PROCESS FOR DEPOSITING A COATING FOR PROTECTION AGAINST OXIDATION AND AGAINST HOT CORROSION ON A SUP

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Process for depositing a coating for protection against oxidation and against hot corrosion on a superalloy substrate, and coating obtained The present invention relates to a process for depositing a coating for protection against oxidation and against hot corrosion on a metallic superalloy substrate (1), characterized by the fact that it comprises the deposition of the following successive layers on the substrate, a first layer of aluminium and of at least one element capable of being alloyed with sulphur, a second layer of a material that isolates said element capable of being alloyed with sulphur. The element capable of being alloyed with sulphur is chosen from the reactive elements : zirconium, hafnium, yttrium, silicon, and the rare earth elements : cerium, lanthanum, gadolinium. The invention also relates to the coating thus formed.