Optimizing APS ceramic coatings using response surface methods
- Idaho National Engineering Lab., Idaho Falls, ID (United States)
- Savannah River Lab., Aiken, SC (United States)
- Metco/Perkin-Elmer, Westbury, NY (United States)
- TubalCain Co., Loveland, OH (United States)
This paper presents a statistical design of experiment study of air plasma-sprayed (APS) alumina-titania powder. In this study a prior coating design has been further optimized for the effects of horizontal speed, rotational speed, and powder feed rate. The analysis was conducted using response surface methodologies. This alumina-titania powder system is being used to fabricate heater tubes that emulate nuclear fuel tubes for use in thermal-hydraulic testing. The study investigated a substantial range of plasma processing conditions and their effect on the resultant coatings. The coatings were characterized by hardness tests, electrical tests, and optical metallography (including image analysis). Coating qualities are discussed with respect to dielectric strength, hardness, porosity, surface roughness, and microstructure. Attributes of the coatings are correlated with the changes in operating parameters. The study determined an optimized coating design for this specific application.
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 160508
- Report Number(s):
- CONF-940684--; ISBN 0-87170-509-5
- Country of Publication:
- United States
- Language:
- English
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