Graduate Students: Saptarshi Basu (Ph.D. Candidate), Alper Ozturk (Ph.D. in ME, 2005), Sergey Semenov (Ph.D. in ME, 2002), Weiduo Yu (Ph.D. in ME, 1999

Sponsor: Office of Naval Research (ONR) and Defense Advanced Research Project Agency (DARPA)

Project Summary

Our efforts in this project include experimental and modeling studies of plasma and flame processing of metallic and ceramic coatings. Experiments involve measurements of plasma and flame temperature fields, velocity measurements by laser Doppler anemometry, particle image velocimetry and image tracking, particle/droplet size measurements by phase Doppler anemometry. Modeling efforts include vaporization and precipitate formation in liquid ceramic precursor droplets injected into oxy-acetylene flames and DC-arc plasmas. Modeling of mass and heat transport within individual droplets is conducted to determine onset of precipitation of ceramic salts leading to different particle morphologies. More recently, our focus has shifted to generation of optically transparent ceramics and ceramic coatings.

 

Publications

Basu, S. and Cetegen, B. M. (2007), Modeling of thermo-physical processes in liquid ceramic precursor droplets heated by monochromatic irradiation, In review Journal of Heat Transfer , March 2007

Basu, S., Jordan, E. H. and Cetegen, B. M., “Fluid Mechanics and heat transfer of liquid precursor droplets injected into high temperature plasmas,” Invited paper Accepted in Journal of Thermal Spray Technology, June 2007

Maurice Gell, Eric H. Jordan, Matthew Teicholz, Baki M. Cetegen,Nitin Padture, Liangde Xie(2), Dianying Chen(2007), Thermal Barrier Coatings Made by the Solution Precursor Plasma Spray Process , In review Journal of Thermal Spray Technology , January 2007

Basu, S. and Cetegen, B. M., “Modeling of thermo-physical processes in liquid ceramic precursor droplets injected into a plasma jet,” International Journal of Heat and Mass Transfer, Vol 50, Issues 17-18, August 2007, Pages 3278-3290

Ozturk, A. and Cetegen B. M., “Modeling of precipitate formation in precursor droplets injected axially into an oxygen/acetylene combustion flame,” Material Science and Engineering A, Vol. 422/1-2 pp 163-175, April 2006

Xie, L., Chen, D., Ozturk, A., Wu, F., Ma, X., Jordan, E. H., Padture, N.P., Cetegen, B.M. and Gell, M., “Formation of Vertical Cracks in Solution-Precursor Plasma-Sprayed Thermal Barrier Coatings, “to appear in Surface and Coatings Technology, 2006

Ozturk, A. and Cetegen B. M., “Experiments on ceramic formation from liquid precursor spray axially injected into an oxy-acetylene flame,” Acta Materialia, Vol. 53, pp. 5203 – 5211, 2005

Ozturk, A. and Cetegen B. M., “Modeling of axially and transversely injected precursor droplets into a plasma environment,” International Journal of Heat and Mass Transfer, Vol. 48, No. 21-22, pp. 4367-4383, 2005

Ozturk, A. and Cetegen, B. M., “Morphology of ceramic particulates formed in a premixed oxygen/acetylene flame from mono-size liquid precursor droplets,” Acta Materialia, Vol. 53, pp. 2531-2544, 2005

Ozturk, A. and Cetegen, B. M., “Modeling of plasma assisted formation of ytrria stabilized zirconia from liquid precursors,” Materials Science and Engineering A, Vol. 384, pp. 331-351, 2004

Jordan, E. H., Xie, L., Ma, X., Gell, M., Padture, N. P., Cetegen, B. M., Ozturk, A., Roth, J., Xiao, T. D., Bryant, P. E., “Superior thermal barrier coatings using solution precursor plasma spray,” Journal of Thermal Spray Technology, Vol. 13(1), pp. 57-65, March 2004

Xie, L., Ma, X., Ozturk, A., Jordan, E. H., Padture, N., Cetegen, B. M., Xiao, T. D. and Gell, M., “Processing parameter effects on solution plasma spray process spray patterns,” Surface and Coatings Technology, Vol. 183, No. 1, p. 51-61, 2004

Zhang, Y. D., Ma, X. Q., Hui, S., Wu, M., Ge, S. H., Hines, W. A., Budnick, J. I. Cetegen, B. M. and Semenov, S. Y., “Structure and magnetic properties of NIFe/SiO2 and Co/SiO2 nano-composites consolidated by detonation compaction,” Journal of Applied Physics, Vol. 93, No. 10, pp. 6969 – 6971, May 2003

Cetegen, B. M., Semenov, S. Y. and Goberman, D., “Deposition of multi-layered, nano-structured alumina-titania coatings by detonation waves,” Scripta Materialia, Vol. 48, No. 10, pp. 1483-1488, 2003

Bhatia, T. , Ozturk, A., Xie, L., Jordan, E., Cetegen, B. M., Gell, M., Ma, X., Padture, N.,“Mechanisms of Ceramic Coating Deposition in Solution-Precursor Plasma Spray,” Journal of Materials Research, Vol. 17, No. 9, pp. 2363 – 2372, 2002

Semenov, S. Y. and Cetegen, B. M., “Experiments and modeling of the deposition of nano-structured alumina-titania coatings by detonation waves,” Materials Science and Engineering A, Vol. 335/1-2, pp. 69-82, 2002

Padture, N. P., Schlichting, K. W., Bhatia, T., Ozturk, A., Cetegen, B. M., Jordan, E. H., and Gell, M., “Towards Durable Thermal Barrier Coatings with Novel Microstructures Deposited by Solution-Precursor Plasma Spray,” Acta Materialia, Vol. 49, pp. 2251 – 2257, 2001

Semenov, S. Y. and Cetegen, B. M., “Spectroscopic temperature measurements in DC-arc plasma jets utilized in thermal spray processing of materials,” Journal of Thermal Spray Technology,Vol. 10 (2), pp. 326-336, 2001

Cetegen, B. M. and W. Yu, “Simultaneous particle temperature, velocity and size measurements in HVOF Thermal Sprays,” Journal of Thermal Spray Technology, Vol. 8 (1), pp. 57 -67, March 1999