A Numerical Study on Gas Phase Dynamics of High-Velocity Oxygen Fuel Thermal Spray

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概要

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• The high-velocity oxygen fuel (HVOF) thermal spray is used for a particulate deposition process in which micro-sized particles are propelled and heated in a supersonic combusting gas stream. It is characterized by high gas velocity and high density and is being used in an increasing variety of coating applications, such as ceramic and composite coatings, to improve wear and abrasion resistance. The particle temperature and velocity are two of the most important parameters in HVOF thermal spraying, which affect the quality of the coatings. To understand the particle dynamics, it is necessary to study, first, the thermal flow characteristics in the HVOF system. In this study, a numerical analysis is performed to predict the gas dynamic behaviors, and the effect of the geometrical parameter is studied to optimize the nozzle design.

• 2008-08-25

著者

• Kim Youn-jea

  School Of Mechanical Engineering Sungkyunkwan University

• Kim Youn-Jea

  School of Mechanical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon 440-746, Korea

• Park Sun-Kyu

  Department of Civil and Environmental Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon 440-746, Korea

• Baik Jae-Sang

  School of Mechanical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Suwon 440-746, Korea

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