Quantitative X-ray diffraction analysis of titanate waste forms and its application to damage ingrowth

Conference · Fri Dec 31 00:00:00 EST 1993

OSTI ID:62195

White, T J ^[1]; Mitamura, H ^[2]

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1. Univ. of Queensland, Brisbane (Australia)
2. Japan Atomic Energy Research Institute, Tokai-mura (Japan)

Quantitative powder X-ray diffraction was used to analyze the phase assemblages of titanate nuclear waste ceramics doped with {sup 224}Cm and accumulating {alpha}-decay doses up to 1.24 {times} 10{sup 18} alpha-decay-events g{sup -1}. Among the Cm-bearing phases, perovskite is more susceptible to damage than zirconolite. Phases devoid of curium (hollandite and freudenbergite) experience a flux of ionizing radiation, and may also undergo radiation-induced structural degradation. The analysis demonstrated that a dose of 1.24 {times} 10{sup 18} alpha-decay-events g{sup -1} approximately 20 wt% of the waste phases remain aperiodic after annealing for 2 hours at 800{degrees}C.

• OSTI ID: 62195
• Report Number(s): CONF-921101-Vol.294; TRN: 95:002922-0011
• Resource Relation: Conference: 16. Materials Research Society (MRS) fall meeting, Boston, MA (United States), 30 Nov - 5 Dec 1992; Other Information: PBD: 1993; Related Information: Is Part Of Scientific basis for nuclear waste management XVI; Interrante, C.G. [ed.] [Nuclear Regulatory Commission, Washington, DC (United States)]; Pabalan, R.T. [ed.] [Southwest Research Inst., San Antonio, TX (United States)]; PB: 959 p.
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
36 MATERIALS SCIENCE
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE PROCESSING
TITANATES
X-RAY DIFFRACTION
CERAMICS
WASTE FORMS
STABILITY
CHEMICAL COMPOSITION
ANNEALING
PEROVSKITE
ZIRCONOLITE