Isothermal crystallization kinetics in simulated high-level nuclear waste glass

Conference · Wed Dec 31 00:00:00 EST 1997

OSTI ID:572003

Vienna, J D; Hrma, P; Smith, D E ^[1]

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1. Pacific Northwest National Lab., Richland, WA (United States)

Crystallization kinetics of a simulated high-level waste (HLW) glass were measured and modelled. Kinetics of acmite growth in the standard HW39-4 glass were measured using the isothermal method. A time-temperature-transformation (TTT) diagram was generated from these data. Classical glass-crystal transformation kinetic models were empirically applied to the crystallization data. These models adequately describe the kinetics of crystallization in complex HLW glasses (i.e., RSquared = 0.908). An approach to measurement, fitting, and use of TTT diagrams for prediction of crystallinity in a HLW glass canister is proposed.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 572003
• Report Number(s): CONF-961202-; TRN: 98:003678
• Resource Relation: Conference: 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996; Other Information: PBD: 1997; Related Information: Is Part Of Scientific basis for nuclear waste management XX; Gray, W.J. [ed.] [Pacific Northwest National Lab., Richland, WA (United States)]; Triay, I.R. [ed.] [Los Alamos National Lab., NM (United States)]; PB: 1389 p.; Materials Research Society symposium proceedings, Volume 465
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
05 NUCLEAR FUELS
GLASS
WASTE FORMS
CRYSTALLIZATION
HIGH-LEVEL RADIOACTIVE WASTES
MATHEMATICAL MODELS
PHASE TRANSFORMATIONS
KINETICS