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Open AccessArticle

Preparation of LuAG Powders with Single Phase and Good Dispersion for Transparent Ceramics Using Co-Precipitation Method

1
School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
2
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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Authors to whom correspondence should be addressed.
Academic Editor: Javier Narciso
Materials 2015, 8(8), 5363-5375; https://doi.org/10.3390/ma8085247
Received: 8 June 2015 / Revised: 13 July 2015 / Accepted: 6 August 2015 / Published: 19 August 2015
The synthesis of pure and well dispersed lutetium aluminum garnet (LuAG) powder is crucial and important for the preparation of LuAG transparent ceramics. In this paper, high purity and well dispersed LuAG powders have been synthesized via co-precipitation method with lutetium nitrate and aluminum nitrate as raw materials. Ammonium hydrogen carbonate (AHC) was used as the precipitant. The influence of aging time, pH value, and dripping speed on the prepared LuAG powders were investigated. It showed that long aging duration (>15 h) with high terminal pH value (>7.80) resulted in segregation of rhombus Lu precipitate and Al precipitate. By decreasing the initial pH value or accelerating the dripping speed, rhombus Lu precipitate was eliminated and pure LuAG nano powders were synthesized. High quality LuAG transparent ceramics with transmission >75% at 1064 nm were fabricated using these well dispersed nano LuAG powders. View Full-Text
Keywords: co-precipitation method; single phase; pH values; LuAG powder; transparent ceramics co-precipitation method; single phase; pH values; LuAG powder; transparent ceramics
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Pan, L.; Jiang, B.; Fan, J.; Yang, Q.; Zhou, C.; Zhang, P.; Mao, X.; Zhang, L. Preparation of LuAG Powders with Single Phase and Good Dispersion for Transparent Ceramics Using Co-Precipitation Method. Materials 2015, 8, 5363-5375.

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