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Non-equilibrium solidification of the molten metal droplets impacting on a solid surface |
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| Affiliation: | 1. College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;2. Key Laboratory of Ocean Energy Utilization and Energy Conservation of MOE, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian, Liaoning 116024, China |
| Abstract: | A measuring method for the kinetic coefficient and activation energy of molten metals has been developed. This method is based on a splat thickness measurement of a molten metal droplet deposited on a polished metal substrate. An analytical solution of a non-equilibrium crystallization of a molten metal droplet impacting on a solid substrate relates the thickness of the splat to the kinetic coefficient. The dimensionless number showing the departure of the equilibrium phase transition from the non-equilibrium transition follows from the theory. The predicted values of the kinetic coefficient and activation energy agree well with the existing literature data. |
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