Ceramic coatings for high temperature oxidation protection

3 Ceramic coatings for high temperature oxidation protection 

Multilayered coating systems we discuss here are composed of alternate layers of two or more different types of materials. The thickness of each sub-layer is in the range of a few nanometers to sub-micrometer level. The spacing between two layers is so small that the defect size and dislocation movement can be effectively 

In the authors group, a technique combining electrochemical deposition and sintering has successfully produced and (Zr02-Y203)/(Al203-Y203) 

7 (Zr02-Y203)/(Al203-Y20g) composite coating with six sub-layers (a) cross-section and (b) top surface. 

8 A schematic showing different oxygen diffusion paths in composite coatings. 

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