Abstract
This article presents an experimental study of the plasma spraying of alumina- titania powder. This powder system is being used to fabricate heater tubes that emulate nuclear fuel tubes for use in thermal-hydraulic testing. Coating experiments were conducted using a Taguchi fractional- factorial design parametric study. Operating parameters were varied around the typical spray parameters in a systematic design of experiments to display the range of plasma processing conditions and their effect on the resultant coating. The coatings were characterized by hardness and electrical tests, image analysis, and optical metallography. Coating qualities are discussed with respect to dielectric strength, hardness, porosity, surface roughness, deposition efficiency, and microstructure. The attributes of the coatings are correlated with the changes in operating parameters.
Similar content being viewed by others
References
E.J. Kubel, Thermal Spraying Technology: From Art to Science,Advan. Mater. Process., Vol 132(No. 6), 1987, p 69–80
E. Pfender, Fundamental Studies Associated With the Plasma Spray Process,Thermal Spray: Advances in Coatings Technology, D.L. Houck, Ed., ASM International, 1988, p 1–10
P. Fauchais, J.F. Coudert, A.M. Vardelle, A. Grimaud, and P. Roumilhac, State of the Art for the Understanding of the Physical Phenomena Involved in Plasma Spraying at Atmospheric Pressure,Thermal Spray: Advances in Coatings Technology, D.L. Houck, Ed., ASM International, 1988, p 11–21
T.J. Steeper, A.J. Rotolico, J.E. Nerz, W.L. Riggs, D.J. Varacalle, Jr., and G.C. Wilson, A Taguchi Experimental Design Study of Plasma-Sprayed Alumina-Titania Coatings,Thermal Spray Coatings: Properties, Processes, and Applications, T.F. Bernecki, Ed., ASM International, 1992, p 13–20
T.J. Steeper, D.J. Varacalle, Jr., G.C. Wilson, and V.T. Berta, Use of Thermal Spray Processes to Fabricate Heater Tubes for Use in Thermal-Hydraulic Experiments,Thermal Spray Coatings: Properties, Processes,and Applications, T.F. Bernecki, Ed., ASM International, 1992, p 425–432
G. Taguchi and S. Konishi,Taguchi Methods: Orthogonal Arrays and Linear Graphs, ASIPress, 1987
R.F.Culp,SADIE, 1989
G.E.P. Box, W.G. Hunter, and J.S. Hunter,Statistics for Experimenters, John Wiley & Sons, 1978
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Steeper, T.J., Varacalle, D.J., Wilson, G.C. et al. A design of experiment study of plasma-sprayed alumina-titania coatings. JTST 2, 251–256 (1993). https://doi.org/10.1007/BF02650473
Issue Date:
DOI: https://doi.org/10.1007/BF02650473