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Reduction in lubricant pickup by bias voltage between slider and disk surfaces

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Abstract

We studied the effect of bias voltage between slider and disk surfaces to reduce lubricant pickup by the slider. A perfluoropolyether (PFPE) lubricant film, which is coated on the disk surface, has been considered to be charged to a negative voltage by the airflow on the rotational disk surface. Because the PFPE lubricant film is negatively charged, the lubricant pickup should be reduced by a bias voltage with a negative voltage on the slider surface. We confirmed changes in the lubricant pickup in a lubricant pickup test conducted at different bias voltages. A positive voltage of the slider accelerated the lubricant pickup, whereas a negative voltage reduced it.

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Acknowledgments

This work was supported in part by the Kansai University, Outlay Support for Establishing Research Centers in 2014, by MEXT KAKENHI Grant No. 15H02216, and by the Taiho Kogyo Tribology Research Foundation (TTRF).

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Authors and Affiliations

  1. Kansai University, 3-3-35, Yamate-cho, Suita-shi, Osaka, 564-8680, Japan

    Hiroshi Tani, Shinji Koganezawa & Norio Tagawa

Authors
  1. Hiroshi Tani
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  2. Shinji Koganezawa
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  3. Norio Tagawa
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Correspondence to Hiroshi Tani.

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Tani, H., Koganezawa, S. & Tagawa, N. Reduction in lubricant pickup by bias voltage between slider and disk surfaces. Microsyst Technol 22, 1221–1225 (2016). https://doi.org/10.1007/s00542-016-2814-6

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  • DOI: https://doi.org/10.1007/s00542-016-2814-6

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