The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Effect of Grain Size on the Thermomechanical Properties of $Al_2 TiO_5$ Ceramics

  • Kim, Ik-Jin (Institute for Processing and Application of Ceramics, IPAC, Dept. of Mat. Science and Engineering, Hanseo University) ;
  • Kweon, Oh-Seong (Institute for Processing and Application of Ceramics, IPAC, Dept. of Mat. Science and Engineering, Hanseo University) ;
  • Ko, Young-Shin (Department of Science Education, Seoul National University of Education) ;
  • Constatin Zografou (Institute for Processing and Application of Ceramics, IPAC, Dept. of Mat. Science and Engineering, Hanseo University)
  • Published : 1996.12.01
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Abstract

The thermomechanical properties of materials from the system Al2O3-SiO2-TiO2(Tialite-Mullite) were investigated by correlating the thermal expansion anisotroypy, flexural strength and Young's modulus with grain size and atructural microcracking during cooling. Microcracking temperatures were determined by measuring the hysteresis of the thermal expansion anisotropy with dilatometry. Single phase Aluminium Titanate is a low strength material, while composites with more than 10 vol% mullite as second phase enhance the Young's modulus, thermal expansion coefficient and room temperature strength.

Keywords

References

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