Patent ID: 7384668
Filing Date: 2008-06-10
Classification: B82Y,C01B,C23C,C30B,Y10S

Abstract:
1. A CCVD method for producing tubular carbon nano-fibers on a support by catalytic deposition of carbon from the gaseous phase, wherein before applying the catalyst layer, centers of increased surface energy are created on a surface of a support, at least in parts thereof in a previously applied layer, wherein the previously applied layer at least in parts thereof comprises a compound selected from the group consisting of TiO 2 , TiN, Ta 3 O 5 , SiO 2 , SiC, SiN and AlN worked into a suitable inert matrix as discreet crystallites, and then a currentless deposited nickel- or cobalt-based catalyst layer is applied at least in parts thereof, which is thermally activated in a reducing atmosphere before carbon is deposited from the gaseous phase.