Crystallographic texture of EB-PVD TBCs deposited on stationary flat surfaces in a multiple ingot coating chamber as a function of chamber position

The crystallographic texture of EB-PVD TBCs has been experimentally determined by pole figure analysis and X-ray diffraction. It was found that the TBC coating deposited on a stationary flat surface directly above an ingot or between the two ingots and off center exhibited single crystal texture. Coatings deposited at the far corners of the coating chamber revealed a fiber texture with [111] column growth direction. The Bragg-Brentano X-ray diffraction analysis revealed a variety of textures (i.e. crystallographic planes that are parallel to the substrate surface) with the most predominant planes being the (220), (311), (420) and (620). (C) 2002 Elsevier Science B.V. All rights reserved.