Research ArticleOpen AccessGoogle Scholar indexed
Microstructure of Plasma Sprayed Al2O3-3wt%TiO2 Coating Using Freeze Granulated Powder
Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden
Swerea IVF AB, Material Applications-Ceramics, M?lndal, Sweden
GKN Aerospace Sweden AB, Trollh?ttan, Sweden
GKN Aerospace Sweden AB, Trollh?ttan, Sweden
- 1 Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden
- 2 Swerea IVF AB, Material Applications-Ceramics, M?lndal, Sweden
- 3 GKN Aerospace Sweden AB, Trollh?ttan, Sweden
- 4 GKN Aerospace Sweden AB, Trollh?ttan, Sweden
Journal of Materials Science and Chemical Engineering·Volume 04 (2016)·Pages 8–14·Published 25 July 2016·DOI10.4236/msce.2016.47002
Copy link · social · email
Abstract
This study is aiming at controlling the microstructure of plasma sprayed Al 2 O 3 -TiO 2 composite coatings using freeze granulated powders. As sprayed and sintered Al 2 O 3 + 3wt%TiO 2 powders were air plasma sprayed with industry process parameters and compared with a commercial powder. The resulting coatings were investigated with respect to powder flowability, porosity and microstructure of the granules. The results showed that microstructure and melting fraction in the coatings could be tailored with the freeze granulation process and heat treatment conditions.
KeywordsAl2O3-TiO2Freeze GranulationPlasma SprayMicrostructure
- Ctibor, P., Bohá?, P., Stranyánek, M. and ?tvrtlík, R. (2006) Structure and Mechanical Properties of Plasma Sprayed Coatings of Titania and Alumina. J. Eur. Ceram. Soc., 26, 3509-3514. http://dx.doi.org/10.1016/j.jeurceramsoc.2005.12.018
- McPherson, R. (1989) A Review of Microstructure and Properties of Plasma Sprayed Ceramic Coatings. Surf. Coat. Technol., 39-40, 173-181. http://dx.doi.org/10.1016/0257-8972(89)90052-2
- Wang, Z.L., Finlay, W.H., Peppler, M.S. and Sweeney, L.G. (2006) Powder Formation by Atmospheric Spray- Freeze-Drying. Powder Technol., 170, 45-52. http://dx.doi.org/10.1016/j.powtec.2006.08.019
- Roychoudhary, S. and Bergman, T.L. (2004) Response of Ag-glomerated Multiceramic Particles to Intense Heating and Cooling for Thermal Plasma Spraying Simulation, Numerical Heat Transfer, Part A: Applications. Journal of Computation and Methodology, 45, 211-233.
- Goberman, D., Sohn, Y.H., Shaw, L., Jordan, E. and Gell, M. (2002) Microstructure Development of Al2O3- 13wt%TiO2 Plasma Sprayed Coatings Derived from Nanocrystalline Powders. Acta Mater., 50, 1141-152. http://dx.doi.org/10.1016/S1359-6454(01)00414-1
- Kobayashi, A., Ando, Y., Kurokawa, K. and Hejwowski, T. (2011) Microstructure and Thermal Behavior of Plasma Sprayed Zirconia/Alumina Composite Coating. J. Nanosci Nanotechnol., 11, 8853-8858. http://dx.doi.org/10.1166/jnn.2011.3450
- Shaw, L.L., Goberman, U.D., Ren, R., Gell, M., Jiang, S., Wang, Y., Xiao, T. D. and Strutt, P.R. (2000) The Dependency of Microstructure and Properties of Nanostructured Coatings on Plasma Spray Conditions. Surf. Coat. Technol., 130, 1-8. http://dx.doi.org/10.1016/S0257-8972(00)00673-3
- McPherson, R. (1980) On the Formation of Thermally Sprayed Alumina Coating. J. Mater. Sci., 15, 3141-3149. http://dx.doi.org/10.1007/BF00550387