Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods
Abstract
Liquidus temperature (TL) was measured for 38 simulated high-level waste borosilicate glasses covering a Hanford composition region, using optical microscopy and crystal-fraction extrapolation methods to analyze isothermally heat-treated specimens. Furthermore, the glasses encompassed a one-component-at-a-time variation of 16 components from a representative Hanford HLW simulant baseline composition. The TL values ranged from 1006 °C to 1603 °C. First-order models were fit to data to obtain component effects on TL (per 1 mass% additions) and then the components were grouped into three categories: TL-increasing components [i.e., Cr2O3 (264 °C), “Others” (minor components, 163 °C), oxides of noble metals (137 °C), NiO (91 °C), as well as Al2O3 and Fe2O3 (~ 19–21 °C)]; TL-decreasing components [i.e., K2O (-26 °C), Na2O (-41 °C), and Li2O (-68 °C)]; and those of little effect [i.e., MnO, P2O5, ZrO2, F, Bi2O3, SiO2, B2O3, and CaO (9 to -12 °C)]. We also present the temperatures at which 1 vol% of spinel is at equilibrium with the melt (T1%) as these values are considered relevant to the Hanford Tank Waste Treatment and Immobilization Plant. The measured and estimated values are compared and contrasted and the effect of TL and T1% on glass formulation is discussed. The different methodsmore »
- Publication Date:
- Research Org.:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Environmental Management (EM)
- OSTI Identifier:
- 1416963
- Alternate Identifier(s):
- OSTI ID: 1691916
- Report Number(s):
- PNNL-SA-128799
Journal ID: ISSN 0022-3093; PII: S0022309317306373; TRN: US1800978
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Non-Crystalline Solids
- Additional Journal Information:
- Journal Volume: 483; Journal ID: ISSN 0022-3093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; liquidus temperature; crystal fraction; spinel; high-level waste
Citation Formats
Riley, Brian J., Hrma, Pavel, Crum, Jarrod V., Vienna, John D., Schweiger, Michael J., Rodriguez, Carmen P., and Peterson, Jacob A.. Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods. United States: N. p., 2018.
Web. doi:10.1016/J.JNONCRYSOL.2017.11.033.
Riley, Brian J., Hrma, Pavel, Crum, Jarrod V., Vienna, John D., Schweiger, Michael J., Rodriguez, Carmen P., & Peterson, Jacob A.. Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods. United States. https://doi.org/10.1016/J.JNONCRYSOL.2017.11.033
Riley, Brian J., Hrma, Pavel, Crum, Jarrod V., Vienna, John D., Schweiger, Michael J., Rodriguez, Carmen P., and Peterson, Jacob A.. Thu .
"Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods". United States. https://doi.org/10.1016/J.JNONCRYSOL.2017.11.033. https://www.osti.gov/servlets/purl/1416963.
@article{osti_1416963,
title = {Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods},
author = {Riley, Brian J. and Hrma, Pavel and Crum, Jarrod V. and Vienna, John D. and Schweiger, Michael J. and Rodriguez, Carmen P. and Peterson, Jacob A.},
abstractNote = {Liquidus temperature (TL) was measured for 38 simulated high-level waste borosilicate glasses covering a Hanford composition region, using optical microscopy and crystal-fraction extrapolation methods to analyze isothermally heat-treated specimens. Furthermore, the glasses encompassed a one-component-at-a-time variation of 16 components from a representative Hanford HLW simulant baseline composition. The TL values ranged from 1006 °C to 1603 °C. First-order models were fit to data to obtain component effects on TL (per 1 mass% additions) and then the components were grouped into three categories: TL-increasing components [i.e., Cr2O3 (264 °C), “Others” (minor components, 163 °C), oxides of noble metals (137 °C), NiO (91 °C), as well as Al2O3 and Fe2O3 (~ 19–21 °C)]; TL-decreasing components [i.e., K2O (-26 °C), Na2O (-41 °C), and Li2O (-68 °C)]; and those of little effect [i.e., MnO, P2O5, ZrO2, F, Bi2O3, SiO2, B2O3, and CaO (9 to -12 °C)]. We also present the temperatures at which 1 vol% of spinel is at equilibrium with the melt (T1%) as these values are considered relevant to the Hanford Tank Waste Treatment and Immobilization Plant. The measured and estimated values are compared and contrasted and the effect of TL and T1% on glass formulation is discussed. The different methods for measuring TL are compared and contrasted.},
doi = {10.1016/J.JNONCRYSOL.2017.11.033},
journal = {Journal of Non-Crystalline Solids},
number = ,
volume = 483,
place = {United States},
year = {2018},
month = {1}
}
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Figures / Tables:
Table 1: Target compositions of all glasses in mass% [24]. The “Others” column includes BaO, CdO, MgO, PbO, PdO, Rh2O3, RuO2, SO3, SrO, TiO2, ZnO, Ce2O3, La2O3, and Nd2O3 (see Table 2 for a breakdown of "Others" components with compositional ranges). *EM07-BL-2, not listed in the table, had the samemore »
Figures / Tables found in this record: