Hybridization Engineering of Oxyfluoride Aluminosilicate Glass for Construction of Dual-Phase Optical Ceramics,Advanced Materials

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Hybridization Engineering of Oxyfluoride Aluminosilicate Glass for Construction of Dual-Phase Optical Ceramics
Advanced Materials ( IF 27.4 ) Pub Date : 2022-12-28 , DOI: 10.1002/adma.202205578
Guanxin Du _{1,

2} , Shaofei Wen _{1,

2} , Junjie Zhao ₃ , Peng Ran _{4,

5} , Dazhao Wang _{1,

2} , Lei Wei ₆ , Xvsheng Qiao ₃ , Yang Yang _{4,

5} , Jianrong Qiu ₄ , Shifeng Zhou _{1,

2}

Affiliation

The construction of transparent ceramics under mild conditionsand standard atmospheric pressure has great scientific and technological potential; however, it remains difficult to achieve when conventional ceramic sintering techniques are used. Herein, a mild strategy for constructing dual-phase optical ceramics with high crystallinity (>90%) based on the stepped dual-phase crystallization of hybridized aluminosilicate glass is presented. Theoretical and experimental studies reveal that the hybridization of the glass system enables a new balance between the glass-forming ability and crystallization and can overcome the uncontrolled devitrification phenomenon during the dense crystallization of glass. Transparent hybridized oxide-fluoride ceramics with fiber geometry and dual-phase microstructures are also successfully fabricated. The generality of the strategy is confirmed, and transparent ceramics with various chemical compositions and phase combinations are prepared. Additionally, the cross-section of the ceramic fibers can be easily tuned into a circle, square, trapezoid, or even a triangle. Furthermore, the practical applications of optical ceramics for lighting and X-ray imaging are demonstrated. The findings described here suggest a major step toward expanding the scope of optical ceramics.

中文翻译：

氟氧铝硅酸盐玻璃杂化工程构建双相光学陶瓷

在温和条件和标准大气压下构建透明陶瓷具有巨大的科技潜力；然而，当使用传统的陶瓷烧结技术时，仍然难以实现。在此，提出了一种基于杂化铝硅酸盐玻璃的阶梯双相结晶来构建具有高结晶度（>90%）的双相光学陶瓷的温和策略。理论和实验研究表明，玻璃体系的杂化在玻璃形成能力和结晶之间实现了新的平衡，可以克服玻璃致密结晶过程中的失控失透现象。还成功地制备了具有纤维几何形状和双相微结构的透明杂化氧化物-氟化物陶瓷。确认了该策略的通用性，并制备了具有各种化学成分和相组合的透明陶瓷。此外，陶瓷纤维的横截面可以很容易地调整为圆形、方形、梯形甚至三角形。此外，还展示了光学陶瓷在照明和 X 射线成像方面的实际应用。这里描述的发现表明朝着扩大光学陶瓷的范围迈出了重要一步。

更新日期：2022-12-28

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