高温高圧の水および蒸気によるα黄銅の腐食におよぼす添加元素の効果について

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タイトル別名
  • On the Effect of Additional Elements on the Corrosion of α Brass in Hot Water and Steam. (Corrosion of Copper Alloys in Hot Water and Steam (4))
  • コウオン コウアツ ノ ミズ オヨビ ジョウキ ニ ヨル アルファ オウドウ ノ フショク ニ オヨボス テンカ ゲンソ ノ コウカ ニ ツイテ
  • On the Effect of Additional Elements on the Corrosion of α Brass in Hot Water and Steam. (Corrosion of Copper Alloys in Hot Water and Steam (4))

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抄録

It was reported in the previous paper that α brass of high zinc content showed layertype corrosion when exposed to hot water and steam. This paper reports the effect of additional elements on the corrosion of α brass by hot water and steam. Cu-30%Zn alloys containing small amounts of As, Sb, P, Sn, Fe, Ni, Ti or Zr as the additional element were used. The specimens were set in an autoclave. After the exposure to saturated water and steam at 300°C for 250 hours, determination of weight gain, tensile test and measurement of thickness of the corrosion layer were performed to estimate the effect of additional elements on the corrosion. The results obtained were as follows. (1) By addition of As or Sb to the alloy the rate of corrosion is greatly promoted. For example the thickness of corrosion layer of Cu-30%Zn—0.09%As alloy was more than 80 μ but that of plain Cu-30%Zn alloy was less than 40 μ. (2) Addition of P or Sn lowers the rate of corrosion. Especially, addition of P is effective to inhibit corrosion. For example, the thickness of corrosion layer on Cu-30%Zn—0.05%P alloy was less than 7 μ. (3) Addition of Fe,Ni,Ti or Zr has no appreciable effect on corrosion.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 26 (3), 174-177, 1962

    公益社団法人 日本金属学会

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