International Thermal Spray Conference (ITSC) 2009 (May 4-7, 2009): In Situ Monitoring of Particle Consolidation during Low Pressure Cold Spray by Ultrasonic Techniques
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In Situ Monitoring of Particle Consolidation during Low Pressure Cold Spray by Ultrasonic Techniques

Thursday, May 7, 2009: 10:50 AM
Laughlin II (Flamingo Las Vegas Hotel)
Prof. Roman Gr. Maev , University of Windsor, Windsor, ON, Canada
Sergey Titov , University of Windsor, Windsor, ON, Canada
Mark Lubrick , University of Windsor, Windsor, ON, Canada
Elena Maeva , University of Windsor, Windsor, ON, Canada
Volf Leshchynsky , University of Windsor, Windsor, ON, Canada
A novel ultrasonic technology is developed to monitor the LPCS coating formation in real time. The multi-channel ultrasonic matrix  transducer installed at an opposite sheet side generates the sound waves which penetrate both the plate and coating. The waves reflect off the substrate-coating interface and coating surface in the direction perpendicular to the plane of the plates. The pulse repetition is high enough to generate a picture showing the coating in various areas of  the coating  path , and its evolution. Additionally, acoustic noise generation, an accompanying effect produced during LPCS, is examined. It is shown that spraying parameters strongly affect the thickness, microstructure and strength of coating, and in situ monitoring technique for coating process allows to control the coating performance.
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