不銹鋼製硫黄製錬釜内壁に生成する硫化物スケールに関する研究

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タイトル別名
  • On the Sulfide Scale Growing upon the Inside Wall of Stainless-Steel Pots for Sulfur-Smelting
  • フシュウコウセイ イオウ セイレンガマ ナイヘキ ニ セイセイ スル リュウカブツ スケール ニ カンスル ケンキュウ

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We investigated the sulfide scale formed upon the inside wall of stainless-steel (about 12%Cr) pots for sulfur-smelting. With th same microscopic and other analytical methods as in the previous report on that of cast-iron, we obtained the following results: (1) The scale is mainly of pyrrhotite, but in the inner layer there is a different compound, named Daubreelite, which is FeCr2S4 and has a spinel-type structure, and the good property against the sulfurisation of stainless steel appears to be come due to this compound. In such a case, Si contained is suppressed into the inner part of scale by this compound, otherwise it will diffuse all over the scale as seen in that of cast-iron. (2) The periodical distribution of alloyed elements (C, Cr and Si) alike that of Fe and S is similar to that of cast-iron. However, this appearance can not be attributed to the condition of practical use, but to flawing in the scale at the optimum thickness, as proposed by Gel’d et al.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (4), 229-233, 1960

    公益社団法人 日本金属学会

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