Process for coating ceramic filaments and novel coated...

Details Process for coating ceramic filaments and novel coated... Process for coating ceramic filaments and novel coated...

C - Chemistry, Metallurgy

23

C

C23C 16/26 (2006.01) C04B 41/45 (2006.01) C04B 41/85 (2006.01) C23C 16/46 (2006.01) C23C 16/54 (2006.01)

Patent

CA 2046088

Case 7531(2) Abstract PROCESS FOR COATING CERAMIC FILAMENTS AND NOVEL COATED CERAMIC FILAMENTS A process for the deposition of a carbon coating on a filament which comprises passing the heated filament through a deposition chamber containing gases which, on contact with the hot filament, deposit a carbon coating; characterised in that the deposition chamber comprises distinct first and second regions, the first region having a greater diameter than the second region. The carbon coating comprises at least two distinct layers of carbon when viewed under a scanning electron microscope, one layer presenting a visual appearance of a laminated microstructure and a second layer presenting a homogeneous visual appearance.

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