PREPARATION OF REFRACTORY OXIDE CRYSTALS

Patent · Tue Nov 13 00:00:00 EST 1962

OSTI ID:4764289

Grimes, W R; Shaffer, J H; Watson, G M

A method is given for preparing uranium dioxide, thorium oxide, and beryllium oxide in the form of enlarged individual crystals. The surface of a fused alkali metal halide melt containing dissolved uranium, thorium, or beryllium values is contacted with a water-vapor-bearing inert gas stream at a rate of 5 to 10 cubic centimeters per minute per square centimeter of melt surface area. Growth of individual crystals is obtained by prolonged contact. Beryllium oxide-coated uranium dioxide crystals are prepared by disposing uranium dioxide crystals 5 to 20 microns in diameter in a beryllium-containing melt and contacting the melt with a water-vapor-bearing inert gas stream in the same manner. (AEC)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-003416
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 3063794
• OSTI ID: 4764289
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: United States
• Language: English

Related Subjects

METALS, CERAMICS, AND OTHER MATERIALS
ALKALI METALS
BERYLLIUM
BERYLLIUM OXIDES
COATING
CRYSTALS
EXPANSION
FUSED SALTS
GAS FLOW
HALIDES
INERT GASES
MELTING
OXIDES
PREPARATION
REFRACTORIES
SOLUTIONS
SURFACES
THICKNESS
THORIUM
THORIUM OXIDES
URANIUM
URANIUM DIOXIDE
VAPORS
VELOCITY
WATER