Ti and Ti-6Al-4V Coatings by Cold Spraying and Microstructure Modification by Heat Treatment (pages 418–423)
W.-Y. Li, C. Zhang, X. Guo, J. Xu, C.-J. Li, H. Liao, C. Coddet and K. A. Khor
Version of Record online: 18 MAY 2007 | DOI: 10.1002/adem.200700022
Microstructure characteristics of cold sprayed Ti and Ti-6Al-4V coatings and the effect of post-spray heat treatment on their microstructure were examined. Results showed that the as-sprayed coatings presented a porous structure but with the deposition efficiency of more than 60% depending on the spray conditions. After annealing the porosities of Ti and Ti-6Al-4V coatings were apparently increased. A sound metallurgical bonding between the contact interfaces of deposited partilces was formed through atom diffusion during annealing.