Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Formation of $Al_2O_3$-Composites by the Melt Oxidation of an AlZnMg-alloy

AlZnMg-합금의 용융산화에 의한 $Al_2O_3$-복합재료의 형성

  • Published : 1996.09.01
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Abstract

The initiation and growth of $\alpha$-Al2O3/metal composites by the directed oxidation of molten commercial AlZnMg-alloy at 1223-1423K were investigated. Spontaneous bulk growth did not occur on the alloy alone. but the uniform initiation and growth of the composite were obtained by putting a thin layer of SiO2 particles on the surface of the alloy. Without SiO2 the external surface of the oxide layer was convered by MgO and MgAl2O4. But with the SiO2 reaction initiate the porous ZnO layers were found on the growth surface. The higher process temperature yielded a lower metal content. The oxidation product of $\alpha$-Al2O3 was found to be oriented with c-axis parallel to th growth direction. The growth rates increased with temperature and the apparent activation energy was 111.8 kJ/mol.

Keywords

References

  1. J. Mater. Res v.1 no.81-89 Formation of $Lanxide^TM$ Ceramic Composite Materials M.S. Newkirk(et al)
  2. 요업재료의 과학과 기술 v.9 no.6 용융산화법으로 제조한 세라믹기 복합재료 김일수
  3. Brit. Ceram. Proc Growth and Microstruc-tural Development of Melt-Oxidation Derived Al₂O₃/Al-Base Composites M. Sindel;N. Claussen
  4. J. Am. Ceram. Soc v.73 no.9 Influence of Magnesium-Aluminium Spinel on the Directed Oxidation of Molten Aluminium Alloys M. Sindel(et al)
  5. J. Mater. Res v.6 no.9 Nucleation and Growth of Al₂O₃/Metal Composites by Oxidation of Aluminium Alloys D. Salas(et al)
  6. J. Mater. Res v.6 no.9 A Thermogravimetric Study of the Oxidative Growth of Al₂O₃/Al Alloy Composites K.C. Vlach(et al)
  7. J. Mater. Res v.7 no.2 Observation on the Role of Mg and S₁ in the Directed Oxidation of Al-Mg-Si Alloys A.S. Nagelberg
  8. J. Am. Ceram. Soc v.75 no.2 Formation of Al₂O₃/Metal Composites by the Directed Oxidation of Molten Aluminium-Magnesium-Silicon Alloys : Part Ⅰ, Microstructural Development S. Antolin(et al)
  9. J. Am. Ceram. Soc v.75 no.2 Formation of Al₂O₃/Metal Composites by the Directed Oxidation of Molten Aluminium-Magnesium-Silicon Alloys : Part Ⅱ, Growth Kinetics A.S. Nagelberg (et al)
  10. ALUMINIUM v.69 no.3 Oxidationsverhalten einer AlSiMg-Legierungsschmelze I.S. Kim;H.W. Hennicke
  11. J. Mater. Sci v.30 Microstructural Development in the Directed Melt-oxidized (DIMOX) Al-Mg-S₁Alloys V.S.R. Muthy;B.S. Rao
  12. Solid State Ionics v.32/33 Growth Kinetics of Al₂O₃/Matal Composites from a Complex Aluminium Alloy A.S. Nagelberg
  13. ALUMINIUM v.68 no.7 Oxidationsverhalten von AlSiCuZn-Legierungen bei 900 bis 1300 °C I.S. Kim;H.W. Hennicke
  14. J. Am. Ceram. Soc v.73 no.9 Microstructure and Composition of Alumina/Aluminium Composites Made by Directed Oxidation of Aluminium E. Breval(et al)
  15. Ceram. Eng. Sci. Proc v.11 no.7,8 The Effect of Oxide Additives in Filler Materials during Directed Melt Oxidation Process S. Lee;D.K. Kim
  16. J. Mater. Sci v.24 Properties and Microstructures of Lanxide Al₂O₃/Al Ceramic Composite Materials M.K. Aghajanian(et al)
  17. Interceram v.41 no.2 Composites Made by Directed Oxidation of Al-Alloy with Aluminosilicate Fibers I.S. Kim;H.W. Hennicke
  18. J. Am. Ceram. Soc v.76 no.7 Microstructure Evolution of SiC/Al₂O₃/Al Composites Produced by Oxidation E. Manor(et al)
  19. 한국요업학회지 v.31 no.10 용융산화법으로 제조한 Al₂O₃-SiC 세라믹스의 미세구조와 기계적 성질 김일수;H.W. Hennicke
  20. Keram.Z. v.46 no.5;6 Einflu von Zusatzelementen auf die Bildung des Al₂O₃/Matall Verbundkrpers durch Schmelzoxidation von Al I.S. Kim;H.W. Hennicke