Coatings MCrAlY metallic

The TBCs deposited by plasma spraying consist (adjacent to the metallic substrate Inconel, Hastelloy, Ti6Al4V) of a dense MCrAlY (M = Ni, Co) alloy bond coat which is laid down by low-pressure plasma spraying (LPPS), followed by a porous stabilized zirconia top coat in the thickness range of 300 to lOOOgm (Cernuschi et al., 2004), as shown schematically in Figure 7.39. During operation. 

Thermal evaporation uses the atomic cloud formed by the evaporation of the coating metal in a vacuum environment to coat all the surfaces in the line of sight between the substrate and the target (source). It is often used in producing thin 0.5 pm coatings or a very thick 1-mm layer of heat-resistant materials, such as MCrAlY—a metal, chromium, aluminum, and yttrium alloy. 

Metal-glass composite has recently become an attractive TBC candidate, based on three major advantages over other TBC materials high CTE (12.3 X 10 K ), good adherence to the underlying bond coat, and excellent oxidation resistance due to the absence of open porosity. The metal-glass composite consists of an ordinary glass and a MCrAlY alloy. 

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