| 摘要 |
The present invention is an apparatus for masking an exterior dovetail surface of a turbine airfoil for use in coating a turbine airfoil, wherein the apparatus comprises a turbine airfoil. The apparatus comprises a plurality of dovetail graphite sponge boot sections. The boot comprises a first interior surface assembled to the turbine airfoil to contact substantially all of an exterior dovetail surface of the turbine airfoil, while leaving exposed an exterior airfoil flowpath surface, a root portion of the exterior dovetail surface and an interior passageway surface. The boot further comprises second interior channel surfaces defining interior boot channels, a first exterior surface, a first aperture in the first exterior surface, the turbine airfoil extending out of the boot through the first exterior surface, a second exterior surface, second apertures in the second exterior surface in fluid communication with the interior cavity, the interior passageway surface, and an exterior environment.
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