Scanning electron microscopy observation on the incubation period of vibratory cavitation erosion

S. M. Ahmed, K. Hokkirigawa, Y. Ito, R. Oba

研究成果: Article

37 引用 (Scopus)

抜粋

The behaviour of the vibratory cavitation erosion on typical machinery material, SUS 304 stainless steel, is investigated using a scanning electron microscope and a profilometer. The tests are carried out under conditions of uniform cavitation nuclei size distribution. It is observed that the polishing Unes act as weak points for the formation of pits. The diameter and the shape of these pits do not change with the test time (t < 20 min). The rate of formation of pits with test time is high initially but decreases after t = 15 min. It is also observed that most of the test surface is locally deformed plastically from the beginning of the vibration, resulting in characteristically wavy surface undulations. As the time passes, these undulations do not change in shape and number but they do change in width as well as in height. In addition, the direction of undulation greatly affects the roughness on the eroded surface.

元の言語English
ページ(範囲)303-314
ページ数12
ジャーナルWEAR
142
発行部数2
DOI
出版物ステータスPublished - 1991 3 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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