Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on the Fabrication of Reinforced Reaction Bonded Alumina Ceramics

반응결합 강화 알루미나세라믹스의 제조에 관한 연구

  • Published : 1998.04.01
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Abstract

The reaction bonded alumina ceramics with reinforced particles which have low shrinkage were pro-duced by blending of SiC or TiC or ZrO2 powders to the mixture of Al metal and Al2O3 powder. The powd-ers were attrition milled isostantically pressed and preheated tio 110$0^{\circ}C$ with a heating rate of $1.5^{\circ}C$/min The specimens were then sintered at the temperature range 1500 to 1$600^{\circ}C$ for 5 hours with a heating rate of 5$^{\circ}C$/min. The specimens showed 5-9% weight gain and 2-9% dimensional expansion through the complete oxidation of Al after preheating up to 11--$^{\circ}C$ the overall dimensional change of the specimens after the reaction sintering at 1500-1$600^{\circ}C$ was 6-12% The maximum densities were 92% theoretical. The fine grain-ed(average grain size :0.4 ${\mu}{\textrm}{m}$) microstructure were observed in the specimen with ZrO2 and SiC. But the microstructure of specimen with TiC was relatively coarse.(average grain size : 2.1 ${\mu}{\textrm}{m}$) The mullite phase was formed by the reaction of Al2O3 and SiO2 in a specimen with SiC. In the TiC contained specimen TiC was oxidized into TiO2 and finally reacted with Al2O3 to form Al2TiO5 during sintering.

Keywords

References

  1. J. Eur. Ceram. Soc. v.5 Low-shrinkage Reaction-Bonded Alumina N. Claussen(et al.)
  2. J. Am. Ceram. Soc. v.76 no.4 Mechanisms and Kinetics of Reaction-bonded Aluminium Oxide Ceramics S. Wu(et al.)
  3. J. Am. Ceram. Soc. v.77 no.10 Effect of Processing Parameters on Phase and Microstructure Evolution in RBAO Ceramics D. Holz(et al.)
  4. J. Mater. Sci. v.30 Fast Firing of RBAO Composites D.E. Garcia(et al.)
  5. Ceram. Eng. Sci. Proc. v.11 no.7-8 Preparation and Chracterization of Reaction-Bonded$Al_2O_3$(RBAO) Matrix SiC Particulate Filler Composites A.G. Gessing(et al.)
  6. Ceram. Eng. Sci. Proc. v.15 no.4 Sapphire-Fiber Reinforced RBAO J. Wendorff(et al.)
  7. J. Eur. Ceram. Soc. v.16 RBAO Composites Containing TiN and TiN/TiC S. Scheppokat(et al.)
  8. 요업학회지 v.31 no.3 산화물과 금속분말의 Attrition Milling 및 반응소결;Ⅰ 분말의 특성에 따른 분쇄거동 황규홍;박정환;윤태경
  9. 요업학회지 v.31 no.4 산화물과 금속분말의 Attrition Milling 및 반응소결;Ⅱ 분말의 분쇄특성에 따른 반응소결거동 황규홍;김의훈
  10. Metall & Mater. Trans. A v.26A no.9 The Effects of Ball Size Distribution on Attritor Efficiency T.M. Cook;T H. Courtney
  11. 3.4.5 메카노케미스트리 세라믹 분체 재료학 荒康夫(저);김창은(외 3인 공역)
  12. 요업학회지 v.34 no.5 반응소결 Alumina의 소결거동과 기계적 성질에 미치는 Al 첨가량의 영향 장복기;문종하;이종호
  13. Z. Werkstofftech. v.13 Umwandlungsverstacrkte Keramische Werkstoffe N. Claussen
  14. 요업학회지 v.34 no.5 SiC의 산화에 의한$Al_2O_3$/SiC 복합체의 제조 김경환;이홍림;이형민;홍기곤
  15. J. Am. Ceram. Soc. v.77 no.11 Mechanical Behavior of Alumina-Silicon Carbide nanocomposites J. Zhao(et al.)
  16. Am. Ceram. Soc. v.78 no.1 Effect of Sic Submicrometer Particle Size and Content on Fracture Toughness of Alumina SiC Nanocomposites I. Lavin(et al.)
  17. Am. Ceram. Soc. Alumina as a Ceramic Material, 16-3 Sintering Additives W.H. Gitzen
  18. 세라믹스의 기계적 특성 이준근