Accession Number : ADD014248

Title :   Method of Fabricating a Metal/Ceramic Composite Structure.

Descriptive Note : Patent, Filed 1 Jul 87, patented 2 Feb 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Goldstein, David

Report Date : 02 Feb 1988

Pagination or Media Count : 5

Abstract : A method of producing a metal/ceramic composite structure in which an unconsolidated metal or metal alloy powder is loaded into a sealable glass mold comprising a hollow ceramic sleeve and a sealable outer glass envelopes surrounding the ceramic sleeve and forming with the outer wall of the ceramic sleeve and a sealable chamber for the metal or metal allow powder, wherein the glass is a type which becomes plastic when heated. The air in the mold is removed under vacuum and the mold is sealed and placed into a free flowing refractory powder in a crucible and consolidated by sintering under atmospheric pressure (CAP process). Removal of the glass envelop leaves a composite article having a consolidated metal or metal alloy layer surrounding and placing a hollow ceramic linear (sleeve) under both radial and axial compression. A ceramic-line metal gun barrel insert can be produced by using a ceramic sleeve with rifling on its inner surface. (JES)

Descriptors :   *COMPOSITE STRUCTURES, ALLOYS, BAROMETRIC PRESSURE, CERAMIC MATERIALS, COMPRESSION, EXTERNAL, GLASS, INTERNAL, LAYERS, METALS, MOLDS(FORMS), POWDER ALLOYS, POWDER METALS, REMOVAL, RIFLING, SINTERING, SLEEVES, SURFACES, VACUUM, WALLS

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE