STABILIZED RARE EARTH OXIDES FOR A CONTROL ROD AND METHOD OF PREPARATION
Abstract
A method is given for preparing mixed oxides of the formula MR/sub x/O/ sub 12/ wherein M is tungsten or molybdenum and R is a rare earth in the group consisting of samarium, europium, dysprosium, and gadolinium and x is 4 to 5. Oxides of this formula, and particularly the europiumcontaining species, are useful as control rod material for water-cooled nuclear reactors owing to their stability, favorable nuclear properties, and resistance to hydration. These oxides may be utilized as a dispersion in a stainlesssteel matrix. Preparation of these oxides is effected by blending tungsten oxide or molybdenum oxide with a rare earth oxide, compressing the mixture, and firing at an elevated temperature in an oxygen-containing atmosphere. (AEC)
- Inventors:
- Issue Date:
- Research Org.:
- Originating Research Org. not identified
- OSTI Identifier:
- 4132564
- Patent Number(s):
- 3117372
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- NSA Number:
- NSA-18-005353
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-64
- Country of Publication:
- United States
- Language:
- English
- Subject:
- CHEMISTRY; CONTROL ELEMENTS; DISPERSIONS; DYSPROSIUM OXIDES; EUROPIUM OXIDES; GADOLINIUM OXIDES; HIGH TEMPERATURE; MIXING; MOLYBDENUM OXIDES; OXIDES; OXYGEN; PREPARATION; RARE EARTHS; RODS; SAMARIUM OXIDES; STABILITY; STAINLESS STEELS; TUNGSTEN OXIDES; USES; WATER COOLANT
Citation Formats
McNees, R A, and Potter, R A. STABILIZED RARE EARTH OXIDES FOR A CONTROL ROD AND METHOD OF PREPARATION. United States: N. p., 1964.
Web.
McNees, R A, & Potter, R A. STABILIZED RARE EARTH OXIDES FOR A CONTROL ROD AND METHOD OF PREPARATION. United States.
McNees, R A, and Potter, R A. Tue .
"STABILIZED RARE EARTH OXIDES FOR A CONTROL ROD AND METHOD OF PREPARATION". United States.
@article{osti_4132564,
title = {STABILIZED RARE EARTH OXIDES FOR A CONTROL ROD AND METHOD OF PREPARATION},
author = {McNees, R A and Potter, R A},
abstractNote = {A method is given for preparing mixed oxides of the formula MR/sub x/O/ sub 12/ wherein M is tungsten or molybdenum and R is a rare earth in the group consisting of samarium, europium, dysprosium, and gadolinium and x is 4 to 5. Oxides of this formula, and particularly the europiumcontaining species, are useful as control rod material for water-cooled nuclear reactors owing to their stability, favorable nuclear properties, and resistance to hydration. These oxides may be utilized as a dispersion in a stainlesssteel matrix. Preparation of these oxides is effected by blending tungsten oxide or molybdenum oxide with a rare earth oxide, compressing the mixture, and firing at an elevated temperature in an oxygen-containing atmosphere. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1964},
month = {1}
}