SEALING OF ELECTROLYTICALLY FORMED POROUS FILMS OF ALUMINUM BY NICKELFLUORIDE PROCESS

Since the early 1980s, nickel fluoride cold sealing of anodized alumin um, on the basis of energy saving processes, has been marketed in indu stry. Currently, it is possible to substitute cold sealing as an alter native to conventional hydrothermal sealing, almost without any drawba cks, while enabling reduced treatment time, reduced cost of operation and, most important, energy conservation. The most important criteria associated with cold sealing are covered, with attempts to present the findings as an independent view of the process.