Hen Wu , Hao Huang , Yu Rao , Shisheng Lin , Ping Lu
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引用次数: 0
Abstract
Amid advancing commercialization of glass-ceramics, developing novel high-performance Na2O-Al2O3-SiO2 (NAS) glass-ceramics is vital to expand industrial applications and mitigate resource supply risks. As such, this study developed a novel K2O-substituted NAS transparent glass-ceramic through controlled precipitation of a (Na, K)AlSiO4 solid solution. The effects of K2O substitution on phase selection, as well as the resulting hardness and optical properties, were systematically investigated. Increasing K2O concentration progressively enhances network connectivity and accelerates the carnegieite-to-nepheline transformation, while high-connectivity regions and site-selective nepheline precipitation further elevates Vickers hardness of both precursor glass and derived glass-ceramics (precursor glass: from 6.29 to 6.73 GPa; glass-ceramics: from 6.62 to 7.52 GPa), while high optical transmittance (∼90 %) was maintained. These findings offer a scalable and effective strategy for tailoring crystallization behavior and synergistically enhancing optical transparency and hardness properties of NAS-based transparent glass-ceramics.
期刊介绍:
The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid.
In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.