Accession Number : AD0164629

Title :   Metal Impregnated Graphite Fibers and Method of Making Same.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Pepper,Roger T. ; Kendall,Ernest G.

Report Date : 06 NOV 1973

Pagination or Media Count : 5

Abstract : The patent describes a technique for effecting the impregnation of graphite yarn with a metal matrix. The process includes enhancing the wettability of the graphite yarn by initially immersing the yarn in a metal infiltrate composed of either a molten tin-titanium alloy, or a molten copper-tin-titanium alloy of molten sodium. After removal from the molten infiltrate, the yarn is then immersed into a molten bath of a metal impregnate composed of either aluminum, aluminum-base alloys, magnesium, or magnesium-base alloys. The metal impregnant leaches out the metal infiltrate from the graphite yarn. This permits the metal impregnant to fill up the interstices of the yarn and coat the graphite filaments of the yarn.

Descriptors :   *Fiber reinforced composites, *Composite materials, *Patents, Graphite, Metals, Matrix materials, Carbon fibers, Impregnation, Aluminum, Magnesium, Aluminum alloys, Magnesium alloys

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE