Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-29T07:31:10.005Z Has data issue: false hasContentIssue false
  • English
  • Français

Plasma Sprayed Alumina-Titania Coatings

Published online by Cambridge University Press:  25 February 2011

T. J. Steeper ,
A. J. Rotolico ,
J. E. Nerz ,
W. L. Riggs II ,
D. J. Varacalle Jr  and
G. C. Wilson
T. J. Steeper
Affiliation:
Savannah River Laboratory, Aiken, SC
A. J. Rotolico
Affiliation:
Metco/Perkin-Elmer, Westbury, NY
J. E. Nerz
Affiliation:
Metco/Perkin-Elmer, Westbury, NY
W. L. Riggs II
Affiliation:
TubalCain Company, Loveland, OH
D. J. Varacalle Jr
Affiliation:
ldaho National Engineering Laboratory, EG&G Idaho, Inc., Idaho Falls, ID
G. C. Wilson
Affiliation:
ldaho National Engineering Laboratory, EG&G Idaho, Inc., Idaho Falls, ID
Get access

Abstract

This paper presents an experimental study of the air plasma spraying (APS) of alumina-titania powder using argon-hydrogen working gases. This powder system is being used in the fabrication of heater tubes that emulate nuclear fuel tubes for use in thermal-hydraulic testing. 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 in order to display the range of plasma processing conditions and their effect on the resultant coatings. The coatings were characterized by hardness and electrical tests, surface profilometry, image analysis, optical metallography, and x-ray diffraction. Coating qualities are discussed with respect to dielectric strength, hardness, porosity, surface roughness, deposition efficiency, and microstructure. Attempts are made to correlate the features of the coatings with the changes in operating parameters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 485
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Kubel, E. D., Advanced Materials and Processes, 132 (6) 69–80 (December 1987).Google Scholar
2. Render, E., “Fundamental Studies Associated With the Plasma Spray Process”- Proceedings of the National Thermal Spray Conference, (Orlando, FL, September 14–17, 1987).Google Scholar
3. Fauchais, P., “State of the Art for the Understanding of the Physical Phenomena Involved in Plasma Spraying at Atmospheric Pressure”, Proceedings of the National Thermal Spray Conference, (Orlando, FL, September 14–17, 1987).Google Scholar
4. Steeper, T. J., Varacalle, D. J. Jr, Wilson, G. C., Rotolico, A. J., Nerz, J. E., and Riggs, W.L. II, “A Taguchi Experimental Design Study of Plasma Sprayed Alumina-Titania Coatings”, Thermal Spray Coatings: Properties, Processes, and Applications, (American Society of Metals National Thermal Spray Conference, Pittsburgh, PA, May 1991).Google Scholar
5. Steeper, T. J., Varacalle, D. J. Jr, Wilson, G. C., Rotolico, A. J., Nerz, J. E., and Riggs, W. L. II, “A Design of Experiment Study of Plasma Sprayed Alumina-Titania Coatings”, Thermal Spray: International Advances in Coating Technology, (American Society of Metals International Thermal Spray Conference, Orlando, FL, June 1992).Google Scholar
6. Steeper, T. J., Varacalle, D. J. Jr, Wilson, G. C., and Berta, V. T., “Use of Thermal Spray Processes to Fabricate Heater Tubes for Use in Thermal-Hydraulic Experiments”, Thermal Spray Coatings: Properties. Processes, and Applications, (American Society of Metals National Thermal Spray Conference, Pittsburgh, PA, May 1991.Google Scholar
7. Taguchi, G. and Konishi, S., Taguchi Methods: Orthogonal Arrays and Linear Graphs, (ASI Press 1987).Google Scholar
8. Culp, R. F., SADIE, (1989).Google Scholar