Abstract No.:
2605

 Scheduled at:
Wednesday, September 28, 2011, Saal C2.1 9:00 AM
Nanomaterial Coatings 2


 Title:
Nanostructured metal matrix composite coating production by pulsed gas dynamic spraying

 Authors:
Mohammed Yandouzi* / University of Ottawa (uOttawa), ON, Canada
Bertrand Jodoin / University of Ottawa, Canada

 Abstract:
The objective of this paper is to demonstrate the ability of the Pulsed Gas Dynamic Spraying process (also known as Shockwave Induced Spraying) to produce nanostructured metal matrix composite. Nanocrystalline Al5356 + 20%B4C composite feedstock powders as well as conventional Al5356 + 20%B4C composite feedstock powders were used. The influences of the coating process as well as the nature of the feedstock material on the microstructure and mechanical properties of the coatings were studied. The new spraying process provides an opportunity to produce hard and dense coatings with good cohesion between deformed particles and good adhesion to the substrate. Meanwhile no phase degradation, very low compressive residual stresses and high dry sliding wear resistance coatings were observed which seems to be an advantage compared to the traditional thermal spray coatings.

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