The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Characterization of Spray-Dried Yttrium Aluminum Garnet Powder

  • Sim, S.M. (Dept. of Inorganic Materials Eng., Ik University, Chung Nam)
  • Published : 1995.03.01
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Abstract

Yttrium aluminum garnet(YAG) powders were synthesized by spray-drying of the hydroxides coprecipitated from a mixture of aqueous solutions of $Al(NO_3)_3.9H_2O \;and\; Y(NO_3)_3.6H_2O$ Phase formation in the powders during heat treatments and their sintering charactristics were investigated. In the powder obtained by washing the hydroxides before spray-drying, a metastable yttrium aluminum hexagonal (YAH) phase was first crystallized and then transformed into YAG as temperature was increased. The formation of YAH was attributed to a deviation in compositions of the particles from the starting composition of YAG. However, the powder prepared without washing step contained a stable yttrium aluminum monoclinic(YAM) phase in addition to YAG due to a large deviation from the starting composition. A powder compact of a single phase YAG was pressureless-sintered for 4 hrs at $1700^{\circ}C$ and the density was 93% of the theoretical density.

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References

  1. J. Less-Comm. Metal v.114 no.17 The Uses and Enigmas of the Al₃O₃-Y₂O₃ Phase System B. Cockayne
  2. Am. Mineralogist v.36 no.7-8 Complete Substitution of Aluminum for Silicon: The System 3MnO·Al₂O₃ 3SiO₂-3Y₂O₃·5Al₂O₃ H.S.Yoder;M.L.Keith
  3. Acta Cryst v.9 Crystalloraphic Studies of Perovskite-Like Compounds, I. Rare Earth Orthoferrites and YFeO₃, YCrO₃, YAlO₃ S.Geller;E.A.Wood
  4. J. Am. Ceram. Soc. v.42 no.9 Stable and Metastable Equilibria in the Systems Al₂O₃-Y₂O₃and Gd₂O₃-Fe₂O₃ I. Warshaw;R.Roy
  5. C. R. Acad. Sci. Paris. v.257 A New Type of Structure Hexagonal AlTO₃(T=Y, Eu, Gd, Tb, Dy, Ho, Er) F.Bertaut;J.Mareschal
  6. J. Mater. Sci. Lett. v.10 Formation of Alkoxy-Derived $Y_3Al_5O_12$ O.Yamaguchi;K.Takeoka;A.Hayashida
  7. Ceram. Eng. Sci. Proc. v.12 no.9-10 High-Temperature Creep of Some Single Crystal Oxides G.S.Corman
  8. Ceram. Eng. Sci. Proc. v.12 no.9-10 High-Tem-Perature Deformation Behavior of Polycrystalline Yttrium Aluminum Garnet(YAG) T.A.Parthasarathy;T.Mah;K.Keler
  9. Dok. Akad. Nauk. SSSR. v.260 no.5 Physicochemical Study of Y₂O₃-Al₂O₃ compounds V.B.Glushkova;V.A.Krzhizhanovskaya;O.N.Egorova
  10. Am. Ceram. Soc. Bull v.51 no.9 Systems of MgAl₂O₄ and $Y_3Al_6PO_12$ by Thermal Decomposition of Hydrated Nitrate Mixtures D.R.Messier;G.E.Gazza
  11. Inorg. Mater. v.19 no.7 Synthesis of Yttrium Aluminates by Precipitation of Hydroxides V.B.Glushkova;O.N.Egorova;V.A.Krzhizhanovskaya;K.Yu,Merezhinskii
  12. J. Mater. Res. v.7 no.3 Synthesis of Yttrium Aluminum Garnet by Reverse Strike Precipitation P.Apte;H.Burke;H.Pickup
  13. J. Eur. Ceram. Soc. v.6 Coprecipitation of Yttrium and Aluminium Hydroxide for Preparation of Yttrium Aluminium Garnet J.W.G.A.Vrolijk;J.W.M.M.Willems;R.Metselaar
  14. Phillips. J. Res v.42 Preparation, Microstructure and Properties of $Y_3Al_5O_12$Ceramics G.De.With
  15. J. Mater. Sci. Lett. v.5 no.10 Synthesis of Yttrium Aluminates by the SolGel Process G.Gowda
  16. Ceram. Eng. Sci. Proc. v.11 no.7-8 Processing and Mechanical Properties of Polycrystalline $Y_3Al_5O_12$ K.Keller;T.Mah;T.A.Parthasarathy
  17. Presented at the 17th Annual Conference on Composites and Advanced Ceramics Phase Formation in Yttrium Aluminum Garnet Powders S.M.Sim;K.A.Keller;T.I.Mah;S.Sambasivan
  18. Am. Ceram. Soc. Bull v.65 no.9 Controlled Nucleation for Hydrothermal Growth of Yttrium Aluminum Garnet Powders T.Takamori;L.D.Davis.
  19. Presented at the 17th Annual Conference on Composites and Advanced Ceramics Molecular Modification of Alkoxide Precursors in the Preparation of Yttrium Aluminum Garnet (YAG) Powder S.Sambasivan;K.Keller;S.M.Sim;T.I.Mah