FIELD: metallurgy.
SUBSTANCE: proposed unit has at least one surface layer with surface expansion factor and second layer with second expansion factor. Surface layer comprises surface wetting agent at first total amount. Second layer comprises wetting agent at second total amount. Surface layer is applied directly on second layer. Second wetting agent in second layer comprises precursors of interacting metal borides to form metal boride in-situ by application of electrolytic cell starting and operating effects to cathode unit. Second total amount is smaller than first one and selected to minimise difference between first and second layer surface expansion factors. Invention covers also the method of making said multilayer cathode unit.
EFFECT: higher quality and lower costs.
25 cl, 3 dwg, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CRYOLITE ALUMINA MELTS ELECTROLYSIS USING SOLID CATHODES | 2019 |
|
RU2716569C1 |
| METHOD OF PRODUCING AND MAINTAINING PROTECTIVE WETTABLE COVER ON CARBON BLOCKS OF CATHODE ASSEMBLY OF ELECTROLYTIC TANK FOR ALUMINIUM PRODUCTION | 2006 |
|
RU2337184C2 |
| METHOD TO CREATE WET COATING OF CARBON HEARTH IN ALUMINIUM CELL | 2012 |
|
RU2486292C1 |
| METHOD FOR PRODUCING COMPOSITE CARBON-CONTAINING MATERIAL | 2022 |
|
RU2793027C1 |
| ELECTRODE OF ALUMINUM ELECTROLYTIC CELL (OPTIONS) | 2015 |
|
RU2660448C2 |
| METHOD FOR MANUFACTURING COMBINED BOTTOM BLOCKS | 2012 |
|
RU2510822C1 |
| WETTABLE COATING ON ALUMINUM CELL HEARTH APPLYING METHOD | 2005 |
|
RU2299278C2 |
| METHOD OF PRODUCTION OF MULTI-LAYER CATHODE STRUCTURE | 1999 |
|
RU2227178C2 |
| STABILISERS FOR CATHODE CELL ELEMENTS CONTAINING TITANIUM DEBORIDE | 2004 |
|
RU2360042C2 |
| PRECURSOR OF THE COATING AND THE METHOD OF DEPOSITION OF THE REFRACTORY LAYER ON THE SUBSTRATE | 2002 |
|
RU2293797C2 |
