真空烧结Al2O3:Cr3+透明陶瓷作为单晶红宝石†的经济高效替代品

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2025-04-08 DOI:10.1039/D5CE00327J

Yikun Zhang, Pan Hu, Yongfu Liu, Jianfeng Sun and Jun Jiang

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引用次数: 0

摘要

Al2O3:Cr3+红宝石是最受欢迎的激光材料之一，因为它具有独特的光学和物理性质。如何高效、经济地获得Al2O3:Cr3+仍然是一个挑战。在本研究中，采用传统的固态工艺在真空环境下制备了Al2O3:Cr3+透明陶瓷。在1200 nm处，纯Al2O3透明陶瓷的透光率达到76.8%，接近单晶透光率。研究了Al2O3:Cr3+透明陶瓷的光致发光、微观形貌、导热性能和力学性能。制备了导热系数约为38 W m−1 K−1，硬度为1859 HV的红宝石。这些结果表明，Al2O3:Cr3+透明陶瓷在某些领域替代Al2O3:Cr3+单晶具有广阔的应用前景。

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Vacuum-sintered Al2O3:Cr3+ transparent ceramics as cost-effective alternatives to single-crystal ruby†

Al₂O₃:Cr³⁺ ruby is one of the most popular materials for lasers because it has unique optical and physical properties. How to obtain Al₂O₃:Cr³⁺ efficiently and economically remains a challenge. In this study, Al₂O₃:Cr³⁺ transparent ceramics were prepared through a traditional solid-state process in a vacuum environment. A high transmittance of 76.8% at 1200 nm, approaching that of single crystals, can be reached in the pure Al₂O₃ transparent ceramic. The photoluminescence, micromorphology, thermal conductivity, and mechanical characteristics of Al₂O₃:Cr³⁺ transparent ceramics were studied. A ruby with a thermal conductivity of about 38 W m⁻¹ K⁻¹ and a high hardness of 1859 HV was prepared. These results indicate that Al₂O₃:Cr³⁺ transparent ceramics have broad prospects to serve as a substitute for Al₂O₃:Cr³⁺ single crystals in certain fields.