Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Sintering Behaviors of ITO Ceramics with Additions of TiO$_2$

TiO$_2$첨가에 따른 ITO 세라믹스의 소결 거동

  • 정성경 (경북대학교 무기재료공학과) ;
  • 김봉철 (경북대학교 무기재료공학과) ;
  • 장세홍 (전자부품종합기술연구소) ;
  • 김정주 (경북대학교 무기재료공학과)
  • Published : 1998.04.01
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Abstract

Densification and grain growth behaviors of ITO ceramics were investigated as a function of TiO2 ad-ditions. TiO2 addition led to inhibition of the grain growth and promotion of the densification of ITO ceram-ics. From the microstructure observation it was found that the crack-like voids which were formed in pure ITO specimens decreased with increase of TiO2 additon. The grain growth exponent(n) was measur-ed to be 4 for pure ITO 3 for TiO2-doped ITO specimens respectively. It was supposed that the grain boun-dary migration of pure ITO ceramics was controlled by the pores which were moved by surface diffusion. On the contrary the grain boundary migration of TiO2-doped ITO specimens was depressed by solute drag effect. The activation energies for grain growth were measured to be 1013 kJ/mol for pure ITO ceramics and 460kJ/mol for TiO2-doped ITO specimens respectively.

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References

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