Abstract
An entrapped particle on the slider’s air bearing damages the surface of the slider or the disk. The study of particle movement on and the particle adhesion mechanism onto the slider surface is critical to reduce entrapped particle-induced damage. In this paper, we proposed a dynamical model of the adhesive particle’s secondary migration on the slider surface. The model predicts whether the adhered particle will remain static by the action of the aerodynamic and adhesion forces. There are three migration movement styles which are rolling, sliding and lifting away from the original adhered location. Further, particle rolling migration behaviors on the slider air bearing surface (ABS) are analyzed considering the effects of flow shear rate, particle diameter and properties. Finally, the particle migration trajectory and velocity with time on the investigated slider are presented. It was found that most particles that adhere to the slider surface remain static for the investigated slider; pure rolling motion on the slider ABS is the main migration styles. The particle with a larger diameter and air shear rate speeds up to a higher velocity, and it takes more time to speed up to the constant velocity. A particle’s secondary migration motion can be observed for the particle that adheres to the slider recession region and trailing pad. Then the particle enters airflow blowing out of or rolls away from the head-disk interface.
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References
Barnocky G, Davis RH (1988) The effect of Maxwell slip on the aerodynamic collision and rebound of spherical particle. J. Colloid Interface Sci 121:226–239
Bernhard H, Gurinder P (1994) Mechanism for formation of whiskers on a flying magnetic recording slider. IEEE Trans Magn 30:1499–1503
Chung KH, Oh JK, Moon JT, Kim DE (2004) Particle monitoring method using acoustic emission signal for analysis of slider/disk /particle interaction. Tribol Int 37:849–857
Derjaguin BV, Muller VM, Toporov YP (1975) Effect of contact deformations on the adhesion of particles. J Colloid Interface Sci 53:314–326
Hjemfelt AT, Mackros LF (1966) Motion of discrete particles in a turbulent fluid. Appl Sci Res 16:149–161
Ibrahim AH, Dunn PF, Qazi MF (2004) Microparticle detachment from surfaces exposed to turbulent air flow: microparticle motion afterdetachment. J Aerosol Sci 35:1189–1204
Ibrahim AH, Dunn PF, Qazi MF (2008) Experiments and validation of a model for microparticle detachment from a surface by turbulent air flow. J Aerosol Sci 39:645–656
Kurose R, Komori S (1999) Drag and lift forces on a rotating sphere in a linear shear flow. J Fluid Mech 384:183–206
Liu N, Bogy DB (2003) Particle contamination on a thermal flying-height control slider. Tribol Lett 37:93–97
Liu N, Bogy DB (2009) Boundary effect on particle motion in the head disk interface. Tribol Lett 33:21–27
Liu S, Li H, Shen S, Wu S (2015a) Simulation of particle trajectory in the head-disk interface. IEEE Trans Magn 51:1–4
Liu S, Shen S, Li H, Wu S (2015) Simulation of the interaction between particle and slider surface. In: Joint international conference on micromechatronics for information and precision equipment, Mop-05
Liu S, Li H, Shen S, Wu S (2016) Simulation of particle rebounding from the slider air bearing surface. Microsyst Technol 22:1475–1481
Maxey MR (1987) The motion of a small rigid sphere in a nonuniform flow. Phys Fluids 30:1579–1582
Maxey MR, Riley JJ (1983) Equation of motion for a small rigid sphere in a nonuniform flow. Phys Fluids 26:883–889
Ovcharenko A, Yang M, Chun K, Talke FE (2010) Simulation of magnetic erasure due to transient slider-disk contacts. IEEE Trans Magn 46:770
Ovcharenko A, Yang M, Chun K, Talke FE (2011) Transient slider-disk contacts in the presence of spherical contamination particles. Microsyst Technol 17:743–747
Roy M, Brand JL (2007) Soft particle-induce magnetic erasure without physical damage to the media. J Tribol 129:729–734
Shen X, Bogy DB (2003) Particle flow and contamination in slider air bearings for hard disk drives. J Tribol 125:358–363
Suh AY, Polycarpou AA (2005) Adhesive contact modeling for sub-5-nm ultralow flying magnetic storage head-disk interfaces including roughness effects. J Appl Phys 97:104328
Wahl MH, Lee PR, Talke FE (1996) An efficient finite element-based air bearing simulator for pivoted slider bearings using bi-conjugate gradient algorithms. Tribol Trans 39:130–138
Xu J, Tokisue H, Kawakubo Y (2000) Study on soft-particle intrusion in a head/disk interface of load/unload drives. IEEE Trans Magn 36:2745–2747
Xu J, Tokisue H, Tanaka H, Matsumoto M (2003) In-situ studies of contamination at hard-disk interface. Microsyst Technologies 9:250–255
Xue X, Polycarpou AA (2008) Meniscus model for noncontacting and contacting sphere-on-flat surfaces including elastic-plastic deformation. J Appl Phys 103:023502
Zeng Q, Pit R, Payne R, Baumgart P, Huang FY (2005) Modeling and simulation of hard-particle interaction in head/disk interfaces. IEEE Trans Magn 41:604–609
Zhang S, Bogy DB (1997) Effects of lift on the motion of particles in the recessed regions of a slider. Phys Fluids 9:1265–1272
Zhang S, Strom BD (2008) Predicting air bearing contamination using air flow pattern analysis. J Tribol 130:011002
Zhang L, Koka R, Yuen Y, Lam E (1999) Particle induced damage on heads and discs due to fine particles of different materials. IEEE Trans Magn 35:927–932
Acknowledgements
This work was supported by National Natural Science Foundation of China (Grant No. 51505342), the Fundamental Research Funds for the Central Universities of China (Grant No. 2042015kf0193), and the scholarship from China Scholarship Council (CSC) under the Grant CSC No. 201606275004. Authors gratefully acknowledge these supports.
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Liu, S., Li, H., Shen, S. et al. Study of adhered particle’s secondary migration on the slider air bearing surface. Microsyst Technol 23, 4871–4877 (2017). https://doi.org/10.1007/s00542-017-3280-5
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DOI: https://doi.org/10.1007/s00542-017-3280-5