| Co-Investigator(Kenkyū-buntansha) |
毛 志〓 浙江大学, 材料化学工程系, 教授
梅 祖彦 清華大学, 水利工程系, 教授
陳 南平 清華大学, 材料研究所, 所長
HIGUCHI H. Associate Professor, St. Anthony Falls Hydraulic Lab., University of Minnesota, 航空力学科, 助教授
SONG C. C. S. Professor, St. Anthony Falls Hydraulic Lab., University of Minnesota, 水力研究所, 教授
ARNDT R. E. A. Director, St. Anthony Falls Hydraulic Lab., University of Minnesota, 水力研究所, 所長
OYAMA Makoto Director, Suzuki Ltd., Research Institute, 技術研究所, 所長
SATO Jyoushiro Chief Engineer, Hitachi Work, Hitachi Ltd., 日立工場, 副技師長
OSHIMA Ryouichiro Professor, Faculty of Engineering, Tohoku Gakuin University, 工学部, 教授
MATSUDAIRA Yasuaki Professor, Tokyo Metropolitan Institute of Technology, 教授
ITO Yukio Associate Professor, Institute of Fluid Science, Tohoku University, 流体科学研究所, 助教授 (70006196)
IKOHAGI Toshiaki Associate Professor, Faculty of Engineering, Tohoku University, 機械工学科, 助教授 (90091652)
KATO Kouji Professor, Faculty of Engineering, Tohoku University, 機械工学科, 教授 (50005443)
CHEN Nan-ping Director, Institute of Material Science, Tsinghua University
MAO Zhi-yuan Professor, Department of Material Chemistry, Zhe-jiang University
MEI Zu-yan Professor, Department of Hydraulic Machinery, Tsinghua University
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| Budget Amount *help |
¥4,800,000 (Direct Cost: ¥4,800,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1989: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1988: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Research Abstract |
The compound erosion, the coupling of abrasive wear and cavitation erosion, on affects the destruction of materials in many subtle ways. In this project, our studies are focused on the severe action of the erosion and the wear on accelerated cavitation, flow cavitation and impingement jet cavitation, which are significantly affected by various material properties and liquid qualities, and also are focused to clarify the mechanism of the compound erosion on metal surfaces, where unsteady vortex cavitation predominantly takes place in high-speed multiphase flows in turbomachinery. From these studies, we find the useful methods of preventing or overcoming such compound erosion, by using resistant materials and protective coatings. In order to make clear the development processes with test time and to evaluate the results, the surface deformation and the micro-scaled fracture on the eroded surface with respect to the cavitation aspects, through a scanning electron microscope as well as a highーspeed camera.
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