Diamond Jet (Hvof) Applied Abradable Coatings for Turbine Fan Case Application

Document Number: 900961

Date Published: April 1990

Author(s):
T. Chon - METCO Div. of Perkin-Elmer, Westbury, NY
L. Guimaraes - METCO Div. of Perkin-Elmer, Westbury, NY
B. A. Kushner - METCO Div. of Perkin-Elmer, Westbury, NY
A. J. Rotolico - METCO Div. of Perkin-Elmer, Westbury, NY

Abstract:
An aluminum-silicon alloy/polyester abradable coating for clearance control applications (i.e. first stage compressor seals of gas turbine engines) has been produced by using the Diamond Jet process, a High Velocity Oxy-Fuel (HVOF) system. The objective of this paper was to develop effective spray parameters for optimized coating properties for turbine fan case applications by using a statistical method known as Taguchi Analysis. The properties evaluated were coating hardness, bond strength and microstructure. By using Taguchi Analysis the relationship between the various key parameters and coating properties can be determined.

For production verification of parameters developed by using Taguchi Analysis, a turbine fan casing was sprayed with the effective spray parameters. The results indicate that the fan case coating properties meet all the aerospace specification requirements.

File Size: 1595K
Product Status: In Stock

See other papers presented at Airframe Finishing, Maintenance & Repair Conference & Exposition, April 1990, Tulsa, OK, USA, Session: Airframe Finishing, Maintenance & Repair Conference & Exposition

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