Additive Effect of Carbon Nanohorn on Grease Lubrication Properties

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  • Kobayashi Katsunori
    Dept. of Systems Engineering Science, Graduate School, Tokyo Metropolitan Institute of Technology
  • Hironaka Seiichiro
    Dept. of Systems Engineering Science, Graduate School, Tokyo Metropolitan Institute of Technology
  • Tanaka Akihiro
    Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology
  • Umeda Kazunori
    Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology
  • Iijima Sumio
    Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology Dept. of Material Science and Engineering, Faculty of Science and Technology, Meijo University CNT Project, Solution Oriented Research for Science and Technology (SORST), Japan Science and Technology Agency (JST) NEC Corp.
  • Yudasaka Masako
    CNT Project, Solution Oriented Research for Science and Technology (SORST), Japan Science and Technology Agency (JST) NEC Corp.
  • Kasuya Daisuke
    Dept. of Material Science and Engineering, Faculty of Science and Technology, Meijo University (Present) NEC Corp.
  • Suzuki Masahiro
    Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology

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Other Title
  • グリースの潤滑性能に対するカーボンナノホーンの添加効果

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Abstract

Recently, applications of the carbon nanohorn (CNH) have become of great interest in various industrial fields. The load carrying capacity and wear resistance of lithium soap grease containing CNH and heat-treated CNH (HT-CNH) were studied using a Falex friction tester, and compared with those of grease containing reference carbon materials such as graphite, cluster diamond (CD), and graphite cluster diamond (GCD). The load carrying capacity of the greases with carbon materials was always higher than that of the base grease. The greases with CNH and HT-CNH had the same or higher seizure load than those with CD and GCD. In particular, the grease with HT-CNH exhibited good load carrying capacity even at a low concentration of 1 mass%. The grease with 3 or more mass% graphite had the highest seizure load of all greases in this study. The grease with HT-CNH showed the best wear resistance of all greases in this study. The wear resistance of the grease with other solid lubricants was the same or inferior to that of the base grease.<br>

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