Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Optimization for Permeability and Electrical Resistance of Porous Alumina-Based Ceramics

  • Kim, Jae (Powder and Ceramics Division, Korea Institute of Materials Science) ;
  • Ha, Jang-Hoon (Powder and Ceramics Division, Korea Institute of Materials Science) ;
  • Lee, Jongman (Powder and Ceramics Division, Korea Institute of Materials Science) ;
  • Song, In-Hyuck (Powder and Ceramics Division, Korea Institute of Materials Science)
  • Received : 2016.06.09
  • Accepted : 2016.08.02
  • Published : 2016.09.30
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Abstract

Recently, porous alumina-based ceramics have been extensively applied in the semi-conductor and display industries, because of their high mechanical strength, high chemical resistance, and high thermal resistance. However, the high electrical resistance of alumina-based ceramics has a negative effect in many applications due to the generation of static electricity. The low electrical resistance and high air permeability are key aspects in using porous alumina-based ceramics as vacuum chucks in the semi-conductor industry. In this study, we tailored the pore structure of porous alumina-based ceramics by adjusting the mixing ratio of the starting alumina, which has different particle sizes. And the electrical resistance was controlled by using chemical additives. The characteristics of the specimens were studied using scanning electron microscopy, mercury porosimetry, capillary flow porosimetry, a universal testing machine, X-ray diffraction, and a high-resistance meter.

Keywords

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