In this study, the effect of temperature on the spreading characteristics of ultra-thin liquid lubricant films in hard disk drives (HDD) was investigated by using three types of lubricants, namely, Zdol2000, Ztetraol2000, and A20H2000. The apparent diffusion coefficient of individual lubricants was evaluated and compared by varying the temperature of disk substrates. As a result, it was found that the mobility of each lubricant increases with the temperature. However, the rate of mobility increase is different for each lubricant, depending on the lubricant material. Furthermore, there exists no quantitative correlation between the mobility increase for ultra-thin liquid lubricant films and the viscosity decrease in bulk lubricant materials due to a rise in the temperature. It was also found that among the test lubricants, A20H2000 has the highest robustness for temperature change. In addition, it could be observed that the evaporation of the mobile fraction of lubricants occurred remarkably over a temperature range of 50– 80 °C.
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STLE/ASME 2008 International Joint Tribology Conference
October 20–22, 2008
Miami, Florida, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4336-9
PROCEEDINGS PAPER
Effect of Temperature on the Spreading Characteristics of Molecularly Thin Liquid Lubricant Films in Hard Disk Drives
Norio Tagawa,
Norio Tagawa
Kansai University, Suita, Osaka, Japan
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Kenta Mori,
Kenta Mori
Aisin Seiki Co., Ltd., Kariya, Aichi, Japan
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Atsunobu Mori,
Atsunobu Mori
Kansai University, Suita, Osaka, Japan
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Masako Ikegami
Masako Ikegami
MORESCO, Kobe, Hyogo, Japan
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Norio Tagawa
Kansai University, Suita, Osaka, Japan
Kenta Mori
Aisin Seiki Co., Ltd., Kariya, Aichi, Japan
Atsunobu Mori
Kansai University, Suita, Osaka, Japan
Masako Ikegami
MORESCO, Kobe, Hyogo, Japan
Paper No:
IJTC2008-71035, pp. 669-671; 3 pages
Published Online:
June 5, 2009
Citation
Tagawa, N, Mori, K, Mori, A, & Ikegami, M. "Effect of Temperature on the Spreading Characteristics of Molecularly Thin Liquid Lubricant Films in Hard Disk Drives." Proceedings of the STLE/ASME 2008 International Joint Tribology Conference. STLE/ASME 2008 International Joint Tribology Conference. Miami, Florida, USA. October 20–22, 2008. pp. 669-671. ASME. https://doi.org/10.1115/IJTC2008-71035
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