한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제20권2호
  • /
  • Pages.107-114
  • /
  • 1983
  • /
  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

공심법과 (Sr-Ti)수산염에 의한 고순도의 $SrTiO_3$ 합성에 관한 연구

Preparation of High Purity $SrTiO_3$ by Coprecipitation and Strontium Titanyl Oxalates

  • 발행 : 1983.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Formation of Strontium titanate from the products of coprecipitation takes place at 110$0^{\circ}C$ which is 200-30$0^{\circ}C$ lower than that from mechanical mixtures of $SrCO_3$ and $TiO_2$. This is apparently due to the nature of the compounds formed by the reaction of mixtures of aqueous solutions of $SrCl_2$ and $TiCl_4$ with an ammoniacal solution of ammoni-um carbonate and ammonium hydroxide. A procedure is described for preparing strontium titanyl oxalate tetrahydrate in the several mole ratio of $TiCl_4$ to $SrCl_2$. STrontium titanyl oxalates decompose to titanate at elevated temperature. The coprecipitates and the fired specimen were subjected to examined thermal and X-ray analyses and microstruc-ture by SEM.

키워드

참고문헌

  1. Phys. Rev. v.163 no.2 Superconducting Transition Temperatures of Semiconducting SrT₁C₃ C. S. Koonce;Marvin L. Cohen
  2. セラミック 半導體 ェレセラ出版委員會(編)
  3. Phys. Rev. v.147 no.2 Magnetic Susceptibility of Insulating and Semiconducting Strontium Titanate H. P. R. Frederikse;George A. Candela
  4. Japan Analyst. v.10 均一溶液からの沈澱生成に關する最近の進步(Ⅱ) 瀧山一善;Gordon Louis
  5. Cera. Bul. v.49 no.11 Preparation of BaT₁O₃ and Other Ceramic Powders by Coprecipitation of Citrates in an Alcohol B. J. Mulder
  6. J. Am. Ceram. Soc. v.52 no.10 Preparation of High Purity Submicron Barium Titanate Powders K. S. Mazdiyasni;R. T. Dolloff;J. S. Smith
  7. J. Res. Na. Bureau St. v.56 no.5 Preparation of Barium Titanyl Oxalate Tetrahydrate for Conversion to Barium Titanate of High Purity W. Stanley Clabaugh;Edward M. Swiggard;Ralcigh Gilchrist
  8. Titanium, Its Occurrence Chemistry and Technology(2nd. ed.) J. Barksdole
  9. J. Am. Ceram. Soc. v.49 no.6 Ferroelectrics of Ultrafine Particle Size Klara Kiss;Jules Magder;Mark S. Vukasovich;Robert J. Lockhart
  10. J. Am. Ceram. Soc. v.48 no.12 Thermal Analysis of Some Barium and Strontium Titanyl Oxalates P. K. Gallagher;J. Thomson. J. R.
  11. J. Am. Ceram. Soc. v.46 no.12 Thermal Decomposition of Some Substituted Barium Titanyl Oxalates and its Effects on the Semiconducting Properties of the Doped Materials P. K. Gallagher;F. Schrey
  12. J. Am. Ceram. Soc. v.48 no.8 Effect of pH on the Chemical Preparation of Barium-Strontium Titanate Frank Schrey
  13. 工業化學雜誌 v.64 no.1 固相反應硏究用 X 線回折計試科加熱裝置とその應用 久保輝一郞;加藤誠軌
  14. 요업학회지 v.20 no.1 SrCO₃와 TiO₂를 사용한 SrTiO₃의 합성 반응에 관한 연구 이증근;이빙하