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Journal of mechanical science and technology v.24 no.8, 2010년, pp.1631 - 1635   SCIE 피인용횟수: 1
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Comparison of tribological characteristics between aluminum alloys and polytetrafluoroethylene composites journal bearings under mineral oil lubrication

Ku, Bon-Cheol    (School of Mechanical Engineering, Pusan National University   ); Park, Young-Do    (School of Mechanical Engineering, Pusan National University   ); Sung, Chi-Un    (School of Mechanical Engineering, Pusan National University   ); Han, Young-Chul    (School of Mechanical Engineering, Pusan National University   ); Park, Jung-Hoon    (School of Mechanical Engineering, Pusan National University   ); Hwang, Yu-Jin    (School of Mechanical Engineering, Pusan National University   ); Lee, Jung-Eun    (School of Mechanical Engineering, Pusan National University   ); Lee, Jae-Keun    (School of Mechanical Engineering, Pusan National University   ); Kim, Hyeong-Seok    (Digital Appliance Research Laboratory, LG Electronics Inc   ); Ahn, Sung-Young    (Digital Appliance Research Laboratory, LG Electronics Inc   ); Kim, Soo-Hyung    (Department of Nanosystem and Nanoprocess Engineering, Pusan National University  );
  • 초록

    This study examined the tribological behavior of journal bearings made from polytetrafluoroethylene (PTFE) composites and aluminum (Al) alloys. The PTFE composite journal bearings consisted of a steel backing with a thickness of 1.6 mm, a middle layer of sintered porous bronze with a thickness of 0.24~0.27 mm, and a surface layer of PTFE filled with fluorinated ethylene propylene (FEP) powder and carbon fibers with a thickness 0.06~0.14 mm. The other was an aluminum alloy journal bearing consisted of a steel backing with a thickness of 1.5 mm and a surface layer of an Al-6Sn-6Si alloy with a thickness 0.35~0.75 mm. A series of lubrication tests were performed using a journal bearing tester under various normal loads. The tribological properties for each journal bearing were evaluated by measuring the lubricant oil temperature and friction coefficient as a function of the applied normal load. In addition, the chemical compositions and microstructures of the journal bearing materials used in this study was analyzed by inductively coupled plasma (ICP), optical microscopy (OM), and scanning electron microscopy (SEM), respectively. The experimental results showed that the Al alloy journal bearings reduce the friction coefficient by 28 % compared to the PTFE composites bearings. In addition, the Al alloy journal bearing worked properly at the maximum load of~8,000 N without adhesion. However, the PTFE composite journal bearings exhibited strong adhesion at the loads ranging from 6300 to 8000 N. This suggests that the Al alloy is a more promising material in journal bearings than PTFE composites.


  • 주제어

    Al alloy bearing .   Friction coefficient .   Journal bearing .   PTFE composite bearing.  

  • 참고문헌 (12)

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  • 이 논문을 인용한 문헌 (1)

    1. Lee, Yong-Bok 2011. "" 유체기계저널 = Journal of fluid machinery, 14(2): 80~84     

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