Patent ID: 8595929
Filing Date: 2013-12-03
Classification: B23P,F01D,F05D,Y10T

Abstract:
1. A method of repairing a turbine engine component, the method comprising: applying a colloidal solution to a surface of a turbine engine component having a surface opening crevice, the colloidal solution comprising nanoparticles suspended in a solvent; allowing the colloidal solution to penetrate the crevice and loosen a contaminant material disposed within a tip region of the crevice; removing the colloidal solution and loosened contaminant material from the crevice and surface; depositing a repair material onto the surface and into the crevice to penetrate the tip region of the crevice previously occupied by the contaminant material; and, wherein the solvent comprises a non-polar solvent, and wherein the colloidal solution is characterized as: (either nano silicon nitride or nano silicon carbide)+(either Decalin or Hexane)+polyvinyl chloride (particle D(50)), wherein particles of the colloidal solution are characterized by: particle D(50)=20 nm, 50 nm and/or 80 nma specific surface area=130 to 35 m