Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Fabrication of$Al_2O_3/Fe$ composite by reaction sintering

반응소결법에 의한 $Al_2O_3/Fe$ 복합재료 제조

  • 김송희 (포항공대 항공재료연구센터겸직) ;
  • 윤여범 (강원대학교 재료공학과)
  • Published : 1999.04.01
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Abstract

An $Al_2O_3/Fe$ composite was synthesized through the double stage processes by a reaction sintering which requires simple process and equipments but provides near-net-shape, a reduction/oxidation process for 5 hrs at $650^{\circ}C$ was followed by sintering at $1200^{\circ}C$ to form an $Al_2O_3/Fe$ composite. The composite processed through the double stage sintering are mainly consists of $\alpha$-Fe and ${\alpha}Al_2O_3$ with minor amount of $FeAl_2O_4$, a spinnel structure which is known to prevent Fe from filling up the pores and good contact with $Al_2O_3/Fe$ particles.

$Al_2O_3/Fe$ 복합재료 제조는 반응소결법에 의한 2단계 공정을 통해서 제조되었으며 이 공정은 장비가 간단하고 near-net-shape이 가능한 장점이 있다.$Al_2O_3/Fe$ 복합재료를 제조하기 위해서 1차로 $650^{\circ}C$에서 5시간동안 산화/환원 처리를 행하고 $1200^{\circ}C$에서 2차로 소결처리를 행하였다. 제조된 복합재료의 상분석결과 $\alpha$-Fe 와 $\alpha$-$Al_2O_3/Fe$가 주된 상이었고 소량의 $FeAl_2O_4$가 검출되었다. 이 소량의 $FeAl_2O_4$상은 Fe가 $Al_2O_4$기공을 채우는 것을 방해함으로써 소결동안 미세구조 내에 약간의 기공을 발생시킨다.

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References

  1. J. Mater. Res. v.1 M.S. Newkirk;A.W. Urquhart;H.R. Zwicker;E. Breval
  2. Mater. Res. Soc. Sympo. Proc. v.155 A.S. Nagelberg
  3. J. Ceram. Eng. Sci. Proc. v.11 no.7;8 N. Claussen;N.A. Travitzky;Suxing Wu
  4. J. Ceram. Eng. Sci. Proc. v.9 no.7;8 C.A. Andersson;M.K. Aghajanian
  5. J. Ceram. Soc. Jpn. v.100 T. Watari;K. Ohta;T. Torikai;O. Matuda
  6. J. Am. Ceram. Soc. v.76 no.7 Else Breval;Michael K. Aghajanian;John P. Biel;Stanislav Antolin
  7. J. Am. Ceram. Soc. v.79 no.3 Vikram jayaram;Rampada Manna;ManJunath G. Kshetrapal;Jaydeep Sarkar;SanJay K. Biswas
  8. J. Eur. Ceram. Soc. v.5 N. Claussen;Tuyen Le;Suxing Wu
  9. Proc. of the 11th Rise International Symposium on Metallurgy and Materials Science Suzing Wu;N. A. Travitzky;N. Claussen
  10. J. Eur. Ceram. Soc. v.7 Suxing Wu;A.J. Gesing;A. Nahum;N.A. Travitzky;N. Claussen
  11. J. Am. Ceram. Soc. v.74 no.10 Suxing. Wu;Nils claussen
  12. J. Am. Ceram. Soc. v.76 no.4 Suxing. Wu;Dietmar Holz;Nils claussen
  13. J. Am. Ceram. Soc. v.77 no.10 Dietmar Holz;Suxing Wu;Sven Scheppokat;Nils Claussen
  14. Metal-Oxygen Compounds in Silicate Systems v.11 Handbook of Phase Diagrams of Silicate Systems N.A. Toropov;V.P. Barzakovskii;I.A. Bondar;Y.P. Udalov