Kinetics Difference of Intermetallic Compound Layers during Sn1.5Cu/Cu Liquid-solid Reactions in Uniform and Gradient High Magnetic Field

摘要

The Sn1.5Cu/Cu liquid-solid interfacial reactions under uniform and gradient high magnetic field were investigated to study the effect of these fields on the growth kinetics of interfacial intermetallic compound (IMC) layers. The experimental results show that the growth of interfacial IMC layer was slightly inhibited by the uniform magnetic field, while the gradient magnetic field promoted the growth of IMC layer. Based on the analysis of experimental results, it can be suggested that the growth of IMC layers can be retarded by the suppressed natural convection induced by the Lorentz force. But in gradient field, the propagation of IMC layers also can be promoted by the increment driving force for Cu diffusion. These effects lead to the kinetics difference of IMC layers in the magnetic fields.