K2O对Na2O-Al2O3-SiO2透明微晶玻璃结晶行为和硬度性能的影响

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-09-26 DOI:10.1016/j.jnoncrysol.2025.123787

Hen Wu , Hao Huang , Yu Rao , Shisheng Lin , Ping Lu

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引用次数: 0

摘要

随着微晶玻璃商业化的推进，开发新型高性能na20 - al2o3 - sio2 （NAS）微晶玻璃对于扩大工业应用和降低资源供应风险至关重要。因此，本研究通过控制（Na， K）AlSiO4固溶体的沉淀，开发了一种新型的k2o取代的NAS透明玻璃陶瓷。系统地研究了K2O取代对相选择、硬度和光学性能的影响。K2O浓度的增加逐渐增强了网络连通性，加速了碳化石向霞石的转变，而高连通性区域和定点选择性霞石的沉淀进一步提高了前体玻璃和衍生的微晶玻璃的维氏硬度（前体玻璃从6.29到6.73 GPa，微晶玻璃从6.62到7.52 GPa），同时保持了高透光率（~ 90%）。这些发现为调整结晶行为和协同提高nas基透明玻璃陶瓷的光学透明度和硬度性能提供了一种可扩展和有效的策略。

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Effect of K2O on the crystallization behavior and hardness properties of Na2O-Al2O3-SiO2 transparent glass-ceramics

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.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

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.