Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Metal or metal alloy
Patent
1999-01-25
2000-03-07
Tung, T.
Electrolysis: processes, compositions used therein, and methods
Electrolytic material treatment
Metal or metal alloy
205730, 205731, 205732, 205734, 205735, 2041961, 20419621, 20419623, 20419636, C23F 1300
Patent
active
06033553&
ABSTRACT:
The present invention relates to the field of cathodic protection of reinforced concrete. A conductive metal is thermally applied onto an exposed surface of the concrete in an amount effective to form an anode on the surface. This establishes an interface between the anode and the concrete. The thermal application is performed in a manner which is effective to impart permeability to the anode. A lithium salt solution selected from the group consisting of lithium nitrate solution, lithium bromide solution, and combinations thereof is applied to the external surface of the anode. The solution migrates by capillary attraction to the interface of the anode with the concrete depositing the lithium salt at the interface. The lithium salt functions as a current enhancing agent. The salt also functions as a humectant absorbing moisture from the atmosphere thereby providing an electrolyte at the interface. These combined effects substantially increase current delivery from the anode.
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patent: 4506485 (1985-03-01), Apostolos
patent: 5141607 (1992-08-01), Swiat
patent: 5183694 (1993-02-01), Webb
patent: 5505826 (1996-04-01), Haglin et al.
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