Zr-Te合金の酸化機構について

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書誌事項

タイトル別名
  • On the Oxidation Mechanism of Zr-Te Alloys (Studies on the Oxidation of Zirconium and its Alloys, 2nd Report)
  • Zr-Te ゴウキン ノ サンカ キコウ ニ ツイテ

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抄録

The beneficial effect of tellurium as an added element on the oxidation resistance of zirconium has been reported in our previous papers, where it was stated that the addition of tellurium would decrease the concentration and the mobility of oxygen ion vacancies. In the present papers, experiments by oxidation test was carried out to determine whether the vacancy concentration or the mobility is mainly affected by the presence of tellurium in the oxide. The results obtained are as follows. Tellurium addition was not so effectual at high temperatures as at rather low temperatures, but the amount of tellurium addition which resulted in the longest breakaway time (i.e. the lowest oxidation amount) was scarcely changed by the oxidation temperature and nitrogen content which was said to increase the concentration of oxygen ion vacancv. From these results a conclusion is deduced, that is, a tellurium ion in zirconium oxide does not contribute to the decrease in the vacancy concentration, but mainly to the decrease in the mobility of vacancy by taking the state of positive quadruvalency.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (9), 604-607, 1960

    公益社団法人 日本金属学会

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