한국분말재료학회지 (Journal of Powder Materials)

  • 제28권1호
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  • Pages.13-19
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  • 2021
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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입자 크기별 가공부산물로 제조된 벌크흑연의 기계적 성질

Mechanical Properties of Bulk Graphite using Artificial Graphite Scrap as a Function of Particle Size

  • 이상혜 (금오공과대학교 신소재공학과) ;
  • 이상민 (금오공과대학교 신소재연구소) ;
  • 장원표 (금성테크) ;
  • 노재승 (금오공과대학교 신소재공학과)
  • Lee, Sang Hye (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Lee, Sang Min (Advanced Material Research Center, Kumoh National Institute of Technology) ;
  • Jang, Won Pyo (GeumSungTech) ;
  • Roh, Jae Seung (School of Materials Science and Engineering, Kumoh National Institute of Technology)
  • 투고 : 2021.01.06
  • 심사 : 2021.02.15
  • 발행 : 2021.02.28
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초록

Bulk graphite is manufactured using graphite scrap as the filler and phenolic resin as the binder. Graphite scrap, which is the by-product of processing the final graphite product, is pulverized and sieved by particle size. The relationship between the density and porosity is analyzed by measuring the mechanical properties of bulk graphite. The filler materials are sieved into mean particle sizes of 10.62, 23.38, 54.09, 84.29, and 126.64 ㎛. The bulk graphite density using the filler powder with a particle size of 54.09 ㎛ is 1.38 g/㎤, which is the highest value in this study. The compressive strength tends to increase as the bulk graphite density increases. The highest compressive strength of 43.14 MPa is achieved with the 54.09 ㎛ powder. The highest flexural strength of 23.08 MPa is achieved using the 10.62 ㎛ powder, having the smallest average particle size. The compressive strength is affected by the density of bulk graphite, and the flexural strength is affected by the filler particle size of bulk graphite.

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