used in a state analysis of nonmetallic inclusions and precipitates in a high purity steel. At the same time, SEM-EDX and XPS were applied for morphological, elemental, and state analyses, respectively. As an example of a pure steel sample, Ti-added ultra low carbon steel (interstitial free steel: IF steel) was selected for the analysis. Inclusions in IF steel were prepared by an acid extraction method for oxide analysis, an electron beam melting method for in situ analysis, and non aqueous solvent selective potentiostatic electrolytic etching method for in situ analysis on the electrolyzed surface for oxide and nitride. LAMMS analysis detected Ti oxide and Zr oxide as trace elements in addition to alumina which was determined as a main component of inclusions by EDX analysis, and, it was clear that each oxide existed independently. LAMMS analysis of TiN gave only a spectrum of Ti oxide related peaks but not of Ti nitride, while Ti existed as nitride thermodynamically and analytically by XPS. Hence, in LAMMS analysis, careful interpretation of spectra is needed for such inclusions as nitride, which does not show its specific spectra.
- 社団法人 日本鉄鋼協会の論文
- 1996-12-15
著者
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Furuya Keiichi
Department Of Applied Chemistry Faculty Of Science Science University Of Tokyo
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Kikuchi Tadashi
Department Of Applied Biological Science
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SAITOH Takeru
Department of Applied Chemistry, Faculty of Science, Science University of Tokyo
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Saitoh Takeru
Department Of Applied Chemistry Faculty Of Science Science University Of Tokyo
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Kikuchi Tadashi
Department Of Materials Science And Engineering Faculty Of Science And Engineering Science Universit
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