Plasticity Index for Contact Between a Head and a Disk With Crater-Shaped Laser Bumps

[+] Author and Article Information
Q. Zhao, F. E. Talke

Center for Magnetic Recording Research, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093

J. Tribol 122(1), 269-273 (Jul 21, 1999) (5 pages) doi:10.1115/1.555353 History: Received March 04, 1999; Revised July 21, 1999
Copyright © 2000 by ASME
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Greenwood,  J. A., and Williamson,  J. B. P., 1966, “Contact of Nominally Flat Surfaces,” Proc. R. Soc. London, Ser. A, 295, pp. 300–319.
Arnell, R. D., Davies, P. B., Halling, J., and Whomes, T. L., ed. by Halling, 1993, Tribology, Principles and Design Applications, Springer-Verlag, New York, pp. 23–26.
Nayak,  P. R., 1973, “Random Process Model of Rough Surfaces in Plastic Contact,” Wear, 26, pp. 305–333.
Bush,  A. W., Gibson,  R. D., and Keogh,  G. P., 1979, “Strongly Anisotropic Rough Surfaces,” ASME J. Lubr. Technol., 101, pp. 15–20.
McCool,  J. I., 1986, “Predicting Microfracture in Ceramics via a Microcontact Model,” ASME J. Tribol., 108, pp. 380–386.
Kotwal,  C. A., and Bhushan,  B., 1996, “Contact Analysis of Non-Gaussian Surfaces for Minimum Static and Kinetic Friction and Wear,” Tribol. Trans., 39, pp. 890–898.
Francis,  H. A., 1977, “Application of Spherical Indentation Mechanics to Reversible and Irreversible Contact between Rough Surfaces,” Wear, 45, pp. 221–269.
Bhushan,  B., 1984, “Analysis of the Real Area of Contact between a Polymeric Magnetic Medium and a Rigid Surface,” ASME J. Tribol., 106, pp. 26–34.
Chang,  W. R., Etsion,  I., and Bogy,  D. B., 1987, “An Elastic-Plastic Model for the Contact of Rough Surfaces,” ASME J. Tribol., 109, pp. 257–263.
Onions,  R. A., and Archard,  J. F., 1973, “The Contact of Surfaces Having a Random Structure,” J. Phys. D, 6, pp. 289–304.
Bhushan,  B., 1996, “Contact Mechanics of Rough Surfaces in Tribology: Single Asperity Contact,” Appl. Mech. Rev., 49, pp. 275–298.
Bhushan,  B., 1998, “Contact Mechanics of Rough Surfaces in Tribology: Multiple Asperity Contact,” Tribol. Lett., 4, pp. 1–35.
Johnson, K. L., 1996, Contact Mechanics, Cambridge University Press, New York, pp. 129–134, pp. 154–155.
Li,  Y., and Talke,  F. E., 1992, “A Model for the Effect of Humidity on Stiction of the Head/Disk Interface,” Tribol. Trans., 35, pp. 429–434.
Tian,  H., and Matsudaira,  T., 1993, “The Role of Relative Humidity, Surface Roughness and Liquid Build-up on Static Friction Behavior of the Head/Disk Interface,” ASME J. Tribol., 115, pp. 28–35.
Gao,  C., Tian,  X., and Bhushan,  B., 1995, “A Meniscus Model for Optimization of Texturing and Liquid Lubrication of Magnetic Thin-Film Rigid Disks,” Tribol. Trans., 38, pp. 201–212.
Gui,  J., and Marchon,  B., 1995, “A Stiction Model for a Head-Disk Interface of a Rigid Disc Drive,” J. Appl. Phys., 78, pp. 4206–4217.
Chilamakuri,  S., and Bhushan,  B., 1997, “Optimization of Asperities for Laser-Textured Magnetic Disk Surfaces,” Tribol. Trans., 40, pp. 303–311.
Bhushan,  B., Kotwal,  C. A., and Chilamakuri,  S. K., 1998, “Kinetic Meniscus Model for Prediction of Rest Stiction,” ASME J. Tribol., 120, pp. 42–53.
Tanaka,  K., and Kusumi,  T., 1998, “Elastic Contact and Friction between Sliders and Circumferentially Textured Disks—Part I: Analytical Model,” ASME J. Tribol., 120, pp. 28–34.
Chilamakuri,  S., and Bhushan,  B., 1999, “Contact Analysis of Laser Textured Disks in Magnetic Head-Disk Interface,” Wear, 230, pp. 11–23.
Gui,  J., Kuo,  D., Marchon,  B., and Rauch,  G. C., 1997, “A Stiction Model for a Head-Disc Interface: Experimental,” IEEE Trans. Magn., 33, No. 1, pp. 932–937.
Bennett,  T. D., Baumgart,  P., Tam,  A. C., and Grigoropoulos,  C. P., 1997, “Modeling Stiction of Laser-Texture,” IEEE Trans. Magn., 33, pp. 3205–3207.
Bhushan, B., 1996, Tribology and Mechanics of Magnetic Storage Devices, 2nd ed., Springer, New York.
Tian,  X., and Bhushan,  B., 1996, “A Numerical Three-Dimensional Model for the Contact of Rough Surfaces by Variational Principle,” ASME J. Tribol., 118, pp. 33–42.
Knigge,  B., Zhao,  Q., Talke,  F. E., and Baumgart,  P., 1998, “Tribological Properties and Environmental Effects of Nano and Pico Sliders on Laser Textured Media,” IEEE Trans. Magn., 34, pp. 1732–1734.
Zhao, Q., and Talke, F. E., 1999, “Stiction and Deformation Analysis of Laser Textured Media with Crater-Shaped Laser Bumps,” Tribol. Trans., in press.


Grahic Jump Location
Schematic of the contact between a semi-sphere and a plane
Grahic Jump Location
AFM picture of a typical crater-shaped laser bump. (a) 3D and (b) cross-section.
Grahic Jump Location
Schematics of contact between a circular cylinder and a plane
Grahic Jump Location
The shape coefficient s versus the composite Young’s modulus/hardness ratio E*/H
Grahic Jump Location
Plasticity index (ψc) versus rim radius (R1) of laser bumps. E*/H is the ratio of the composite Young’s modulus and hardness and σ is the standard deviation of the laser bump height.
Grahic Jump Location
Plasticity indexes for (a) “cylinder-on-plane” contacts and (b) for “sphere-on-plane” contacts as a function of the head/disk separation and the standard deviation of the height of the laser bumps




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