High strength graphite and method for preparing same

US3993738A · kind A · utility

Assignee

• The United States of America as represented by the United States Energy Research and Development Administration · US

Inventors

• Lyle G. Overholser · Oak Ridge, US
• David R. Masters · Laguna Hills, US
• John M. Napier · Oak Ridge, US

Key dates

• Filing date: Nov 8, 1973
• Grant date: Nov 23, 1976
• Expiry date: Nov 8, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/532
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

High strength graphite is manufactured from a mixture of a particulate filler prepared by treating a particulate carbon precursor at a temperature in the range of about 400.degree. to 1000.degree. C., an organic carbonizable binder, and green carbonizable fibers in a concentration of not more than 2 weight per cent of the filler. The use of the relatively small quantity of green fibers provides a substantial increase in the flexural strength of the graphite with only a relatively negligible increase in the modulus of elasticity.