Patent ID: 7150926
Filing Date: 2006-12-19
Classification: C23C,F01D,F05D,Y02T,Y10T

Abstract:
1. A thermal barrier coating for coating a substrate, comprising: a bond coating layer disposed on a surface of said substrate; a segmented columnar ceramic layer disposed on said bond coating layer, said segmented columnar ceramic layer comprising a layer of stabilized zirconia disposed on said bond coating layer, a layer of stabilized hafnia disposed on said layer of stabilized zirconia, and a transition region between the layers of stabilized zirconia and the stabilized hafnia in which a stabilized zirconia concentration decreases and a stabilized hafnia concentration increases along a transition gradient, said ceramic layer having a plurality of adjacent columns formed substantially therethrough and a plurality of segmentation gaps between the adjacent columns; and a structure-stabilizing material disposed within said plurality of segmentation gaps between the adjacent columns.