Abstract: By sessile drop technique the wetting behaviors of molten Zr55Al10Ni5Cu30 on 1Cr18Ni9Ti substrate were studied. The micrographs of the interfaces at different temperatures were observed by SEM, the interface reactions were studied by EDS and X-ray diffraction analysis, and the problems of diffusion and interface were also analyzed. The results show that the contact angle of molten Zr55Al10Ni5Cu30 and 1Cr18Ni9Ti substrate decreases as the temperature increases. The drop radius increases but the contact angle decreases as the temperature increases. The wetting process is divided into three phases at 1223K and 1273K, but there is only equilibrium phase when the temperature is above 1323K. The behaviors between Zr55Al10Ni5Cu30 and 1Cr18Ni9Ti belong to reactive wetting controlled by diffusion. There are distinct diffusion layers and reaction layers at the interfaces. The reaction product Cr2Zr is made in the side of molten Zr55Al10Ni5Cu30, and Al5Cr is produced at the interface. The appropriate preparing technique must be chosen and the reaction at the interface must be controlled when the stainless steel-reinforced Zr55Al10Ni5Cu30 bulk metal glass is prepared.
Wetting behaviors of molten Zr55Al10Ni5Cu30 on 1Cr18Ni9Ti
Abstract:
By sessile drop technique the wetting behaviors of molten Zr55Al10Ni5Cu30 on 1Cr18Ni9Ti substrate were studied. The micrographs of the interfaces at different temperatures were observed by SEM, the interface reactions were studied by EDS and X-ray diffraction analysis, and the problems of diffusion and interface were also analyzed. The results show that the contact angle of molten Zr55Al10Ni5Cu30 and 1Cr18Ni9Ti substrate decreases as the temperature increases. The drop radius increases but the contact angle decreases as the temperature increases. The wetting process is pided into three phases at 1 223 K and 1 273 K, but there is only equilibrium phase when the temperature is above 1 323 K. The behaviors between Zr55Al10Ni5Cu30 and 1Cr18Ni9Ti belong to reactive wetting controlled by diffusion. There are distinct diffusion layers and reaction layers at the interfaces. The reaction product Cr2Zr is made in the side of molten Zr55Al10Ni5Cu30, and Al5Cr is produced at the interface. The appropriate preparing technique must be chosen and the reaction at the interface must be controlled when the stainless steel-reinforced Zr55Al10-(Ni5Cu30) bulk metal glass is prepared.