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首页> 外文期刊>Optical Materials >Highly transparent Tb_3Al_5O_(12) magneto-optical ceramics sintered from co-precipitated powders with sintering aids
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Highly transparent Tb_3Al_5O_(12) magneto-optical ceramics sintered from co-precipitated powders with sintering aids

机译:由共沉淀粉末和烧结助剂烧结而成的高透明Tb_3Al_5O_(12)磁光陶瓷

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摘要

Highly transparent terbium aluminum garnet (Tb3Al5O12, TAG) magneto-optical ceramics were fabricated from co-precipitated nanopowders with tetraethoxysilane (TEOS) as sintering aid by vacuum sintering combined with hot isostatic pressing (HIP) post-treatment. The ball milled TAG powder shows better dispersity than the as-synthesized powder, and its average particle size is about 80 nm. For the ceramic sample pre-sintered at 1720 degrees C for 20 h with HIP post-treated at 1700 degrees C for 3 h, the in-line transmittance exceeds 76% in the region of 400-1580nm (except the absorption band), reaching a maximum value of 81.8% at the wavelength of 1390 nm. The microstructure of the TAG ceramic is homogeneous and its average grain size is approximately 19.7 mu m. The Verdet constant of the sample is calculated to be -182.7 rad . T-1. m(-1) at room temperature. (C) 2018 Elsevier B.V. All rights reserved.
机译:由共沉淀的纳米粉末与四乙氧基硅烷(TEOS)作为烧结助剂,通过真空烧结结合热等静压(HIP)后处理,制备了高度透明的aluminum铝石榴石(Tb3Al5O12,TAG)磁光陶瓷。球磨过的TAG粉末比合成粉末具有更好的分散性,其平均粒径约为80 nm。对于在1720摄氏度下预烧结20小时,在1700摄氏度下进行3小时HIP后处理的陶瓷样品,其在线透射率在400-1580nm范围内(吸收带除外)超过76%,达到在1390 nm波长处的最大值为81.8%。 TAG陶瓷的微观结构是均匀的,其平均晶粒尺寸约为19.7μm。样品的Verdet常数经计算为-182.7 rad。 T-1。在室温下为m(-1)。 (C)2018 Elsevier B.V.保留所有权利。

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