Ceramic and cermet targets
Abstract
Use of isotopic materials as targets in high temperature environments, e.g., reactor cores, require that chemically stable forms of the isotopes be employed. Usually oxides are compatible with temperatures > 1600/sup 0/K, although some light element oxides exhibit some volatility at temperatures > 1300/sup 0/K. Especially in the case of heavy elements, the relatively low melting points of the metals, poor compatibility of the metals with encapsulation materials, and high chemical reactivity at moderate temperatures preclude the use of metal targets. However, encapsulation of ceramic targets has been successfully performed yielding high integrity samples. If hydrogen-reducible metals are mixed with the isotope(s), malleable, high strength, corrosion resistant targets can be rolled which contain a ceramic phase of isotope oxide. Isotope dilutions, additions of metals to form the metal matrix of a cermet target, and subsequent homogenization of all components are performed by dissolution in molten urea followed by calcination and compaction into the desired target form.
- Authors:
- Publication Date:
- Research Org.:
- Oak Ridge National Lab., TN (USA)
- OSTI Identifier:
- 5373104
- Report Number(s):
- CONF-7910119-3
TRN: 80-008665
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Conference
- Resource Relation:
- Conference: 8. annual conference of the I.N.T.D.S., Boston, MA, USA, 1 Oct 1979
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; MAGNESIUM OXIDES; EXTRUSION; HOT PRESSING; NEUTRON DOSIMETRY; FABRICATION; PLUTONIUM DIOXIDE; CERAMICS; CERMETS; ENCAPSULATION; NEUTRON FLUX; NITRIC ACID; PLUTONIUM 239; POWDER METALLURGY; SINTERING; UREA; VANADIUM; WIRES; ACTINIDE COMPOUNDS; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALKALINE EARTH METAL COMPOUNDS; ALPHA DECAY RADIOISOTOPES; AMIDES; CARBONIC ACID DERIVATIVES; CHALCOGENIDES; COMPOSITE MATERIALS; DOSIMETRY; ELEMENTS; EVEN-ODD NUCLEI; HEAVY NUCLEI; HYDROGEN COMPOUNDS; INORGANIC ACIDS; ISOTOPES; MAGNESIUM COMPOUNDS; MATERIALS; MATERIALS WORKING; METALLURGY; METALS; NUCLEI; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; PLUTONIUM ISOTOPES; PLUTONIUM OXIDES; PRESSING; RADIATION FLUX; RADIOISOTOPES; TRANSITION ELEMENTS; TRANSURANIUM COMPOUNDS; YEARS LIVING RADIOISOTOPES; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication; 440102 - Radiation Instrumentation- Radiation Dosemeters
Citation Formats
Kobisk, E H, Quinby, T C, and Aaron, W S. Ceramic and cermet targets. United States: N. p., 1979.
Web.
Kobisk, E H, Quinby, T C, & Aaron, W S. Ceramic and cermet targets. United States.
Kobisk, E H, Quinby, T C, and Aaron, W S. 1979.
"Ceramic and cermet targets". United States. https://www.osti.gov/servlets/purl/5373104.
@article{osti_5373104,
title = {Ceramic and cermet targets},
author = {Kobisk, E H and Quinby, T C and Aaron, W S},
abstractNote = {Use of isotopic materials as targets in high temperature environments, e.g., reactor cores, require that chemically stable forms of the isotopes be employed. Usually oxides are compatible with temperatures > 1600/sup 0/K, although some light element oxides exhibit some volatility at temperatures > 1300/sup 0/K. Especially in the case of heavy elements, the relatively low melting points of the metals, poor compatibility of the metals with encapsulation materials, and high chemical reactivity at moderate temperatures preclude the use of metal targets. However, encapsulation of ceramic targets has been successfully performed yielding high integrity samples. If hydrogen-reducible metals are mixed with the isotope(s), malleable, high strength, corrosion resistant targets can be rolled which contain a ceramic phase of isotope oxide. Isotope dilutions, additions of metals to form the metal matrix of a cermet target, and subsequent homogenization of all components are performed by dissolution in molten urea followed by calcination and compaction into the desired target form.},
doi = {},
url = {https://www.osti.gov/biblio/5373104},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1979},
month = {Mon Jan 01 00:00:00 EST 1979}
}