C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 14/50 (2006.01) C23C 4/04 (2006.01)
Patent
CA 2614924
This invention relates to a fixture for use in a physical vapor deposition coating operation which comprises a support structure 14 comprising a circular base member 10, a circular top member 11 opposite the circular base member 10, and a plurality of structural members 12 joining said top member 11 to said base member 10; a plurality of panel members 13 aligned in a vertical direction around the outer periphery of said support structure 14 forming a cylinder-like structure; said panel members 13 including a plurality of apertures for holding workpieces 19 and 35 to which a coating is to be applied; and said apertures positioned on said panel members 13 so that said workpieces 19 and 35 are aligned in a staggered vertical direction. This invention also relates to a method for simultaneously coating a plurality of workpieces 19 and 35, such as gas turbine compressor blades and vanes, with erosion resistant coatings using the fixture of this invention.
L'invention concerne un dispositif à utiliser dans une opération de revêtement physique par dépôt en phase vapeur, qui comprend une structure de support (14) comprenant un élément de base circulaire (10), un élément supérieur circulaire (11) à l'opposé de l'élément de base circulaire (10), et plusieurs éléments de structure (12) liant l'élément supérieur (11) à l'élément de base (10); plusieurs éléments de panneaux (13) alignés verticalement autour de la périphérie extérieure de ladite structure de support (14) pour former une structure de type cylindrique; lesdits éléments de panneaux (13) comportant plusieurs orifices destinés à retenir des pièces à travailler (19 et 35) auxquelles un revêtement doit être appliqué; lesdits orifices étant placés sur lesdits éléments de panneaux (13) de façon que lesdites pièces à travailler (19 et 35) soient alignées étagées verticalement. L'invention concerne également un procédé permettant de recouvrir simultanément, à l'aide du dispositif en question, plusieurs pièces à travailler (19 et 35), telles que pales et aubes de compresseur de turbine à gaz, avec des revêtements résistant à la corrosion.
Cain Scott
Feuerstein Albert
Sharp David
Praxair S.t. Technology Inc.
Sim & Mcburney
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