0.06%C鋼面上のW-Coメッキ層およびその浸炭層の酸化について

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タイトル別名
  • On the Oxidation of W-Co Layer Electrodeposited on 0.06%C Steel and its Carburized Surface
  • 0.06 C コウメン ジョウ ノ W-Co メッキソウ オヨビ ソノ シンタンソウ ノ サンカ ニ ツイテ

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Making more detailed investigation of the results of our previous study on the hardening of W-Co layer electrodeposited on 0.06%C steel caused by carburizing in cracked town gas, it was found that the maximum value of 1350 Hv was obtained with heating at 1050∼1100°C for about 3 hours, and that the formation rate of tungsten carbide became more rapid at higher temperature beyond about 1000°C. An oxidizing process was observed on the surface of W-Co deposit and its carburized surface by heating in air at the range of 100∼1100°C for 1 hour; the weight increase was measured and the structure of the oxidized film was examined by X-ray and electron-diffraction methods. The results obtained were as follows: (1) Hardly any oxide film was formed on either surface by heating below 300°C. (2) The surface layers of the oxide film formed at the temperature over 400°C consisted of Co3O4 in both the W-Co deposit and the carburized surface. (3) In the inner parts of oxide films formed at above 900°C, W-Co double oxide (CoWO4) was detected in W-Co deposit, while only CoO was found on the carburized surface.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (7), 421-424, 1960

    公益社団法人 日本金属学会

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