Heavy ion irradiations on synthetic hollandite-type materials: Ba1.0Cs0.3A2.3Ti5.7O16 (A=Cr, Fe, Al)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Alfred Univ., NY (United States). Kazuo Inamori School of Engineering and the New York State College of Ceramics
- Savannah River National Lab (SRNL), Aiken, SC (United States). Materials Science and Technology Directorate
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Univ. of New Mexico, Albuquerque, NM (United States). TEM Lab.
The hollandite supergroup of minerals has received considerable attention as a nuclear waste form for immobilization of Cs. Here, the radiation stability of synthetic hollandite-type compounds described generally as Ba1.0Cs0.3A2.3Ti5.7O16 (A=Cr, Fe, Al) were evaluated by heavy ion (Kr) irradiations on polycrystalline single phase materials and multiphase materials incorporating the hollandite phases. Ion irradiation damage effects on these samples were examined using grazing incidence X-ray diffraction (GIXRD) and transmission electron microscopy (TEM). Single phase compounds possess tetragonal structure with space group I4/m. GIXRD and TEM observations revealed that 600 keV Kr irradiation-induced amorphization on single phase hollandites compounds occurred at a fluence between 2.5×1014 Kr/cm2 and 5×1014 Kr/cm2. The critical amorphization fluence of single phase hollandite compounds obtained by in situ 1 MeV Kr ion irradiation was around 3.25×1014 Kr/cm2. The hollandite phase exhibited similar amorphization susceptibility under Kr ion irradiation when incorporated into a multiphase system.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Savannah River National Laboratory (SRNL), Aiken, SC (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5); USDOE National Nuclear Security Administration (NNSA); Kyocera Corp., Kyoto (Japan)
- Contributing Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Grant/Contract Number:
- AC52-06NA25396; AC04-94AL85000; AC02–06CH11357
- OSTI ID:
- 1458922
- Alternate ID(s):
- OSTI ID: 1337199
- Report Number(s):
- LA-UR-15-29651; TRN: US1901522
- Journal Information:
- Journal of Solid State Chemistry, Vol. 239, Issue C; ISSN 0022-4596
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Atomistic scale investigation of cation ordering and phase stability in Cs-substituted Ba1.33Zn1.33Ti6.67O16, Ba1.33Ga2.66Ti5.67O16 and Ba1.33Al2.66Ti5.33O16 hollandite
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journal | March 2018 |
Compositional control of tunnel features in hollandite-based ceramics: structure and stability of (Ba,Cs)1.33(Zn,Ti)8O16
|
journal | September 2018 |
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