| 摘要 |
A gas turbine component ( 20 ) with a layer of ceramic material ( 22 ) defining a wear surface ( 21 ), in which an array of cross-shaped depressions ( 26 A, 26 B) formed in the wear surface ( 21 ) define a continuous labyrinth of orthogonal walls ( 28, 30 ) of the ceramic material, and reduce the area of the wear surface ( 21 ) by about 50%. Within a representative area ( 36 ) of the wear surface ( 21 ), the depressions ( 26 A, 26 B) provide a ratio of a lineal sum of depression perimeters ( 27 ) divided by the representative area ( 36 ) of the wear surface of least 0.9 per unit of measurement for improved abradability characteristics of the wear surface ( 21 ).
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