Laser Solutions (한국레이저가공학회지)

Korean Society of Laser Processing (한국레이저가공학회)
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Mechanical Properties of Silicon Nitride Laser-Assisted Machined by Laser Power

레이저 출력에 따른 레이저예열선삭된 질화규소의 기계적 특성

  • Kim, Jong-Do (Division of Marine Engineering System, Korea Marine University) ;
  • Lee, Su-Jin (Graduated school, Korea Marine University) ;
  • Shin, Ding-Sig (Department of High Density Energy Beam Processing and System, KIMM) ;
  • Suh, Jeong (Department of High Density Energy Beam Processing and System, KIMM) ;
  • Lee, Jae-Hoon (Department of High Density Energy Beam Processing and System, KIMM)
  • 김종도 (한국해양대학교 기관시스템 공학부) ;
  • 이수진 (한국해양대학교 대학원) ;
  • 신동식 (한국기계연구원 광응용생산기계연구실) ;
  • 서정 (한국기계연구원 광응용생산기계연구실) ;
  • 이제훈 (한국기계연구원 광응용생산기계연구실)
  • Published : 2009.12.31
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Abstract

The engineering ceramic is one of the materials advantageous in various conditions with high strength, endurance at high temperature, abrasion resistance and corrosion resistance, etc. However, due to high strength and high brittleness, ceramic incurs high costs and long time on finishing process required after sintering. So a process for obtaining wanted measurements of them has been studied using the high temperature which makes ceramics softened and heat affected recently. This study makes an estimate of laser-assisted machining (LAM) if an economically practical process for manufacturing precision silicon nitride ceramic parts using laser beam. In this study, mechanical properties of silicon nitride at high temperature were observed. And during the LAM, it was observed that cutting force and tool wear were reduced and oxidation of machined surface was increased according to a increase of laser power.

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