マンガン-亜鉛フェライト中の遊離酸化亜鉛の定量

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タイトル別名
  • Determination of Free Zinc Oxide in Manganese-Zinc Ferrite (Determination of Free Oxide in Ferrite, Part I)
  • マンガン-アエン フェライト チュウ ノ ユウリ サンカ アエン ノ テイリョウ

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抄録

Manganese-zinc ferrite is produced by firing of mixed oxides. If it is possible to determine the amount of free zinc oxide present in fired products, very useful informations would be obtained for the elucidation of the reaction mechanism. No detailed study on the determination of free zinc oxide in manganese zinc ferrite has been done in the past. In the present work, selection of extracting agent, extracting condition of free zinc oxide, and rapid volumetric determination of zinc in the extract with disodium ethylenediamine tetraacetate were carried out, with the following findings: (1) For extraction of free zinc oxide in ferrite, ammonium acetate solution is suitable. (2) Zinc in the extract containing a large amount of ammonium acetate can be determined by the EDTA titration method. (3) In the process of extraction by ammonium acetate solution, if oxides of manganese, copper, nickel, etc. co-exist, they dissolve partially and interfere with titration. (4) Iron oxide and spinel phase are not extracted by ammonium acetate solution. (5) When the sample of ferrite is ground finely (0.2 to 1 μ) in an agate mortar, the effect of grain size can be minimized.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 26 (3), 182-186, 1962

    公益社団法人 日本金属学会

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