Microcrystalline monolithic carbon material
OwnerLeonid F. Vereschagin, Evgeny N. Yakovlev +5inventors
InventorsLeonid F. Vereschagin, Evgeny N. Yakovlev, Vladislav N. Slesarev, Vasily A. Stepanov, Alexandr Y. Preobrazhensky, Tatyana D. Varfolomeeva, Ljudmila E. Shterenberg
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Abstract
A material consisting of grains varying in size from 0.1 to a few microns intergrown so as to form regular aggregates. The geometric shape of the material is preset by a pattern made from a carbon-bearing non-diamond material and corresponds to the shape of the required finished article. The material can be made in any desired number of identical shapes.
Claims2
A microcrystalline monolithic material of carbon crystallized to a diamond structure, consisting of intergrown grains varying in size from 0.1 to a few microns, said grains being coalesced with each other to form regular aggregates, said material having a reproducible, predetermined geometric shape corresponding to that of its non-diamond carbon-bearing material precursor, a density higher than 3.55 g/cm.sup.3, an abrasion resistance higher than 100,000 an oxidation temperature in the air higher than 700.degree. C., a hardness such that it scratches the octahedral surface of diamond, a lattice constant a.sub.o =3.566 A at a temperature of 25.degree. C. and a pressure of 1 atm., and a preset surface finish within 10-60 microns.
Dependencies are inferred from the claim text.