Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Machinable Ceramics Made by the Reaction Sintering of PSZ, Al2O3 and TiO2

PSZ, Al2O3, TiO2를 반응소결하여 제조한 쾌삭(快削) 세라믹스

  • Park, Jeong Hyun (Department of Materials and Components Engineering, Dongeui University) ;
  • Jung, Dong Sik (Department of Materials and Components Engineering, Dongeui University) ;
  • Lee, Won Jae (Department of Materials and Components Engineering, Dongeui University) ;
  • Kim, Il Soo (Department of Materials and Components Engineering, Dongeui University)
  • 박정현 (동의대학교 융합부품공학과) ;
  • 정동식 (동의대학교 융합부품공학과) ;
  • 이원재 (동의대학교 융합부품공학과) ;
  • 김일수 (동의대학교 융합부품공학과)
  • Received : 2012.06.28
  • Accepted : 2012.08.08
  • Published : 2012.11.30
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Abstract

Machinability is important in engineering applications, especially in the current micro-electronics industry. Most ceramic components have complex shapes and hence require machining generally with diamond tools, which incurs a high production cost. Recently, h-BN-containing machinable ceramics have been developed, but these materials are very expensive due to the high raw materials and production costs. Therefore, the development of low-cost machinable ceramics is necessary. In this study, inexpensive $Al_2TiO_5$ was studied as a replacement for h-BN. $Al_2O_3$, $TiO_2$ and partially stabilized $ZrO_2$(PSZ) powders were mixed with various mole ratios and were sintered at $1500^{\circ}C$ for 1 h. The density, hardness and strength were then measured. The phase analysis and microstructures were observed by XRD and SEM, respectively. The machinability of each specimen was tested by micro-hole machining. The results of this research showed that the produced composites could be used as low-cost machinable ceramics.

Keywords

References

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