Effects of Hardness and Fracture Toughness of Target Ceramics and Abrasive Particles on Wear Rate by Abrasive Water Jet

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  • アブレイシブ・ウオーター・ジェットにおける試料と砥粒の硬さと靭性が摩耗率に及ぼす影響
  • Effects of Hardness and Fracture Toughn

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Seven kinds of ceramics, β-Si3N4, α′/β′-Sialon, TZP, SiC, three kinds of Al2O3, were worn using three kinds of abrasive particles having different hardnesses by abrasive water jet (AWJ). Wear mechanisms and wear rates of the worn ceramics depend strongly on the ratio of the hardness of abrasive particles (Hp) to that of target ceramics (Ht) as well as on the fracture toughness of target materials (Kt). Kt affects the wear mechanism and rate more strongly in AWJ than in sand erosion. The erosive wear map, which has been proposed based on the experimental results of sand erosion, was found to be qualitatively applicable to AWJ.

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