Metal Surfaces Operating At Elevated Temperatures Usually Require Thermal Barrier Coatings (TBCs)
The metal substrate, metallic bond coat, thermally generated oxide (TGO), and ceramic topcoat are the usual four layers of thermal barrier coatings. Yttria-stabilized zirconia (YSZ), which has a very low conductivity and is stable at the nominal operating temperatures normally seen in Thermal Barrier Coatings applications, is often used as the ceramic topcoat. The highest thermal gradient of...
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