Stiction model for a head-disc interface of a rigid disc drive

Details Stiction model for a head-disc interface of a rigid disc drive Stiction model for a head-disc interface of a rigid disc drive

1996-07-08

1998-04-21

Voeltz, Emanuel T.

Boots, shoes, and leggings

360105, G01D 3028

Patent

active

057425183

ABSTRACT:
A quantitative stiction model for HDI has been proposed, which takes into account local redistribution of lubricant and its effect on meniscus formation. Equations for calculating stiction have been obtained for three distinct situations, depending on the ratio of the interface separation to the lubricant film thickness and the interactions among contacting asperities. The model has been applied to HDIs consisting of either regular or random texture. The model predicts that the relationship between stiction and the real area of contact is not necessarily monotonic. Instead, stiction exhibits a broad minimum for intermediate values of true contact. This prediction is consistent with some of the experimental results reported in the literature. The model also suggests that the role of various roughness parameters on stiction are not independent of one another. To minimize stiction and maximize reliability under a given flyability constraint, the asperity height, radius and density need to be considered simultaneously.

REFERENCES:
patent: 5289387 (1994-02-01), Higo et al.
J.A. Greenwood and J.B.P. Williamson, "Contact of Nominally Flat Surfaces," Burndy Corporation Research Division, Apr. 1966, pp. 300-319.
Bowden, et al., "The Friction and Lubrication of Solids," Oxford Press, 1986, pp. 299-307.
M.J Matthewson and H.J. Mamin, "Liquid Mediated Adhesion of Ultra-Flat Solid Surfaces," Met Res Soc Proc, vol. 119, 1988, pp. 87-92.
Naum V. Gitis, et al., "Long-Term Stiction at the Magnetic Thin-Film Disk-Slider Interface," Adv. Info. Storage Syst., vol. 3, 1991, pp. 91-105.
Hong Tian and Takeo Matsudaira, "The Role of Relative Humidity, Surface Roughness and Liquid Build-Up on Static Friction Behavior of the Head/Disk Interface," Hoya Electronics Corporation, Oct. 1992, pp. 1-10.
Chao Gao, et al., "A Meniscus Model for Optimization of Texturing and Liquid Lubrication of Magnetic Thin-Film Rigid Disks," Tribology Transactions, vol. 38 (1995), pp. 201-212.
Yufeng Li and Frank E. Talke, "A Model for the Effect of Humidity on Stiction of the Head/Disk Interface," Seagate Technology, pp. 79-84.

Affiliated with

Also associated with

Rating

Stiction model for a head-disc interface of a rigid disc drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stiction model for a head-disc interface of a rigid disc drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stiction model for a head-disc interface of a rigid disc drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2064759