The influence of glass composition on crystalline phase stability in glass-ceramic wasteforms
Source abstract
Abstract
Zirconolite glass-ceramic wasteforms were prepared using a suite of Na2O–Al2O3–B2O3–SiO2 glass matrices with variable Al:B ratios. Zirconolite was the dominant crystalline phase only for the most alumina rich glass compositions. As the Al:B ratio decreased zirconolite was replaced by sphene, zircon and rutile. Thermodynamic data were used to calculate a silica activity in the glass melt below which zirconolite is the favoured crystalline phase. The concept of the crystalline reference state of glass melts is then utilised to provide a physical basis for why silica activity varies with the Al:B ratio.
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Research context
OpenAlex topics: Nuclear materials and radiation effects · Glass properties and applications · Recycling and utilization of industrial and municipal waste in materials production
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
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