Accession Number : ADD009050

Title :   Bonded Bulk Graphite and Process for Bonding.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Riggs,Dennis M ; Harvey,Edward L

Report Date : 21 Aug 1981

Pagination or Media Count : 12

Abstract : Bulk pieces of graphite bonded with a graphitizable binder comprising a liquid crystalline component of pitch, which softens at about 240 C and becomes very fluid at about 300 C to about 500 C. The bonded graphite pieces appear as a monolithic material even under 1000x magnification. The bonding is effected under vacuum or in an inert atmosphere at temperatures of from about 700 C to about 3000 C, usually about 1000 C to about 1500 C, under pressure of from about 20 psi to about 1000 psi applied in a direction normal to the bonding surface. (Author)

Descriptors :   *Patent applications, *Graphite, *Bonding, Binders, Heat treatment, Pitch(Material), Hydrocarbons, High temperature, Liquid crystals, Ablative materials, Bulk materials, Fabrication, Interfaces, Inventions

Subject Categories : Geology, Geochemistry and Mineralogy
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE