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Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/61346

#### **Abstract**

Thermal barrier coatings (TBCs) provide effective thermal barrier to the components of gas turbine engines by allowing higher operating temperatures and reduced cool‐ ing requirements. Plasma spraying, electron-beam physical vapor deposition, and sol‐ ution precursor plasma spray techniques are generally used to apply the TBCs on the metallic substrates. The present article addresses the TBCs formed by different proc‐ essing techniques, as well as the possibility of new ceramic, glass-ceramic, and com‐ posite materials as TBCs. Promising bond coat materials for a TBC system have been also stated.

**Keywords:** Processing techniques, new TBC materials, engine applications
