Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of Monodispersed Colloidal Particles of Yttrium Compound by Homogeneous Precipitation. I.Effect of $Y(NO_3)_3$ Concentration

균일침전법에 의한 균일입도 초미분 이트륨화합물의 제조에 관한 연구 I. $Y(NO_3)_3$ 농도의 영향

  • 권영식 (고려아연주식회사 기술연구소) ;
  • 김연식 (서울대학교 공과대학 재료공학부)
  • Published : 1996.05.01
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Abstract

Monodispersed colloidaly yttria(Y2O3) can be used in a variety of applications such as phosphors. IR transparent materials and fine ceramics. For preparing monodispersed yttria homogeneous precipitation has been regarded as a fovorable method that is monodispersed yttria can be obtained through calcining monodispersed colloidal compound of yttrium (eg:Y(OH)CO3.nH2O)which can be prepared by homogeneous precipitation with urea. It is however still required to find out the quantitative effects of important variables of precipitation such as concentration of yttrium and urea reaction temperature and initial pH of reactant even though homogeneous precipitation of Y3+ with urea has been studied extensively. Among the effects of these variables we investiga-ted 1) the effect of yttrium concentration on the shape and size of precipitate and the reation rate 2) range of yttrium concentration required to make monodispersed colloidal particles 3) the reason for limited concentra-tion range of yttrium and 4) the effect of ultrasonic radiation on the limited concentration.

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References

  1. International Materials Reviews v.37 no.5 Extractive Metallurgy of Rare Earths C.K. Gupta;N. Krishnamurthy
  2. J. Less-Common Metals v.111 The Role of the Lanthanides and Yttrium in Advanced Engineering and High-Technology Ceramics B.T. Kilbourn
  3. J. Less-Common Metals v.111 The Economics of Rare Earths P. Falconnet
  4. 工業レアメタル v.96 レア ア-ス系 複合機能性 超微粒子の 應用展開 千葉淳治
  5. J. Materials Sci. v.26 Preparation of Nanosized Yttria-Stabilized Zirconia Powders and their Application T.L. Wen;V Hebert;S. Vilminot;J.C. Bernier
  6. J. Materials Sci. v.26 Preparation and Characterization of Precursors of Y₂O₃ Stabilized ZrO₂ by Metal-Organic Compound V. Hebert;C. His;J. Guille;S. Vilminot;T.L. Wen
  7. 金屬 v.62 no.5 ODS 合金の 歷史的 展望 田中 良平
  8. 金屬 v.62 no.5 高溫 耐食性 Ni基 ODS 合金の 開發 川崎 要造
  9. Ceram. Bulletin v.63 no.5 Lanthanides and Yttrium B.T. Kilbourn
  10. Adv. Ceram. Mater. v.3 no.3 Formation, Structure and Decomposition of Lanthanide Basic Carbonate M. Akinc;D.J. Sordelet;M. Munson
  11. 螢光體 ハンドブソク 螢光體 同學會(編)
  12. J Am. Ceram. Soc. v.71 no.12 Sintering of Monosized, Spherical Yttria Powders D.J. Sordelet;M. Akinc
  13. Adv. Colloid Interface Sci. v.28 Preparation of Monodispersed Colloidal Particles T. Sugimoto
  14. Adv. Ceram. Mater. v.2 no.3A Preparation of Yttrium, Lanthanium, Cerium and Neodymium Basic Carbonate Particles by Homogeneous Precipitation M. Akinc;D. Sordelet
  15. MRS bulletin v.14 no.12 Fine Particles: Science and Technology E. Matijevic
  16. Pure & Appl. Chem. v.60 no.10 Colloid Science of Ceramic Powders E. Matijevic
  17. Pure & Appl. Chem v.61 no.5 Monodisperse Colloids of Transition Metal and Lanthanide Compounds J.K. Beattie
  18. J. Am. Ceram. Soc. v.71 no.10 Preparation and Properties of Monodispersed Colloidal Particles of Lanthanide Compounds: Ⅲ, Yttrium (Ⅲ) and Mixed Yttrium (Ⅲ)/Cerium (Ⅲ) Systems B. Aiken;W.P. Hsu;E. Matijevic
  19. J. Colloid Interface Sci. v.122 no.1 Preparation of Spherical, Monosized Y₂O₃ Precursor Particles D. Sordelet;M. Akinc
  20. J. Am. Chem. Soc. v.77 The Decomposition of Urea in Aqueous Media W.H.R. Shaw;J.J. Bordbaux
  21. Quantitative Chemical Analysis(2nd Ed.) D.C. Harris
  22. Introduction to Colloid Chemistry K.J. Mysels