Aluminum hydroxides are used as solid lubricants for aluminum oxides, cercs and other materials having oxide surfaces. Aluminum oxide hydroxides and aluminum trihydroxides are preferred compositions for such lubricating purposes. In particular, the use of boehmite in an aqueous solution significantly...http://www.google.es/patents/US4919829?utm_source=gb-gplus-sharePatente US4919829 - Aluminum hydroxides as solid lubricants
