A means of avoiding the negative consequences of ultra low flying super smooth Head/Disk Interfaces (HDIs) is to use textured sliders while still maintaining super smooth magnetic media. In this paper, the effect of preferential texturing (roughening) of slider air-bearing surfaces (ABS) on the intermolecular/adhesion forces at HDIs is investigated using a quasi-dynamic adhesion model. Super smooth (untextured), preferentially textured and rough sliders were investigated in this study. First, they were measured using an Atomic Force Microscope (AFM) and subsequently roughness parameters were extracted and used in the modeling. Preferential texturing provides a unique roughening of the ABS, where parts of the original surface are not affected, thus maintaining the initial roughness, with other parts of the surface being removed. This texturing has the net effect of reducing the effective or nominal area of contact between the slider and media surfaces, which plays an important role in the adhesion forces at the HDI. The simulation results indicate that preferential texturing can alleviate the problem of high adhesion forces in ultra-low flying HDI’s.
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ASME/STLE 2002 International Joint Tribology Conference
October 27–30, 2002
Cancun, Mexico
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-3660-6
PROCEEDINGS PAPER
Textured Sliders as Means to Reduce Adhesion in Ultra Low Flying Head Disk Interfaces
Allison Y. Suh,
Allison Y. Suh
University of Illinois at Urbana-Champaign, Urbana, IL
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Sung-Chang Lee,
Sung-Chang Lee
University of Illinois at Urbana-Champaign, Urbana, IL
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Andreas A. Polycarpou
Andreas A. Polycarpou
University of Illinois at Urbana-Champaign, Urbana, IL
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Allison Y. Suh
University of Illinois at Urbana-Champaign, Urbana, IL
Sung-Chang Lee
University of Illinois at Urbana-Champaign, Urbana, IL
Andreas A. Polycarpou
University of Illinois at Urbana-Champaign, Urbana, IL
Paper No:
2002-TRIB-0256, pp. 51-55; 5 pages
Published Online:
February 4, 2009
Citation
Suh, AY, Lee, S, & Polycarpou, AA. "Textured Sliders as Means to Reduce Adhesion in Ultra Low Flying Head Disk Interfaces." Proceedings of the ASME/STLE 2002 International Joint Tribology Conference. Magnetic Storage Symposium: Frontiers of Magnetic Hard Disk Drive Tribology and Technology. Cancun, Mexico. October 27–30, 2002. pp. 51-55. ASME. https://doi.org/10.1115/2002-TRIB-0256
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