Dissolution and growth of spinel crystals in a borosilicate glass

Journal Article · Sat Jun 01 00:00:00 EDT 2002 · Journal of Non-crystalline Solids

DOI:https://doi.org/10.1016/S0022-3093(02)01325-X· OSTI ID:15001807

Alton, Jesse ^[1]; Plaisted, Trevor J ^[1]; Hrma, Pavel R ^[2]

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1. ASSOC WESTERN UNIVERSITY
2. BATTELLE (PACIFIC NW LAB)

The rate of dissolution and growth of settling crystals of spinel was measured optically in a borosilicate melt that was pre-heated at a temperature above liquidus to erase the effects of previous history. The Hixson-Crowell equation, which is based on Fick's first law, was used to determine mass-transfer coefficients (kH) for dissolution and growth; both were found to fit the same Arrhenius function of temperature (T). An attempt was made to estimate the diffusion coefficient (D) and the concentration-boundary-layer thickness (d). The calculated values of d compared well with experimental results and observations. The D vs. T function was similar to a literature function obtained for the dissolution of magnetite in sodium disilicate glass.

• Research Organization: Pacific Northwest National Lab., Richland, WA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 15001807
• Report Number(s): PNNL-SA-31771; KP1301020; TRN: US200406%%230
• Journal Information: Journal of Non-crystalline Solids, Vol. 311; Other Information: PBD: 1 Jun 2002
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BOROSILICATE GLASS
DISSOLUTION
CRYSTAL GROWTH
MAGNETITE
MASS TRANSFER
SODIUM SILICATES
SPINELS
WASTE FORMS
HIGH-LEVEL RADIOACTIVE WASTES