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Title: PREPARATION OF REFRACTORY OXIDE CRYSTALS

Abstract

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)

Inventors:
; ;
Issue Date:
OSTI Identifier:
4764289
Patent Number(s):
3063794
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
NSA Number:
NSA-17-003416
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Grimes, W R, Shaffer, J H, and Watson, G M. PREPARATION OF REFRACTORY OXIDE CRYSTALS. United States: N. p., 1962. Web.
Grimes, W R, Shaffer, J H, & Watson, G M. PREPARATION OF REFRACTORY OXIDE CRYSTALS. United States.
Grimes, W R, Shaffer, J H, and Watson, G M. Tue . "PREPARATION OF REFRACTORY OXIDE CRYSTALS". United States.
@article{osti_4764289,
title = {PREPARATION OF REFRACTORY OXIDE CRYSTALS},
author = {Grimes, W R and Shaffer, J H and Watson, G M},
abstractNote = {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)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1962},
month = {11}
}