会议专题

Mechanical Characteristics of Al-Co-Ce Coatings Produced by the Cold Spray Process

Gas atomized feedstock particles of an Al-13Co-26Ce alloy system were sprayed using the Cold Spray deposition technique. The microstructures of the coatings produced are examined and the mechanical characteristics, in particular the bending fatigue and the bond strength, of the Al-Co-Ce coatings are reported. The results show that the Al-Co-Ce coating improved the fatigue behavior of AA 2024-T3 specimens when compared to uncoated and Alclad specimens. During the bond strength tests, the bonding agent failed and no delamination of the coating from the substrate occurred. The microstructural features of the feedstock powder were also found in the coatings. The coatings contained amorphous and crystalline phase contents similar to the ones found in the feedstock powder. It is suggested that the increase in the fatigue properties can be attributed to the residual compressive stresses induced in the coatings and to the high adhesion strength of the coatings to the substrates.

E. Sansoucy B. Jodoin G. E. Kim A. L. Moran

Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, Canada Perpetual Technologies, Iles des Soeurs, Québec, Canada Department of Mechanical Engineering, United States Naval Academy, Annapolis, Maryland, USA

国际会议

2007国际热喷涂大会

北京

英文

2007-05-14(万方平台首次上网日期,不代表论文的发表时间)