[split] Can plasma coat graphite on copper?

[hanker886]

Does anyone knows if plasma can be used to coat fine graphite powder on copper plate. This is to be used as electrode.

Thanks

[Gordon]

Hi hanker886

to the Surface Engineering Forum.

I don't think so, certainly not with atmospheric thermal spray techniques, carbon will just burn away. Even if you managed a deposit, I would suspect it would be no better than soot, which you could get simply get by using a very reducing acetylene flame .

Graphite can be deposited, but only when combined or co-sprayed with a metal binder such as with the nickel/graphite abradable coatings.