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 | |
| Publication status | Published - 2004 Jan 1 |
| Event | 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 - Seoul, Korea, Republic of Duration: 2004 Aug 16 → 2004 Aug 19 |
Other
| Other | 2004 Asia-Pacific Magnetic Recording Conference, APMRC 2004 |
|---|---|
| Country | Korea, Republic of |
| City | Seoul |
| Period | 04/8/16 → 04/8/19 |
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Cite this
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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.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Effect of relative humidity, disk acceleration, and dwell time on tribocharge build-up at a slider disk interface
AU - Lee, Dae Young
AU - Lee, Jaeho
AU - Hwang, Jungho
AU - Choa, Sung Hoon
PY - 2004/1/1
Y1 - 2004/1/1
N2 - 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.
AB - 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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U2 - 10.1109/APMRC.2004.1521965
DO - 10.1109/APMRC.2004.1521965
M3 - Conference contribution
SP - 89
EP - 90
BT - Asia-Pacific Magnetic Recording Conference 2004, Digest of APMRC 2004
PB - Institute of Electrical and Electronics Engineers Inc.
ER -