流水中の砂による金属のエロージョンについて

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書誌事項

タイトル別名
  • Erosion of Metals by Sand in Running Water
  • リュウスイ チュウ ノ スナ ニ ヨル キンゾク ノ エロージョン ニ ツイテ

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抄録

In order to decrease the damage of water turbines or water pumps caused by sand erosion, three different types of sand erosion tyests were carried out; (a) Erosion caused by collision with sand. (b) Erossion caused by friction of running sand. (c) Erosion caused by friction due to the rotation of metals in sand. In the case (a), the results show that the erosion loss is nearly proportional to the cube of relative velocity and also proportional to the size of sand. In the range of relatively small amount of sand, a linear relation between the amount of sand and the erosion loss was observed. Erosion loss is nearly in inverse proportion to the hardness of metal. It has been also found that copper alloys are less strong than ferrous alloys in the case of same hardness. In the case (b), the erosion loss is nearly proportional to the relative velocity. The relation between the hardness of metals and the erosion loss is similar to the case of (a). A complicated relation between the loss and the hardness was observed in the case (c). In this case, the metal particles produced during the experiment should serve as erosive materials. The results indicate that the erosion loss increases with increasing hardness in the range of lower hardness, but decreases with increasing hardness, in the range of higher hardness.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 26 (9), 580-584, 1962

    公益社団法人 日本金属学会

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