CARBIDE FORMING ON THE ALUMINUM-WETTED LINING'S GRAPHITIZED CARBON CATHODE SURFACE

Abstract

To protect the electrolyzer's cathode blocks and lining it is proposed in the article to use the boron and titanium compounds as the active substrate forming out of the own carbides (TiC or B4C) which create the aluminum wetted layer under the successive electro-deposition conditions when transformation and reaction transition take place. The combined processes of the wetted coatings synthesis and of the carbide forming mechanism in the carbon cathode surface layers are investigated. The various aluminum carbide forming mechanisms under its transformation into the carbide-oxide near-surface products are proposed for consideration.