Origins of Discrepancies Between Kinetic Rate Law Theory and Experiments in the Na2O-B2O3-SiO2 System

Conference · Mon Jul 01 00:00:00 EDT 2002

OSTI ID:15007322

McGrail, B Peter; Icenhower, Jonathan P; Cordova, Elsa A

Discrepancies between classical kinetic rate law theory and experiment were quantitatively assessed and found to correlate with macromolecular amorphous separation in the sodium borosilicate glass system. A quantitative reinterpretation of static corrosion data and new SPFT data shows that a recently advanced protective surface layer theory fails to describe the observed dis-solution behavior of simple and complex silicate glasses under carefully controlled experimental conditions. The hypothesis is shown to be self-inconsistent in contrast with a phase separation model that is in quantitative agreement with experiments.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 15007322
• Report Number(s): PNNL-SA-37364; 830403000; TRN: US0401640
• Resource Relation: Conference: Scientific basis for nuclear waste management XXV: Symposium held November 26-29, 2001, Boston, Massachusetts, USA, 713:537-546
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BOROSILICATE GLASS
CORROSION
DISSOLUTION
HYPOTHESIS
KINETICS
MANAGEMENT
RADIOACTIVE WASTES
SILICATES
SODIUM
glass
phase separation
dissolution
transition state