Process For Producing a Coating Based on an Oxide Ceramic that Conforms to the Geometry of a Substrate Having Features in Relief

摘要

The invention relates to a process for producing layers made of oxide ceramic that conform to substrates having features in relief comprising: a step of depositing on said substrate a layer of a sol-gel solution that is a precursor of said ceramic; a heat treatment step of said layer with a view to converting it to the ceramic; said steps being optionally repeated one or more times, characterized in that the sol-gel solution that is a precursor of said ceramic is prepared by a process successively comprising the following steps: a) preparing a first solution by bringing the molecular precursor or precursors of the metals intended to be incorporated into the composition of the ceramic into contact with a medium comprising a diol solvent and optionally an aliphatic monoalcohol; b) leaving the solution obtained in a) to stand for a sufficient time needed to obtain a solution that has a substantially constant viscosity; c) diluting the solution obtained in b) to a predetermined amount with a dial solvent optionally identical to that from step a) or a solvent that is miscible with the dial solvent used in step a).