摘要
A good understanding of melting and resolidification of the substrate will help us to achieve better bonding.Anumerical model is developed to investigate the solidification of the droplet,and melting and resolidification of thesubstrate.The molybdenum powder spraying onto three different substrates:a stainless steel,brass(70%Cu)andaluminum by atmospheric plasma spraying has been investigated.The maximum melting depth of the substrate hasbeen measured and compared with the numerical prediction.Experimental results show that the material propertiesof the splat and substrate and melting temperature of the substrate play the important roles on substrate melting.A dimensionless parameter,temperature factor,has been proposed and served as an indicator for substrate melting.
基金
This work was supported by the National Science Foundation under award No.CTS-9876198
MRSEC program under award No.DMR-00800221.
