Swiss Aluminium Ltd.

Hans Wolfhart Rieger

Tibor Kugler

Hanspeter Alder

The minute pores and discontinuities which are normally present in protective oxide coatings on carbon bodies can be closed and, if desired, filled by immersing the coated carbon body in a metal salt melt having a boiling point above 400.degree. C., and electrodepositing the melt on the coated carbon body. When the electrodeposition step is continued sufficiently long to fill the pores, the product when cool is a coated carbon body carrying an oxidation agent-resistant coating which is keyed into the surface of the carbon.

Oxygen-resistant electroconductive carbon bodies

A conductor rail includes a load-bearing body of aluminum or an aluminum alloy, and a layer of steel metallically united to the body on the part of the rail to which electrical contact is to be made during use thereof, the steel layer conductively contacting the body.

Conductor rail

A method of applying to an anode for use in fusion electrolysis a coating for protection of the anode against surrounding influences, comprising delivering the material of the coating in finely dispersed form onto the anode with sufficient heat content and impact energy to cause adhesion between the material and the surface of the anode and consolidation of the material. Preferably the material is applied by means of a plasma burner and, for an anode to be used for the electrolytic production of aluminium, includes aluminium oxide and facultatively aluminium, the thickness of the coating beeing about 0.1 to 1.0 mm.

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Beringen, Switzerland

Hans Wolfhart Rieger