Simulation of particle rebounding from the slider air bearing surface

Numerical analysis of the adsorbed film thickness at the air bearing surface is conducted using the non-Langmuir adsorption model. It is found that the adsorbed film at the air bearing surface becomes significant when the viscosity of adsorbed film is higher than about 1 Pa s. The adsorbed contaminant will accumulate at the rear end of the slider, and it is possible that the accumulated liquid-like contaminant may form a liquid tail which will directly contact with the disk surface, resulting in a crush of the head/disk interface.

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Estimation of Various Methods to Measure the Optical Phase Delay of the Slider Air Bearing Surface with Protection Layers.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.64.2974 ◽

1998 ◽

Vol 64 (624) ◽

pp. 2974-2982

Author(s):

Fumitaka MURANUSHI

Keyword(s):

Phase Delay ◽

Air Bearing ◽

Bearing Surface ◽

Optical Phase ◽

Slider Air Bearing

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Slider Curvature Control through Dicing Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.103.92 ◽

2011 ◽

Vol 103 ◽

pp. 92-96

Author(s):

Chirawat Srisang ◽

Krisda Siangchaew ◽

Jakrapong Kaewkhao ◽

Artorn Pokaipisit ◽

Pichet Limsuwan

Keyword(s):

Feed Rate ◽

Cutting Speed ◽

Air Bearing ◽

Bearing Surface ◽

Separation Processes ◽

Slider Air Bearing ◽

Fly Height ◽

Curvature Control

In the manufacturing of slider, the final step is a dicing process of the rowbars into individual slider. However, in all slider separation processes seem to affect the curvature of the slider air bearing surface (ABS). As a result, the change in ABS crown and camber which can significantly affect the fly height of the slider. This paper investigates the influence of three types of dicing process, with the same feed rate and cutting speed, on the ABS curvature.

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Hard disc drive air bearing design: modified DIRECT algorithm and its application to slider air bearing surface optimization

Tribology International ◽

10.1016/s0301-679x(03)00036-7 ◽

2004 ◽

Vol 37 (2) ◽

pp. 193-201 ◽

Cited By ~ 21

Author(s):

Hong Zhu ◽

David B. Bogy

Keyword(s):

Direct Algorithm ◽

Air Bearing ◽

Bearing Surface ◽

Hard Disc Drive ◽

Slider Air Bearing ◽

Bearing Design ◽

Surface Optimization ◽

Disc Drive

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Meniscus Adhesion at Ultra-Low Flying Slider-Disk Interfaces

World Tribology Congress III, Volume 1 ◽

10.1115/wtc2005-63180 ◽

2005 ◽

Cited By ~ 2

Author(s):

C. Mathew Mate ◽

Robert N. Payne ◽

Peter Baumgart ◽

Kathy Kuboi

Keyword(s):

Experimental Evidence ◽

Van Der Waals ◽

Adhesive Force ◽

Air Bearing ◽

Disk Drives ◽

Bearing Surface ◽

Slider Air Bearing ◽

Adhesive Forces

As head-disk spacings in disk drives approach a few nanometers, adhesive forces between the slider and disk can drastically alter the slider flying dynamics. At these small separations, it is still unclear, however, what type of adhesive force dominates. Most previous studies have concentrated on van der Waals and electrostatic attractive forces [1], which are readily incorporated into air bearing simulations. In this talk, we provide experimental evidence that the dominant adhesive force originates from menisci forming around the low flying portions of the slider air-bearing-surface as the spacing transitions from near-contact to contact.

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Slider Air Bearing Design in Consideration of the Pumping Effect

ASME/STLE 2011 Joint Tribology Conference ◽

10.1115/ijtc2011-61033 ◽

2011 ◽

Author(s):

Bo Zhang ◽

Toshifumi Mawatari ◽

Akira Nakajima

Keyword(s):

Shear Stress ◽

Disk Drive ◽

Critical Value ◽

Air Bearing ◽

Bearing Surface ◽

Pumping Effect ◽

Slider Air Bearing ◽

Different Types ◽

Bearing Design ◽

Air Film

The pumping effect proposed by the authors is used to analyze the contamination of the air bearing in hard disk drive. Three different types of air bearing surface are considered in the focus on the accumulation of the contamination at the rear pad where the minimum spacing is located. It is found that the contamination tends to accumulate at both the front and the rear ends of the air bearing surface pad where the shear stress of air film is interrupted due to due to the dramatic change in the spacing. The accumulation at the tailing edge of the air bearing is the most detrimental. The thickness of adsorbed film at the tailing edge increases suddenly when the terrace length at the tailing edge exceeds a critical value, which is in between 15 μm and 35 μm in this article.

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