Abstract No.:
2723

 Title:
Potential of cold gas dynamic spraying process in the restoration of damaged alclad layer of aircraft skin

 Authors:
Mohammed Yandouzi* / University of Ottawa (uOttawa), ON, Canada
Bertrand Jodoin / University of Ottawa, CANADA
Stephen P. Gydos/ The Boeing Company, USA

 Abstract:
Unlike thermal spray process, the recent development of cold spray technology has made possible the deposition of low porosity and oxide-free coatings with good adhesion and with minimal change of the microstructure of the coated parts. This work describes and evaluates the performance of using low pressure cold gas dynamic spray system (LP-CGDS) to repair damaged alclad aircraft skin. The objective of this study is to develop an economical and practical technique for the repair/restoration of damaged alclad aircraft parts using commercially available cold spray system. The effect of the spraying process parameters on the quality of the restored part has been investigated. The optimal parameters for spraying pure aluminium onto damaged alclad substrate have been determined. Microstructures, microhardness, adhesion strength, surface finish and corrosion resistance were performed in both as-sprayed and post treated conditions using different standards.

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