Numerical simulation of splat formation dynamics in plasma spray forming
Plasma spray forming shows overwhelming advantages in rapid fabricating parts and moulds.The coating microstructure is strongly dependent on the splat morphology and inter-splat contact nature.Therefore,it is necessary to investigate the splat formation mechanism in order to analyze the coating properties.A dynamical process of a single fully molten droplet impacting onto a smooth surface was investigated.At the same time,the interaction between the two molten droplets in the horizontal and vertical directions was also simulated.Finally,the simulations of impact of a molten droplet on an inclined plane and a sharp edge were presented.It is concluded that the relative distance of the two droplets strongly influences the dynamics of the two droplets interaction.The various surface conditions have direct effects on the dynamics of splat formation.When a droplet impacts onto an inclined surface and a sharp edge,the splat morphology changes obviously and the phenomenon of break up is observed.
numerical simulation droplet impact splat formation plasma spray forming
FANG Jian-cheng WANG Li XU Wen-ji ZHAO Zi-yu
College of Mechanical Engineering and Automation,Huaqiao University,Quanzhou 362021,China Key Laboratory for Precision and Non-traditional Machining Technology,Ministry of Education,Dalian U
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）