E. Sansoucy, B. Jodoin, University of Ottawa, Ottawa, ON, Canada; L. Ajdelsztajn, University of California, Davis, Davis, CA; P. Marcoux, Vac Aero International Inc., Boucherville, QC, Canada
Alloys reinforced with particulate ceramics offer property enhancements such as increased hardness, improved wear resistance, better thermal stability, and superior yield strength. The objective of this study is to develop aluminum alloy coatings reinforced with dispersed SiC particles using the Cold Spray deposition process. Several mass fraction combinations of an aluminum alloy powder and SiC reinforcements were created and subsequently sprayed. The mechanical properties of these aluminum alloy coatings reinforced by SiC particles are examined in this paper. The coatings’ microstructures are characterized using scanning electron microscopy (SEM). In addition, the coatings are subjected to adhesion strength and hardness testing according to standard mechanical testing methods. In this paper, these mechanical properties are correlated to the particle velocities, which were measured by a laser diagnostic system. The effects of various ratios of particulate ceramic, based on the coatings’ microstructures, bond strengths, and hardness are also described.
Summary: The objective of this study is to develop aluminum alloy coatings reinforced with dispersed SiC particles using the Cold Spray deposition process. The coatings’ microstructures are characterized using scanning electron microscopy. The coatings are also subjected to adhesion strength and hardness strength testing. The effects of various ratios of particulate ceramics, based on the coatings’ microstructures, bond strengths, and hardness are described in this paper.
