Process for producing diamond powder by shock compression
AssigneeNational Institute for Researches in Inorganic Materials
InventorNobuo Setaka
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Abstract
A diamond powder is produced by a shock compressing method using a carbon precursor obtained by an organic compound such as furan resin, its derivative, a thermosettable resin, as a carbon source.
Claims8
In a process for producing a diamond powder by a shock compressing method, an improvement characterized by applying the shock compression to a carbon precursor obtained by heating at about 400.degree. to 500.degree. C. and thereafter pulverizing an organic compound which is not substantially melted by heating at 400.degree. to 1000.degree. C. and which is a thermosettable resin or cellulose, as a carbon source.
In a process for producing a diamond powder by a shock compressing method, an improvement characterized by applying the shock compression to a carbon precursor obtained by heating in a nitrogen atmosphere at about 400.degree. to 500.degree. C. and thereafter pulverizing a furan resin obtained by thermosetting furfuryl alcohol in the presence of an organic acid, the carbon precursor being admixed with conductive metal powder at a ratio of more than 80 wt.% of said metal powder to said carbon precursor, and said mixture is molded and compressed to a porosity of less than 30% and a shock compression of 40 to 150 GPa is applied to the molded product by an explosion wave.
Dependencies are inferred from the claim text.