Accession Number : AD0163911

Title :   Method for Preparing Metal Matrix Composites Containing Modified Polytetrafluoroethylene.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Boes,David J.

Report Date : 18 JUL 1972

Pagination or Media Count : 3

Abstract : The patent describes a self-lubricating composite. Polytetrafluoroethylene, sold under the trademark Teflon, is modified before being blended with metal powder and formed into a composite. Modification is accomplished by heating the Teflon for 1 to 2 hours at 1,000-1,100F and then for 3 to 3.5 hours at 650 to 750F. Metal matrix composites containing modified Teflon as a filler are useful as retainer materials for bearings which are subjected to high temperature operating conditions.

Descriptors :   (*LUBRICANTS, *COMPOSITE MATERIALS), (*PATENTS, LUBRICANTS), HALOCARBON PLASTICS, HEAT TREATMENT, SILVER, MOLYBDENUM COMPOUNDS, SULFIDES, BALL BEARINGS, WEAR RESISTANCE, SILVER ALLOYS, MERCURY ALLOYS

Subject Categories : Laminates and Composite Materials
      Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE