Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis of Mullite-Zirconia Composites from Kaolin by Gel Coating

Gel Coating법에 의한 Kaolin으로부터 Mullite-Zirconia 복합체의 합성

  • 김세훈 (명지대학교 공과대학 무기재료공학과) ;
  • 김인섭 (요업기술원) ;
  • 이병하 (명지대학교 공과대학 무기재료공학과)
  • Published : 2000.05.01
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Abstract

In this study, mullite-zirconia comosite was fabricated by adding ZrOCl2.8H2O using of boehmite gel coating to Hadong kaolin (pink A grade) in order to enhance strength of the mullite specimens. The influence of ZrOCl2.8H2O content and fireing temperature on the crystall phase, microstructure, bulk density, strength of the specimens was investigated. Mullite-zirconia composite was produced in the process of coating zirconia to mullite powder synthesized thereafter and mixing simultaneously of starting materials with boehmite-zirconia gel. Maximum strength with in this study was 251 sintered at 1$600^{\circ}C$ for 2h. Bulk density and strength of the composite with zirconia coated mullite was higher than simultaneous on mixture of starting materials.

Keywords

References

  1. J. Am. Ceram. Soc. v.58 no.11-12 Stable and Metastable Equilibria in the System SiO₂· Al₂O₃ I. A. Aksay;J. A. Pask
  2. J. Am. Ceram. Soc. v.58 no.3-4 Creep of Polycrystalline Mullite P. A. Lessing;R. S. Gorden;K. S. Mazdiyasni
  3. J. Am. Ceram. Soc. v.60 no.3-4 High-Temperature Mechanical Properties of Mullite under Compression P. C. Dokko;J. A. pask;K. S. Mazdiyasni
  4. J. Kor. Ceram. Soc. v.27 no.2 알콕사이드로부터 Mullite 분말의 합성 및 Mullite Zirconia 복합체의 특성 함종근;이홍림
  5. J. Kor. Ceram. Soc. v.63 no.3-4 Mechanical Properities of Sintered, in Situ-Reacred Mullite-Zirconia Composites N. Claussen;J. John
  6. J. mater. sci. v.19 Microstructure and Mechanical Properties of Mullite/ZrO₂ Composites J. S. Moya;M. I. Osendi
  7. J. Am. Ceram. Soc. v.70 no.1 Microsturucture and Mechanical Properties of Mullite Prepared by Sol-Gel Method M. G. M. U. Ismail;Z. NaKay;S. Somiya
  8. Yogyo-Kyokai-Shi v.92 no.6 Preparation of Mullite Powder by Calcination of the Products Hydrothermally Treated from Mixed Alkoxide or Mixed Sol M. Suzuki;S. Hirishi;M. Yoshimura;S. Somiya
  9. Yogyo-Kyokai-Shi v.94 no.8 Properties of Mullite Powder Prepared by Coprecipitation and Microstructure of Fired Bodies K. Hamano;T. Sato;Z. Nakagaya
  10. J. Am. Ceram. Soc. v.42 no.7 The Kaolinite-Mullite Reaction Series : Ⅰ, Ⅱ, Ⅲ G. W. Brindley;M. Nakahira
  11. J. Am. Ceram. Soc. v.66 no.8 Microstructure of Sintered Mullite-Zirconia Composite S. Prochazka;J. S. Wallace;N. Claussen
  12. Advanced in Ceramics, vol. 24: Science and Technology of Zirconia Ⅲ Comparative Study of Sol-Gel Prepared Mullite and Mullite-ZrO₂ Composites with and Without Y₂O₃ K. Rundgren;P. Elfving;R. Pompe;K.P.D Lagerlof;B. Larsson
  13. Mat. Sci. Eng. v.71 Strengthening Strategies for ZrO₂-toughened Ceramics at HighTemperatures N. Claussen
  14. J. Am. Ceram. Soc. v.74 no.10 Mullite for Structural, Electronic, and Optical Applications I. A. Aksay;D. M. Dabbs;M. Sarikaya
  15. 한국결정학회 v.8 no.2 Boehmite gel coating 법에 의한 kaolin으로부터 mullite의 합성 및 그 특성 임병수;김인섭;소유영;박성;이병하
  16. J. Kor. Ceram. Soc. v.36 no.1 Kaolin을 이용한 Mullite 합성에 미치는 광화제 첨가효과 임병수;강경인;소유영;박성;이병하