Method and apparatus for making a composite carbon material
AssigneeInoue-Japax Research Incorporated
InventorKiyoshi Inoue
Life of this patent
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Abstract
A method of and an apparatus for making a composite carbon material from a precompact of granular carbons of different kinds or origins. A localized region of the carbon precompact is subjected to simultaneous heating by electric current flow from a current source at a temperature of 1800.degree. to 3500.degree. C. and pressurization at a pressure of 500 to 5000 kg/cm.sup.2, both being applied preferably impulsively. The localized region subjected to the simultaneous heating and pressurization is displaced so as to be controlledly crystallized and to control the formation of crystalline vacancies therein.
Claims16
A method of making a composite carbon material, comprising the steps of:
- (a) forming a precompact of granular carbons of different origins;
- (b) heating a localized region of said carbon precompact at a temperature between 1800.degree. and 3500.degree. C. while pressurizing said localized region at a pressure between 500 kg/cm.sup.2 and 5000 kg/cm.sup.2 in at least one direction;
- and
- (c) successively displacing, in a scanning manner, from one portion to another in said carbon precompact, said region subjected to simultaneous heating and pressurization in step (b) so as to controlledly crystallize said carbon precompact and to control the formation of crystalline vacancies therein.
An apparatus for making a composite carbon material, comprising:
- means for retaining a precompact of granular carbons of different origins;
- means for heating a localized region of the carbon precompact at a temperature between 1800 and 3500.degree. C.;
- pressure means for pressurizing said localized region under a pressure between 500 and 5000 kg/cm.sup.2 while said region is being heated by said heating means;
- and
- drive means for displacing, in a scanning manner, said localized region of the carbon precompact subjected to the simultaneous heating and pressurization so as to controlledly crystallize said region and to control the formation of crystalline vacancies therein.
A method of making a composite carbon material, comprising the steps of:
- (a) forming a precompact of granular carbons of different origins;
- (b) heating a localized region of said carbon precompact at a temperature between 1800.degree. and 3500.degree. C. while pressurizing said localized region at a pressure between 500 kg/cm.sup.2 and 5000 kg/cm.sup.2 in at least one direction;
- (c) successively displacing, in a scanning manner, from one portion to another in said carbon precompact, said region of the carbon precompact subjected to simultaneous heating and pressurization in step (b) so as to controlledly crystallize said carbon precompact and to control the formation of crystalline vacancies therein;
- and
- (d) applying an ultrasonic vibrational energy to said localized region of the carbon precompact.
Dependencies are inferred from the claim text.