SiC in electrolysis pots: An update

Abstract

This update reviews recent results of physical and chemical testing of Si3N4-bonded SiC sidelining material for aluminium electrolysis pots, as well as the corrosion mechanisms of SiC materials under electrolysis conditions. New test methods have been developed to show how these materials perform in a harsh operating environment. The attack by low temperature bath was tested on SiC bricks, also with SiAlON and N-SiC as binder phase. Reverse reactive sintering has become an important manufacturing process for Si3N4-bonded SiC sidelining material This review updates [1,2],.