鑄鐵と硫黄系ガスとの反應（第1報）

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書誌事項

タイトル別名
  • Reaction between Cast Iron and Gases Combining with Sulphur (1st Rept.)
  • 鋳鉄と硫黄系ガスとの反応-1-
  • チュウテツ ト イオウケイ ガス ト ノ ハンノウ 1
  • —Corrosion of a cast iron pot in smelting sulphur —
  • —硫黄製鍊におけるポット内ガスに因る鑄鐵の腐蝕—

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抄録

  To obtain an accurate knowledge on the corrosion reaction of a cast iron pot in smelting sulphur, the composition change of a gas in the pot and the structure and composition of scale of the pot were firstly investigated. </br>  The corrosion of the pot progressed in three stages. The first was the oxidizing and sulphidizing period in which H2O, H2S and SO2 acted a main role to dry corrosion of the cast iron pot, the second the sulphidizing period in which the corrosion of the pet was mainly progressed by sulphur vapor, and the third the oxidizing period in which the corrosion by oxygen gas was remarkable. </br>  Scale was divided into three main layers, that is, the outer, middle and inner layers. Although these layers were different in the structure and the composition, every one mainly consisted of FeS and a little iron oxide, and the sulphur contents of them were a few percentage lower than that of pure FeS. From this fact, it was more cleared that the corrosion of the pot progressed in the complexity of the oxidation and the sulphuration. </br>  Nextly, the corrosion resistance of Al-Cr and Al-Mo alloy cast irons for the gas in the pot was investigated. These alloy cast irons showed twice or thrice the corrosion resistance of plain cast iron in pure sulphur vapor, while, in the pot gas, these alloy irons did not show such an excellent corrosion resistance. Consequently, it is presumed that the complexity of the oxidation and the sulphuration may destroy the scale layer of alloying elements and accelerate the corrosion.

収録刊行物

  • 鋳物

    鋳物 26 (3), 127-132, 1954

    公益社団法人 日本鋳造工学会

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