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Title: Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods

Abstract

Liquidus temperature (TL) was measured for simulated high-level waste borosilicate glasses covering a Hanford composition region, using an optical method and a crystal-fraction extrapolation method with X-ray diffraction data from isothermal heat treatments. The 38 glasses encompassed a one-component-at-a-time variation of a 16-component matrix. The TL values ranged from 1006°C to 1603°C. First-order polynomial models were fitted to data to obtain coefficients in terms of the effect of 1 mass% component addition on the TL: TL-increasing oxides Cr2O3 (264°C), “Others” (minor components, 163°C), oxides of noble metals (137°C), NiO (91°C), Al2O3 and Fe2O3 (~19–21°C); TL-decreasing oxides K2O (-26°C), Na2O (-41°C), and Li2O (-68°C); oxides of little effect MnO, P2O5, ZrO2, F, Bi2O3, SiO2, B2O3, and CaO (9 to -12°C). Also presented are temperatures (T1%) at which glasses contain 1 vol% of spinel 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.

Authors:
ORCiD logo; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1421340
Report Number(s):
PNNL-SA-128799
Journal ID: ISSN 0022-3093; 830403000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Non-Crystalline Solids; Journal Volume: 483; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
crystal fraction; spinel; High-level waste (HLW); liquidus temperature

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. 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., and Peterson, Jacob A. Thu . "Liquidus temperature in the spinel primary phase field: A comparison between optical and crystal fraction methods". United States. doi:10.1016/j.jnoncrysol.2017.11.033.
@article{osti_1421340,
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 simulated high-level waste borosilicate glasses covering a Hanford composition region, using an optical method and a crystal-fraction extrapolation method with X-ray diffraction data from isothermal heat treatments. The 38 glasses encompassed a one-component-at-a-time variation of a 16-component matrix. The TL values ranged from 1006°C to 1603°C. First-order polynomial models were fitted to data to obtain coefficients in terms of the effect of 1 mass% component addition on the TL: TL-increasing oxides Cr2O3 (264°C), “Others” (minor components, 163°C), oxides of noble metals (137°C), NiO (91°C), Al2O3 and Fe2O3 (~19–21°C); TL-decreasing oxides K2O (-26°C), Na2O (-41°C), and Li2O (-68°C); oxides of little effect MnO, P2O5, ZrO2, F, Bi2O3, SiO2, B2O3, and CaO (9 to -12°C). Also presented are temperatures (T1%) at which glasses contain 1 vol% of spinel 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.},
doi = {10.1016/j.jnoncrysol.2017.11.033},
journal = {Journal of Non-Crystalline Solids},
number = C,
volume = 483,
place = {United States},
year = {Thu Mar 01 00:00:00 EST 2018},
month = {Thu Mar 01 00:00:00 EST 2018}
}