Formation of Al(2)O(3) From Porous aluminum Near Room Temperature and Applications
Original Publication Date: 1978-Feb-01
Included in the Prior Art Database: 2005-Feb-20
Porous aluminum can be formed at near room temperature by simple evaporation or sputtering of aluminum at argon pressures of from 0.5-40 mu m This material should be readily anodizable to form Al O . In general, suitable forming electrolytes are aqueous solutions of the salts of weak acids, such as borates, tartrates, and citrates. A common electrolyte may contain 10% boric acid and a small amount of borax (generally less than 1%). Details of such anodization processes are well documented by S. Wernick and R. Pinner, The Surface Treatment and Finishing of Aluminum, Robert Draper Ltd., Teddington, Great Britain, 1964.