Coatings and Surface Engineering (CSE)

Cold Gas Dynamic Spraying

In cold gas dynamic spray a powder particle in the size range of 5-25 m is accelerated to supersonic velocity (500- 1200 m/s) and a coating is formed without melting of the powder. The process can retain the feedstock powder microstructure and it has received widespread attention in spraying oxygen sensitive materials such as Ti, Al and Ni alloys for aerospace and high value manufacturing applications. The CME team has published several high impact papers on fundamental understanding of bonding and particle deformation in cold spray.

A cold sprayed Ti particle onto steel substrate showing jet formation - Cold Gas TopicA cold sprayed Ti particle onto steel substrate showing jet formation

Top surface morphology of 1 mm thick Ti deposit showing particle jetting - Cold Gas TopicTop surface morphology of 1 mm thick Ti deposit showing particle jetting

 

Fracture surface of an aluminium substrate after removing copper coating - Cold Gas TopicFracture surface of an aluminium substrate after removing copper coating

Coatings and Surface Engineering (CSE)

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The University of Nottingham
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email:tanvir.hussain@nottingham.ac.uk