Patent ID: 6419753
Filing Date: 2002-07-16
Classification: C23C

Abstract:
A dovetail section receptacle apparatus for use in vapor phase diffusion coating of airfoil flowpath surfaces and upper platform surfaces of a plurality of turbine airfoils while avoiding coating of dovetail surfaces thereof, the apparatus comprising:a dovetail section receptacle for receiving dovetail sections of a plurality of turbine airfoils arranged in side-by-side relation, the dovetail section receptacle comprising a chamber having an opening at a top of the receptacle for inserting said plurality of turbine airfoil dovetail sections into the chamber, and a rim around the opening, the rim being sized for supporting the platforms of the turbine airfoils in side-by-side relation; and a plurality of spacers, each of said plurality of spacers being positioned between platforms of adjacent pairs of airfoils of said plurality of turbine airfoils to prevent said platforms from contacting each other.