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Title: 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 DTIE; NSA-18-005353
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}
}