Gadolinium Solubility in Peralkaline Borosilicate Glasses

Journal Article · Thu May 03 04:00:00 EDT 2001 · Journal of Non-crystalline Solids, 283(1-3):237-245

DOI:https://doi.org/10.1016/S0022-3093(00)00441-5· OSTI ID:1025703

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

Lanthanide-containing glasses, commonly used for optical and laser applications, are also important in the vitrification of actinide-bearing radioactive wastes. In order to study the effect of glass composition on the solubility of gadolinium, 25 peralkaline (Na/Al >1) borosilicate glasses were studied. Above Gd solubility, liquid-liquid phase separation was found in the glasses with Na/B less than 0.5; and in the glasses with Na/B more than 0.5, crystallization was found. For the samples from which liquid-liquid phase separation was observed, Gd solubility was mostly decided by the concentration of excess Na (e.g. Na-Al). Increasing excess Na will increase Gd solubility. For the samples from which crystallization was observed, Gd solubility was decided by the concentration of B, Si, and Al. Increasing B and Si will increase Gd solubility, but increasing Al will decrease Gd solubility. The solution mechanism of Gd in peralkaline borosilicate glasses is also discussed.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1025703
• Report Number(s): PNNL-SA-32651; KP1301020
• Journal Information: Journal of Non-crystalline Solids, 283(1-3):237-245, Journal Name: Journal of Non-crystalline Solids, 283(1-3):237-245 Journal Issue: 1-3 Vol. 281; ISSN 0022-3093
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
BOROSILICATE GLASS
CRYSTALLIZATION
GADOLINIUM
GLASS
LASERS
RADIOACTIVE WASTES
SOLUBILITY
VITRIFICATION
glass
lanthanide solubility
radioactive material