METALLIC STRUCTURAL PART BEING PROVIDED WITH PROTECTIVE COATING SYSTEM AGAINST HIGH TEMPERATURES AND PROCESS OF APPLYING THE PROTECTIVE COATING SYSTEM

摘要

A metal substrate has a protective coating system applied on an outer surface thereof. The coating system includes an alloy layer placed on the outer surface. The alloy layer has a polished surface facing away from the outer surface. A substantially uniformly thick aluminide layer is placed on the alloy layer. A ceramic layer placed on the aluminide layer forms a thermal barrier layer. The coating process includes steps such as: placing the alloy layer on the outer surface of the body; polishing the alloy layer; placing the aluminide layer having a substantially uniform thickness on the alloy layer; and placing the ceramic layer on the aluminide layer.