外文题目: Influence of dopant concentration on the transparent and thermal properties of Nd2O3-doped alumina translucent ceramics
作者: Yang Qinghua; Jiang Benxue; Chen Shuilin; Jiang Yiguang; Zhang Pande; Mao Xiaojian; Zhang Long; Wang Jun
刊名: J. Rare Earths
年: 2017 卷: 35 期: 9 页： 883--886
英文关键词:
alumina translucent ceramics; neodymium dopant; thermal conductivity; substrate; LEDs; rare earths
CREEP; LANTHANUM; BEHAVIOR; YTTRIUM; LA2O3; OXIDE
英文摘要:
The transparent and thermal developments of high-purity Al2O3 doped with different levels of Nd2O3 were investigated. Dopant levels ranged from 500-1500 ppm (Nd/Al atomic ratio). The samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, transmittance spectroscopy and specific heat measurement. Results revealed that with proper Nd doped, Nd3+ ions solid dissolved in Al2O3 lattice, resulting in small and uniform grain and high bonding vibration, which was beneficial to transparent and thermal properties. With 1000 ppm Nd doped, Al2O3 translucent ceramics showed a total transmittance of 89% and thermal conductivity of 41.7 W/m/K, indicating a potential application as substrate for effective heat dissipation and multi emitting surface in LEDs module.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1016/S1002-0721(17)60990-6


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