誘導結合プラズマ発光分析法によるファインセラミック焼結体中不純物の定量

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タイトル別名
  • Determination of impurities in sintered fine ceramics by ICP-AES.
  • ユウドウ ケツゴウ プラズマ ハッコウ ブンセキホウ ニ ヨル ファインセラミ

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A few decomposition methods were examined in order to determine impurities in sintered alumina, zirconia and alumina/zirconia composite samples. Pulverized samples were severely contaminated by a grinding vessel. A lump (about 0.3 g) of sintered alumina or zirconia sample was decomposed with 10 ml of sulfric acid (1 + 2) in a Teflon pressure vessel at 230°C for 1660 h ;however, all sintered alumina/zirconia composite samples were not decomposed with sulfric acid (1 + 2). A lump (about 0.3 g) of the sintered composite sample was decomposed with a mixture of 0.3 ml of hydrofluoric acid and 9.7 ml of sulfric acid (1 + 2) at 230°C for 24 h. It was necessary to match the matrix components (acids, aluminum and zirconium) in standard solutions to those in sample solutions. The proposed methods were applied to several commercial samples, and the impurities and additives were determined by ICP-AES. The detection limits of most elements were below several μg/g. The decomposition methods for sintered silicon carbide, silicon nitride, aluminum nitride, boron nitride, zinc oxide, barium titanate, lead zirconate titanate and sialon were also described.

収録刊行物

  • 分析化学

    分析化学 47 (11), 783-793, 1998

    公益社団法人 日本分析化学会

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