Effects of Chlorine on Aluminum Refining: A Review and an <i>Ab Initio</i> Molecular Dynamics Study

Abstract

A comprehensive introduction of current aluminum refining technology is reviewed in this work especially the effects of chlorine on refining process is discussed. The mechanism of chlorine on improving hydrogen diffusion has been studied by ab initio molecular dynamics calculations and we obtain the diffusivity of hydrogen in liquid aluminum which is in agreement with the experimental data. It can be concluded that the diffusion of hydrogen in aluminum melts can be enhanced on the presence of chlorine.

An Introduction of Aluminum Alloy Casting in Aircraft Structure

“…Metal treatment is performed for castings to achieve the highest possible quality. Degassing to hydrogen levels lower than 0.10 mL/100g and removal of oxides and other nonmetallics by gas fluxing, salt injection fluxing, and/or filtration are important to meet specified soundness levels and mechanical properties [2].…”