Cold gas dynamic Spray "Cold Spray" Deposition
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In cold gas dynamic spray ("cold spray"), we use a supersonic gas jet to accelerate small metal particles (10-40 microns in diameter) to supersonic velocities. When these particles impact a substrate, they permanently bond to the material, and can thus be used to build up the structure. We are applying this technique to high strength aluminum alloys (e.g. AA7075 and AA2024) for aircraft structural repairs, to high strength steels (e.g. HY-80 and 4340) for ship repair, and to austenitic stainless steels for nuclear waste storage cask repair.
This research is sponsored by the Office of Naval Research, the Technical Corrosion Collaboration, the Nuclear Energy University Program, Army Research Laboratory, and the Boeing Company.
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High-pressure cold spray system at UA
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Contributors: Munsu Kim & Madison Voyda
