Composite element, process for its preparation and its use
OwnerBenno Luxinventor
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Abstract
A composite element is disclosed, having improved heat conductivity, and is composed of a substrate whose surface layer enables homeo- or heteroepitactic growth of the diamond lattice from the gas phase, and of a low pressure diamond layer grown on the substrate, and in which the diamond layer grown is enriched compared to the normal diamond composition in the carbon isotope C.sup.12 and depleted in the heavier carbon isotopes C.sup.13 and C.sup.14.
Claims18
Composite element having improved heat conductivity, comprising a substrate having a surface layer that enables growth of column-crystalline diamond from the gas phase, and a low pressure diamond layer grown on the substrate, wherein the grown diamond layer is enriched compared to the normal diamond composition in the carbon iostope C.sup.12 and depleted in the heavier carbon isotopes C.sup.13 and C.sup.14 and is composed of column-crystalline diamond.
Process for the preparation of a composite element by growing a diamond column-crystalline layer by low pressure diamond synthesis on a substrate, characterized in that, during the growth of the diamond layer a gas enriched in the carbon isotope C.sup.12 and depleted in the heavier carbon isotopes C.sup.13 and C.sup.14 is used in the gas phase.
Dependencies are inferred from the claim text.