REVETEMENT CERAMIQUE A FAIBLE CONDUCTIVITE THERMIQUE ET DE TYPE BARRIERE THERMIQUE, PROCEDE DE DEPOT D'UN TEL REVETEMENT CERAMIQUE, ET PIECE METALLIQUE PROTEGEE PAR CE REVETEMENT CERAMIQUE

摘要

A ceramic thermal barrier coating exhibits, in the thickness direction, a repetitive interrupted columnar growth pattern formed by repeated re-nucleation of ceramic deposition. Independent claims are also included for the following: (i) vapor phase deposition of a ceramic thermal barrier coating, comprising intermittent introduction of a polluting gas or intermittent evaporation of a polluting material which interacts with the ceramic surface during deposition and/or with chemical species in the vapor phase to produce successive ceramic re-nucleation stages during deposition; and (ii) a metallic part with a surface coated with the above ceramic coating.