Stabilizers for titanium diboride - containing cathode structures

摘要

A method is described for making aluminium reduction cell components, e.g. cathodes having stabilized surfaces, which comprises mixing together a carbonaceous material, TiB2 and up to 25% by weight of a finely divided additive consisting of a combination of two intimately mixed compounds and forming the mixture into a cell component, wherein at least a first of the two compounds has a higher melting temperature than the baking temperature. When the cell component is contacted with molten aluminium, the aluminium reacts with the additive to form a dense phase at the surface of the cell component, having low solubility in aluminium.