Community Research and Development Information Service - CORDIS

Abstract

Thin carbonaceous films have been prepared on samples of stainless steel, Inconel 600, Inconel 625 and silicon by carbonization from CH-4-H-2 mixtures. They were investigated by transmission electron microscopy, nuclear reaction and backscattering techniques and thermal desorption. The films are semi-transparent, amorphous and homogeneous down to sim10 AA. Their composition is H/C = 0.4 pm 0.1 and independent of the substrate. The density is 1.4 g cm"-3", the average C- C atomic distance sim2.5 AA. The films release H-2 and about 3--10% CH-4 upon heating. The desorption CH-4 occurs in a well defined peak around 500circC, whereas H-2 is released up to 1100circC. The films turn black in colour after the CH-4 has been released, possibly due to a transformation from the initial amorphous into a graphitic structure.

Additional information

Authors: WINTER J, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;ESSER H G, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;WIENHOLD P, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;PHILIPPS V, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;VIETZKE E, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;MOELLER W, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;EMMOTH B IPP, D, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM, IPP, D;FORSKNINGSINSTITUTET FOR ATOMFYSIK, STOCKHOLM
Bibliographic Reference: NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH, VOL. B23, PP 538-543, 1987
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top