IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Magnetic Recording Topical Conference Wednesday Sessions
       Session MR+MI+AS+SE-WeM

Invited Paper MR+MI+AS+SE-WeM3
The Ever Changing Disk Drive Environment: Can Filter Technology Keep Pace?

Wednesday, October 31, 2001, 9:00 am, Room 110

Session: Magnetic Recording: Tribology & Integration
Presenter: A.J. Dallas, Donaldson Co., Inc.
Authors: A.J. Dallas, Donaldson Co., Inc.
J. Joriman, Donaldson Co., Inc.
L. Ding, Donaldson Co., Inc.
D. Arends, Donaldson Co., Inc.
S.B. Miller, III, Donaldson Co., Inc.
Correspondent: Click to Email
The cleanliness of the internal environment of a disk drive is critical to its reliability, performance, and longevity. As a result, we have seen particulate and chemical filters become commonplace in the design of disk drives of all types and sizes. The incorporation of chemical filters into the disk drive environment has proven to be an effective means of controlling the humidity and contamination level. Generally, silica gel is used to control the humidity level, whereas carbon and chemically-treated activated carbon are used to minimize organic and acid gas contamination levels. As disk drive technology moves into the future, chemical filtration is expected to play an ever-increasing role in the overall drive’s performance. How will filter technology change to meet these requirements? This presentation will provide an overview of chemical filtration, filter design, and the current technology. In addition, we intend to focus on: 1) test methods designed to evaluate and identify internal drive contamination; 2) test methods to evaluate materials used in chemical filters; 3) chemical filter performance; 4) extending test methods and chemical filters to low contaminant concentrations; 5) targeting specific chemical species with chemical filters; 6) humidity control; and 7) the future of chemical filtration.