Aluminum Company of America

Daniel J Boland

William P Kampert

W Thomas Evans

Larry F Wieserman

Girma Biresaw

Robert A Marra

David L Belitskus

Vince A Paola

Ronald L Abels

A method of forming fiber reinforced aluminum phosphate bonded material having improved strength at elevated temperatures. The method comprises the steps of: (a) preparing a slurry by blending alumina and aluminum phosphate solution, the slurry being substantially free of silica; (b) providing a fiber substrate coated with a metal selected from the group consisting of nickel, tungsten, molybdenum, platinum, copper, silver, gold, palladium, cobalt, chromium and titanium; (c) infiltrating the slurry into the fiber substrate; and (d) curing the infiltrated substrate to form a fiber reinforced aluminum phosphate bonded composite material. In a preferred embodiment of the present invention, the fiber substrate is made from SiC fibers and the refractory metal is electrolessly coated nickel.

Aluminum phosphate bonded fiber reinforced composite material containing

A recording medium comprising a substrate, a memory layer supported by the substrate, and a liquid crystal lubricant overlying the recording medium. The recording medium preferably has a wear layer over the memory layer. The liquid crystal lubricant comprises a cholesteric liquid crystal and cholestryl oleyl carbonate is particularly preferred. The lubricant may be applied to the recording medium by dipping in a dilute solution containing a volatile solvent and then evaporating the solvent, leaving a thin lubricant film over the wear layer.

Magnetic recording medium lubricated with a cholesteric liquid crystal

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New Kensington, PA, United States of America

Daniel J Boland