ABSTRACT
In this chapter, the authors discuss the principle and requirements of the liquid–gas-solidification (LGS) process. They address the growth mechanism of LGS process. The nucleation and growth of films are a matter of thermodynamic and kinetic behavior of oxygen in the liquid alloys. In all alloy systems investigated, the formation energy of oxygen dissolved in the liquid alloys is relatively high. These results suggest that oxygen atoms diffuse interstitially in the liquid alloys. The author deals with the oxygen-diffusion-controlled growth of the oxide film. A simple model of the films grown by the liquid-gas-solidification process in an extreme condition is proposed. The enhanced growth velocity simply reflects the higher oxygen solubility in the silver-doped precursor liquid alloy, as the diffusion coefficients of oxygen in the precursor alloys are altered little by silver doping.
