DEVELOPMENT OF CLAD CERAMIC FUEL PLATES BY SPRAY-COATING TECHNIQUES. Quarterly Technical Progress Report, January-March 1961

Technical Report · Tue Oct 31 00:00:00 EST 1961

DOI:https://doi.org/10.2172/4028917· OSTI ID:4028917

The development of plasma-jet spray-coating techniques for producing clad ceramic fuel plates is discussed. Conditions for spraying fused UO/sub 2/ powder were established by depositing cones on stationary substrates. It was found that the arc-gas flow range within which deposition occurs is very narrow. Coatings were made from --200 +325, --270 + 325, and de-slimed -325 mesh fused UO/ sub 2/ powders. To provide data regarding the economics of the process, deposition rates and efficiencies were determined under various conditions. The effects of powder size, power input, arcgas flow rate, spray distance, traverse rate, power feed rate, powder-gas flow rate, and cover-gas flow rate on deposition efficiency are discussed. Oxygen-to-uranium ratios of coatings made for evaluation of density were determined by gravimetric and volumetric methods. Preparation of the surface without distortion for plasma spraying is discussed. Fixturing and instrumentation methods were designed for measuring substrate and coating temperatures during spraying of typical fuel-element-cladding thickesses of stainless steel and Zircaloy-2. (M.C.G.)

• Research Organization: Advanced Technology Labs. Div. of American-Standard, Mountain View, Calif.
• DOE Contract Number: AT(04-3)-250
• NSA Number: NSA-15-016007
• OSTI ID: 4028917
• Report Number(s): ATL-A-117; EURAEC-64
• Resource Relation: Other Information: Project Agreement No. 4. Orig. Receipt Date: 31-DEC-61
• Country of Publication: United States
• Language: English

Related Subjects

METALS, CERAMICS, AND OTHER MATERIALS
COATING
DENSITY
DISTRIBUTION
ECONOMICS
EFFICIENCY
ELECTRIC ARCS
FUEL ELEMENTS
GAS FLOW
GRAIN SIZE
JETS
MEASURED VALUES
OXYGEN
PLASMA
PLATES
POWDERS
PREPARATION
QUANTITATIVE ANALYSIS
SPUTTERING
STAINLESS STEELS
SURFACES
TEMPERATURE
THICKNESS
URANIUM
URANIUM DIOXIDE
ZIRCALOY