Accession Number : ADD006459

Title :   Method of Making Metal Impregnated Graphite Fibers.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Levitt ,Albert P ; Band,Hans E

Report Date : 05 Jun 1979

Pagination or Media Count : 4

Abstract : A method is disclosed for pretreating graphite fibers and woven graphite preforms so that they may be wetted and infiltrated by molten metals such as aluminum and alloys thereof. Pretreatment includes immersing graphite fibers or preforms in a bath of liquid NaK alloy at room temperature. The pretreatment allows a lower temperature and shorter immersion time than prior art processes and permits improved wetting and infiltration by the molten metal constituting the matrix of a graphite fiber reinforced metal composite. (Author)

Descriptors :   *Patents, *Carbon fibers, *Graphite, *Impregnation, *Liquid metals, *Fiber reinforced composites, Wetting, Immersion, Alkali metal alloys, Potassium alloys, Sodium alloys, Aluminum, Aluminum alloys, Matrix materials

Subject Categories : Refractory Fibers
      Laminates and Composite Materials
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE