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:

1988-02-02

Pagination or Media Count:

5.0

Abstract:

A method of producing a metalceramic 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