Journal of Non-Crystalline Solids· 2026Q2
Three-stage densification behavior and sintering–crystallization coupling mechanism in PSBNT glass-ceramics
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- 2026year
Short summary
A three-stage densification process (rapid, plateau, reactivation) was identified in PSBNT glass-ceramics, driven by the interplay between viscous flow, pore evolution, crystallization, and glass network structure.
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Key points
- PSBNT glass-ceramics exhibit a three-stage densification process: rapid densification, a plateau, and reactivation.
- The crystalline phase evolution is dominated by the tungsten bronze (T.T.B.) structure.
- Raman analysis shows temperature-dependent changes in the glass network polymerization.
- The Clusters model explains the three-stage densification as a result of interplay among viscous flow, pore evolution, crystallization, and glass network structure.
AI-generated from the title and abstract; the full text is not read.
Abstract
Crystallization and densification play critical roles during the sintering of energy-storage glass-ceramics, jointly determining the phase composition, microstructure, and ultimately the functional properties of the materials. In this study, a niobate-based glass-ceramic system was selected as a representative model and prepared via powder sintering. The crystallization behavior, densification evolution, microstructure, and glass network structure were systematically investigated. A distinct three-stage densification process was identified, including rapid densification, a plateau stage, and reactivation at elevated temperatures. The evolution of crystalline phases, dominated by the tungsten bronze (T.T.B.) structure, was quantitatively analyzed. Raman analysis revealed temperature-dependent variations in glass network polymerization. Based on the Clusters model, the interplay among viscous flow, pore evolution, crystallization, and glass network structure was identified as the key factor governing the three-stage densification behavior.
The authors' abstract, as published at the source. Journal of Non-Crystalline Solids, 2026 · DOI ↗
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Field: Ceramics and Composites
Ceramics and CompositesMaterials Science