USA As Represented by Secretary of the Navy

Alfeo A Conte, Jr

Vinod S Agarwala

Krishnaswamy S Rajan

J Lee Hammond

Neal D Rebuck

Prabir K Sen

The invention comprises a self-lubricating ceramic composite characterized as having a low porosity derived from a mixture of at least one ceramic powder preferably selected from the group consisting of silicon nitride, silicon carbide, zirconia, alumina, zirconium nitride, tungsten carbide, and titanium carbide; a cemetitious binder, effective amounts of at least one metal silicide, and at least one metal oxide. The ceramic powder mixture can be slurried with sufficient amounts of water and subsequently subjected to pressures of about 6.0 to 7.0 MPa in a mold at temperatures of about 125&deg; to 175&deg; C. to form a self-lubricating ceramic composite capable of maintaining hot-hardness temperatures above 750&deg; C. These self-lubricating ceramic composites are particularly useful in the manufacture of high-performance turbine engines, including engine parts, bearings, gears, rotors and in other areas where high-heat lubricating properties of the ceramic composite are required.

Self-lubricating ceramic composites

This invention relates to a method and composition for improving the corron resistance and anti-wear properties of synthetic lubricating oil greases comprising the addition to said greases of effective amounts of a chelated Schiff base derived from the condensation of approximately stoichiometic amounts of at least one aldehyde and a polyamine.

Synthetic lubricating oil greases containing metal chelates of Schiff

A mixture of nondeuterated and partially or fully deuterated hydrocarbon ricants. Such a mixture exhibits substantially improved bearing performance life and oxidation resistance, without having fully deuterated the entire lubricant.

Deuterated lubricant

A fire resistant silicone-base hydraulic fluid having improved antiwear perties comprising tetrachlorophenylmethyl silicone fluid, dibutylchlorendate and 2,5-bis-alkyl-dithio-1, 3, 4 thiadiazole.

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Warrington, PA, United States of America

Alfeo A Conte, Jr