Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface

Dae Young Lee; Jaeho Lee; Jungho Hwang; Sung Hoon Choa

doi:10.1109/APMRC.2004.1521965

Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface

Dae Young Lee, Jaeho Lee, Jungho Hwang, Sung Hoon Choa

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

High performance disk drives require high spindle speed. The spindle speed of typical hard disk drives has increased in recent years. The increasing disk velocity leads to increasing disk acceleration and slider-disk interaction. The slider-disk interaction in CSS (contact-start-stop) mode is an important source of particle generation and tribocharge. Charge build-up in the slider-disk interface can cause ESD (electrostatic discharge) damage and lubricant decomposition. We measured the tribocurrent/voltage build-up generated at increasing disk acceleration. In addition, we examined the effects of relative humidity and dwell time on the tribocharge build-up. We found that the tribocurrent/voltage was generated during picoslider/ disk interaction and its level was about 3-16 pA and 0.1-0.3 V, respectively. Tribocurrent/voltage build-up was reduced with increasing disk acceleration. Higher humidity conditions (75 - 80%) yielded lower levels of tribovoltage/current. Dwell time affected the charge build-up at the slider-disk interface. The degree of tribocharge build-up increased with increasing dwell time.

Original language	English
Title of host publication	Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	89-90
Number of pages	2
ISBN (Electronic)	0780387171, 9780780387171
DOIs	https://doi.org/10.1109/APMRC.2004.1521965
Publication status	Published - 2004
Event	2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of Duration: 2004 Aug 16 → 2004 Aug 19

Publication series

Name	Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004

Other

Other	2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004
Country/Territory	Korea, Republic of
City	Seoul
Period	04/8/16 → 04/8/19

Bibliographical note

Publisher Copyright:
© 2004 IEEE.

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Access to Document

10.1109/APMRC.2004.1521965

Cite this

Lee, D. Y., Lee, J., Hwang, J., & Choa, S. H. (2004). Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004 (pp. 89-90). [1521965] (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMRC.2004.1521965

Lee, Dae Young ; Lee, Jaeho ; Hwang, Jungho ; Choa, Sung Hoon. / Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface. Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. pp. 89-90 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).

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title = "Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface",

abstract = "High performance disk drives require high spindle speed. The spindle speed of typical hard disk drives has increased in recent years. The increasing disk velocity leads to increasing disk acceleration and slider-disk interaction. The slider-disk interaction in CSS (contact-start-stop) mode is an important source of particle generation and tribocharge. Charge build-up in the slider-disk interface can cause ESD (electrostatic discharge) damage and lubricant decomposition. We measured the tribocurrent/voltage build-up generated at increasing disk acceleration. In addition, we examined the effects of relative humidity and dwell time on the tribocharge build-up. We found that the tribocurrent/voltage was generated during picoslider/ disk interaction and its level was about 3-16 pA and 0.1-0.3 V, respectively. Tribocurrent/voltage build-up was reduced with increasing disk acceleration. Higher humidity conditions (75 - 80%) yielded lower levels of tribovoltage/current. Dwell time affected the charge build-up at the slider-disk interface. The degree of tribocharge build-up increased with increasing dwell time.",

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Lee, DY, Lee, J, Hwang, J & Choa, SH 2004, Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface. in Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004., 1521965, Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004, Institute of Electrical and Electronics Engineers Inc., pp. 89-90, 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004, Seoul, Korea, Republic of, 04/8/16. https://doi.org/10.1109/APMRC.2004.1521965

Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface. / Lee, Dae Young; Lee, Jaeho; Hwang, Jungho; Choa, Sung Hoon.

Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc., 2004. p. 89-90 1521965 (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Lee DY, Lee J, Hwang J, Choa SH. Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface. In Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004. Institute of Electrical and Electronics Engineers Inc. 2004. p. 89-90. 1521965. (Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004). https://doi.org/10.1109/APMRC.2004.1521965

Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface

Abstract

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