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TECHNICAL PAPERS

Thermal Asperities Sensitivity to Particles: Methodology and Test Results

[+] Author and Article Information
Larry Y. Wang, Mike Sullivan, Jim Chao

HMT Technology Corporation, 1055 Page Avenue, Fremont, CA 94538

J. Tribol 123(2), 376-379 (Jun 16, 2000) (4 pages) doi:10.1115/1.1308002 History: Received February 15, 2000; Revised June 16, 2000
Copyright © 2001 by ASME
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References

Blok, H., 1937, “Theoretical Study of Temperature Rise at Surface of Actual Contact Under Oiliness Lubricant Conditions,” Proc. Gen. Disc. Lubrication, Part 2, Institute of Mechanical Engineers, London, Vol. 2, pp. 222–235.
Jaeger,  J. C., 1942, “Moving Sources of Heat and the Temperature at Sliding Contacts,” Proc. R. Soc. N.S.W.,76, pp. 203–224.
Archard,  J. C., 1958, “The Temperature of Rubbing Surfaces,” Wear, 2, pp. 438–455.
Wang,  Y., and Rodkiewicz,  C. M., 1994, “Temperature Maps of Pin-on-Disk Configuration in Dry Sliding,” Tribol. Int., 27, pp. 259–266.
Ettles,  C. M. McC., 1986, “Possible Flash Temperatures in Slider and Recording Disk Transient Contact,” ASLE Trans., 29, pp. 321–328.
Bhushan,  B., 1992, “Magnetic Head-Media Interface Temperatures — Part 3: Application to Rigid Disks,” ASME J. Tribol., 114, pp. 420–430.
Li,  Y., and Kumaran,  A. R., 1993, “The Determination of Flash Temperature in Intermittent Magnetic Head/Disk Contacts Using Magnetoresistive Heads: Part I-Model and Laser Simulation,” ASME J. Tribol., 115, pp. 170–178.
Klaassen,  K. B., and van Peppen,  J. C. L., 1997, “Electronic Abatement of Thermal Interference in (G)MR Head Output Signals,” IEEE Trans. Magn., 33, No. 5, pp. 2611–2616.
Galbraith,  R. L., Kerwin,  G. J., and Poss,  J. M., 1992, “Magneto-Resistive Head Thermal Asperity Digital Compensation,” IEEE Trans. Magn., 28, pp. 2731–2732.
Zhang,  S., and Bogy,  D. B., 1998, “Slider Designs for Controlling Contamination,” ASME J. Tribol., 119, pp. 537–540.
Zhang,  S., Wang,  L. Y., Jones,  P., and Lopatin,  G., 1999, “Numerical and Experimental Study of the Particle Contamination in a Head/Media Interface,” IEEE Trans. Magn., 35, pp. 2442–2444.
Ludema, K. C., 1996, Friction, Wear and Lubrication, Chemical Rubber Corp., Boca Raton, FL.

Figures

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Diagram of experimental setup
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Diagram of atomizer mechanism
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Particle size distribution in the chamber
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A typical TA event caused by particle
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Tyipcal TA counts versus scan cycles under in situ air-borne particle injection
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(a), (b) Particles on the disk after 30-cycle TA scans (ID-OD): (a) MD and (b) OD
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The effect of particle concentration on TA sensitivity
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The influence of lubricant thickness on TA sensitivity to particles
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The effect of type of carbon overcoats on TA sensitivity to particles
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The influence of lubricant types on TA sensitivity to particles

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