Transparent Yttrium Aluminium Garnet Obtained by Spark Plasma Sintering of Lyophilized Gels
Transparent Yttrium Aluminium Garnet Obtained by Spark Plasma Sintering of Lyophilized Gels
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DOI：
10.1155/2009/138490
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发表时间：
2009-01-01
影响因子：
--
通讯作者：
Torrecillas, R.
中科院分区：
文献类型：
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作者：
Suarez, M.;Fernandez, A.;Torrecillas, R.
采用共沉淀技术合成的YAG冻干凝胶，通过放电等离子烧结法在1500℃下烧结至透明。传统干燥凝胶显示出超过1μm的大团聚体，而冻干凝胶粉末没有显示出团聚体，平均粒径低于100nm。不存在团聚体会影响烧结材料的光学性能：传统的干燥粉末在烧结后是不透明的，而冻干凝胶获得了0.8mm厚的透明YAG材料，其在680nm处的直线透射率接近60%，在红外范围内的直线透射率超过80%。版权所有 (C) 2009 M. Suarez 等人。
Lyophilized YAG gel, synthesized by the coprecipitation technique, has been sintered to transparency by spark plasma sintering method at 1500 degrees C. Whereas conventionally dried gels show large agglomerates, over 1 mu m, powders from lyophilized gels show no agglomeration with an average particle size below 100 nm. The absence of agglomerates affects on the optical properties of the sintered materials: conventionally dried powders are opaque after sintering, whereas 0.8mm thick transparent YAG materials with in-line transmittances close to 60% at 680nm and over 80% in the infrared range have been obtained for the lyophilized gels. Copyright (C) 2009 M. Suarez et al.