Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the Micro Hole Drilling Characteristics of $Si_3N_4$-BN Based Machinable Ceramics

$Si_3N_4$-BN계 가공성 세라믹스의 마이크로 홀 가공특성에 관한 연구

  • 김동우 (인하대학교 기계공학과 대학원) ;
  • 조명우 (인하대학교 기계공학과) ;
  • 조원승 (인하대학교 재료공학과) ;
  • 이응숙 (한국기계연구원 지능형 정밀기계연구부) ;
  • 이재형 (영남대학교 재료공학부)
  • Published : 2004.04.01
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Abstract

Ceramics are very difficult-to-cut materials because of its high strength and hardness. Their machining mechanism is characterized by cracking and brittle fracture. In this paper, to give good machinability to the ceramics, h-BN powders are added to $Si_3N_4$, by volume of 20, 25 and 30%. And the machinability of the produced ceramics is tested using micro drilling system. Through required experimental works, it is shown that the micro drilling machinability is varied along with the volumetric percentage of h-BN powders. Also, it is verified that the obtained results can be used to develop new machinable ceramics of good material properties and machinability.

Keywords

References

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