Micro determination of carbon in nonmetallic compounds of iron and steel

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  • KAMADA Hitoshi
    Institute of Technoanalytical Chemistry, Faculty of Engineering, University of Tokyo
  • TODA Shozo
    Institute of Technoanalytical Chemistry, Faculty of Engineering, University of Tokyo
  • NISHIYA Takao
    Institute of Technoanalytical Chemistry, Faculty of Engineering, University of Tokyo

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Other Title
  • 鉄鋼の非金属化合物中の微量炭素の定量方法の研究
  • テッコウ ノ ヒキンゾク カゴウブツ チュウ ノ ビリョウ タンソ ノ テイリョウ ホウホウ ノ ケンキュウ
  • 鋼中に含有される非金属化合物の分析化学的研究(第1報)

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Abstract

Analysis of nonmetallic compounds in iron and steel has become more important with the increase in demand of products of higher quality. In general, the content of nonmetallic compounds in iron and steel is small, and the amount of sample to be used for carbon analysis is limited to only several mg, as the same sample is required for various analysis. For this reason, the gravimetric method by combustion is unavilable. Therefore, an attempt has been made by the author to collect carbon dioxide produced from combustion by cooling with liquid oxygen, a part of which is taken in a gas meter and its quantitative determination carried out by mass analysis, using argon as an internal standard. Blank tests showed values equivalent to about 10γ of carbon, and the errors were 2-3% in samples containing 0.1mg carbon. Also, analysis of carbon in a pure iron containing about 0.01% carbon can easily be made by using a 1g sample.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 6 (3), 146-150, 1957

    The Japan Society for Analytical Chemistry

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