Gadolinium Solubility in Peraluminous Borosilicate Glasses

Journal Article · Mon Mar 05 04:00:00 EST 2001 · Journal of Non-crystalline Solids, 281(1-3):189-197

DOI:https://doi.org/10.1016/S0022-3093(99)00879-0· OSTI ID:15001191

Li, Liyu; Li, Hong; Qian, Maoxu; Strachan, Denis M

This paper discussed the results of a study, using 18 peraluminous (Na/Al <1) borosilicate glasses, to understand the effect of glass composition on gadolinium solubility. Above Gd solubility, liquid-liquid phase separation occurs in some of the glasses; in others, sodium gadolinium silicate crystallizes. For the samples in which liquid-liquid phase separation occurs, Gd solubility is determined by the concentration of excess Al (i.e., [AlO1.5]-[NaO0.5]-0.2*[BO1.5]). Increasing excess Al increases Gd solubility. For the samples in which sodium gadolinium silicate crystallizes, Gd solubility is determined by the concentration of Na. Increasing Na decreases Gd solubility. When the Al concentration in the baseline glass is high, a minimum amount of Gd is needed to form a clear glass. Otherwise, mullite crystallizes. The minimum concentration of Gd is determined by the [AlO1.5]-[NaO0.5]-[BO1.5] value in the melt. The higher this value is, the more Gd is needed to form a clear glass. In general, the solution behavior of Gd in peraluminous borosilicate melt is similar to that in peralkaline borosilicate melt, and is mostly determined by the ratio of excess Al to equivalent B in the melt.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 15001191
• Report Number(s): PNNL-SA-32767; KP1301020
• Journal Information: Journal of Non-crystalline Solids, 281(1-3):189-197, Journal Name: Journal of Non-crystalline Solids, 281(1-3):189-197 Journal Issue: 1-3 Vol. 281
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
BOROSILICATE GLASS
CRYSTALLIZATION
GADOLINIUM
MULLITE
PHASE STUDIES
SODIUM OXIDES
SOLUBILITY
crystallization
glass
lanthanide
solubility