ガス抽出法の相違によるニッケル，鉄のガス分析結果の相違

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タイトル別名
  • Differences between Analytical Results of Gases in Nickel or Iron due to Those between Gas Extraction Techniques. (Studies on Vacuum Induction-Melting of Iron and Nickel. I)
  • ガス チュウシュツホウ ノ ソウイ ニ ヨル ニッケル , テツ ノ ガス ブンセキ ケッカ ノ ソウイ

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抄録

Various gas extraction techniques have been tested to obtain a suitable one for micro-analyses of hydrogen, oxygen or nitrogen in nickel or iron, by employing a vacuum-fusion gas-extraction apparatus constructed by the author’s plan. In this apparatus, the gas evolution rate from either solid or liquid state is easily observed and the sensitivity of measurement of gas amount is usually 0.5 micron-liter. These tests show that (1) solid diffusion extraction at 850°C gives larger results than that due to either the 1200°C tin-fusion or the 1600°C single-fusion extraction technique, for micro-analysis of hydrogen in both nickel and iron, (2) perfect extraction of nitrogen out of iron samples is so difficult even when the extraction temperature is elevated to 1800°C, that the vacuum-fusion gas extraction at 1800°C for 20 min give 42 ppm of nitrogen while the Kjeldahl method gives 64 ppm for the samples from a same experimental iron ingot.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 25 (10), 635-639, 1961

    公益社団法人 日本金属学会

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