Accelerated Alpha Radiation Damage In A Ceramic Waste Form Interim Results
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Author | : |
Publisher | : |
Total Pages | : 9 |
Release | : 1999 |
Genre | : |
ISBN | : |
Interim results are presented on the alpha-decay damage study of a 238Pu-loaded ceramic waste form (CWF). The waste form was developed to immobilize fission products and transuranic species accumulated from the electrometallurgical treatment of spent nuclear fuel. To evaluate the effects of [alpha]-decay damage on the waste form the 238Pu-loaded material was analyzed by (1) x-ray diffraction (XRD), (2) microstructure characterization by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) with energy and wavelength dispersive spectroscopy (EDS/WDS) and electron diffraction, (3) bulk density measurements and (4) waste form durability, performed by the product consistency test (PCT). While the predominate phase of plutonium in the CWF, PuO2, shows the expected unit cell expansion due to [alpha]-decay damage, currently no significant change has occurred to the macro- or microstructure of the material. The major phase of the waste form is sodalite and contains very little Pu, although the exact amount is unknown. Interestingly, measurement of the sodalite phase unit cell is also showing very slight expansion; again, presumably from [alpha]-decay damage.
Author | : Gary L. Smith |
Publisher | : John Wiley & Sons |
Total Pages | : 389 |
Release | : 2012-03-28 |
Genre | : Technology & Engineering |
ISBN | : 1118371453 |
Composed from two symposia conducted at the 2001 Annual Meeting of The American Ceramic Society, this new volume details the advances in the state of knowledge in nuclear and waste materials science and technology. Highlighted are areas of rapid change such as in the application, development, and testing of ceramics and glasses in the nuclear and waste industries. As companies begin to focus on ¿green ceramics¿ and the manufacturing of environmentally friendly products, the development of innovative processing approaches and novel environmental treatment technologies soon follows. These are being developed to address more stringent regulations and to obtain an improved scientific understanding of the industrial processes and treatment technologies. This seventh volume in the series addresses current nuclear and environmental problems and provides solutions for them. It is an excellent resource for researchers and scientists involved in the ceramic and nuclear industries. roceedings of the symposium held at the 103rd Annual Meeting of The American Ceramic Society, April 22-25, 2001, in Indiana; Ceramic Transactions, Volume 132.
Author | : W. Sinkler |
Publisher | : |
Total Pages | : 11 |
Release | : 2004 |
Genre | : Alpha decay |
ISBN | : |
Radiation damage from the decay of actinide containing phases in ceramic waste forms can reduce their mechanical integrity and chemical durability. In order to understand the radiation damage and predict long-term degradation behavior of the ceramic waste forms in a repository, a short-lived actinide can be loaded into the ceramic waste form to accelerate the damage process. In the current study, a 238Pu (half-life of 87.7 years) doped ceramic waste form was fabricated by uniaxial hot pressing. The starting materials are 75 volume percent salt occluded zeolite and 25 volume percent binding glass. After consolidation, the final product has sodalite and glass as the major constituents, while halite, nepheline and actinide containing phases are minor phases. After three years, density measurements, scanning electron microscopy, and seven-day product consistency tests all reveal little or no change. Bubbles/voids have been found by transmission electron microscopy. No defect-segregation was observed. Although X-ray diffraction shows a very small unit cell expansion in PuO2 and sodalite, micro-cracking and interface debonding were not observed. Preliminary results show that the electron beam dose required to amorphize sodalite decreases with increasing alpha decay dose.
Author | : |
Publisher | : |
Total Pages | : 1010 |
Release | : 2004 |
Genre | : Glass waste |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 440 |
Release | : 2001 |
Genre | : Ceramic industries |
ISBN | : |
Consists of proceedings of various symposia held during the Annual Meeting of the American Ceramic Society.
Author | : John D. Vienna |
Publisher | : John Wiley & Sons |
Total Pages | : 271 |
Release | : 2012-04-11 |
Genre | : Technology & Engineering |
ISBN | : 1118408446 |
These proceedings capture advances in the state of knowledge in nuclear and waste materials science and technology. In addition, the proceedings addresses the environmental issues associated with ceramic processing. Included are the status of environmental issues and their solutions, both current and proposed.
Author | : Martin L. Grossbeck |
Publisher | : ASTM International |
Total Pages | : 767 |
Release | : 2004 |
Genre | : Materials |
ISBN | : 0803134770 |
Author | : |
Publisher | : |
Total Pages | : 620 |
Release | : 1990 |
Genre | : Power resources |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 308 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 232 |
Release | : |
Genre | : |
ISBN | : 1422345653 |