Initial Spreading Kinetics in Metal Systems with Different Interactions between Components

Abstract

The research results on the initial spreading kinetics in binary metal systems, including those that involve the formation of intermediate phases and interface mass transfer, are summarized. The drop flowing technique is used to study the effect of the temperature, drop mass, mutual saturation of the melt and solid substrate in binary systems of copper and tin with iron, cobalt, and nickel and also of tin with intermetallic compounds Ni₃Sn and Ni₃Sn₂ on the spreading rate. The proposed formal kinetic analysis of the spreading process using the power dependence for the movement of three interphase boundaries on time and exponential dependence for the difference between the cosines of quasiequilibrium dynamic angles on time permits satisfactory description of spreading under non-stationary conditions for the initial stages of the process and determination of its modes. The interphase interaction corresponds to phase equilibria in the studied systems with tin.