Method for applying a diamond layer onto a graphite substrate

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United States of America Patent

PATENT NO 8597731
APP PUB NO 20090162549A1
SERIAL NO

12338107

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Abstract

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A diamond layer can be applied stably onto a graphite substrate in a CVD process when the graphite substrate is subjected to the following pretreatment steps before the CVD process:

    fine cleaning of the surface in a vacuum at a temperature >500° C., preferably >800° C., in an etching gas atmosphere,mechanical removal of loose particles,seeding of the substrate surface with very small diamond particles andat least one degassing treatment in a vacuum to remove adsorbed hydrocarbons and adsorbed air at a temperature T>500° C., preferably T>700° C.

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Patent Owner(s)

Patent OwnerAddress
CONDIAS GMBH25524 ITZEHOE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fryda, Matthias Itzehoe, DE 17 339
Matthee, Thorsten Hohenaspe, DE 11 54
Mulcahy, Shane Hamburg, DE 1 4

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