| 摘要 |
<p>Segmented gadolinia zirconia coatings, and methods of making same, are described herein. These segmented gadolinia zirconia coatings are created by plasma spraying a gadolinia zirconia coating onto a bond-coated substrate under predetermined conditions so that segmentation is induced in the gadolinia zirconia coating during plasma spraying thereof. These segmented gadolinia zirconia coatings may comprise a single layer, or may comprise a coating system comprising a base foundation layer; a graded interlayer disposed on the base foundation layer; and an abradable gadolinia zirconia top layer disposed on the graded interlayer, wherein the graded interlayer comprises a compositional blend of the base foundation layer and the abradable gadolinia zirconia top layer. Coated components comprising a metallic substrate; a MCrAlY bond coat disposed on the metallic substrate, wherein M denotes nickel, cobalt, iron, or mixtures thereof; and a segmented gadolinia zirconia coating disposed on the MCrA1Y bond coat are also described. These coatings may be used as abradable coatings and/or as thermal barrier coatings.</p> |
