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Optimization of conditions of preparation of YAG nanopowders for sintering of translucent ceramics

Tadeusz Chudoba 1Mathieu Teyssier Witold Łojkowski 1

1. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland


Agglomeration of YAG (Ytrium-Aluminium Garnet) nanopowders doped with various rare earth ions obtained by coprecipitation and calcination route is a serious problem when one wants to exploit nano-size properties like transparency of dispersions of the powders or low temperature sintering. YAG nanopowders doped with rare earth ions can be used as a starting material to make laser ceramics. We optimized the process of preparation of the powders for High Pressure-Low Temperature Sintering of semi-translucent pellets. Proper time of the milling to decrease agglomeration was evaluated with the help of Zeta-potential measurement. The dependence of the agglomerates size vs. time of the hand-milling permitted to optimize that process.


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Presentation: Poster at E-MRS Fall Meeting 2006, Symposium C, by Tadeusz Chudoba
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-15 13:00
Revised:   2009-06-07 00:44