Patent ID: 8343582
Filing Date: 2013-01-01
Classification: C23C

Abstract:
1. A process for depositing a non-oxide ceramic coating of carbides, nitrides or carbonitrides of chromium or of another metal whose chemical properties are similar to chromium, by chemical vapor-phase deposition on a metal substrate, comprising the steps of: a) providing a precursor solution that contains a metal precursor compound to be deposited, said compound belonging to the bis(arene) family and having a decomposition temperature between 300° C. and 550° C., whereby said compound is dissolved in an oxygen-free solvent, b) introducing said precursor solution in aerosol form into an evaporator that is heated to a temperature of between the boiling point of the solvent and the decomposition temperature of the precursor, and c) entraining the precursor compound and the solvent that are evaporated by a neutral gas stream from the evaporator to a cold-wall CVD reactor comprising a susceptor that supports the substrate to be coated, wherein the susceptor is heated to a temperature that is higher than the decomposition temperature of the precursor and at most 550° C., whereby the evaporator and the CVD reactor are subjected to atmospheric pressure.