Analysis of Deposits from Friction at Head-Tape Interfaces by Raman Spectroscopy

Liew, Y. F.; Lauer, J. L.; Talke, Frank E.; Connell, K.

doi:10.1080/10402009508983465

Cited by 11 publications

(2 citation statements)

References 6 publications

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“…The outermost surface asperities separating the tape from the head are worn more, bringing the magnetic particles closer to the head sooner. Liew et al [13] have also suggested that wear causes the outermost tape layer to be removed.…”

Section: Tape Wear By Shuttling and Stain Growthmentioning

confidence: 99%

Analysis of stain formation and wear mechanisms in a linear tape drive

Kattner

Bhushan

2000

Proceedings of the Institution of Mechanical Engineers, Part J:

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Magnetic reliability of a linear tape drive is intimately related to the tribology at the head±tape interface because an increase in the spacing between the read element of the head and the magnetic particles in the tape reduces the strength of the magnetic signal read from the tape. In this study, Co±ã-Fe 2 O 3 tape was worn against magnetoresistive (MR) heads in a modified commercial tape drive. Friction, the head output and the number of drop-outs were used to determine the wear mechanisms at the head± tape interface. Additionally, atomic force microscope (AFM) measurements, Auger material composition analysis and stain thickness measurement using a nanoindentation scratch test were used to support the friction and magnetic data. Using these methods, it was found that three different wear mechanisms occur at the head±tape interface, which first involves adhesion building a stain on the head surface, followed by the cyclic wearing and accumulation of the stain. Finally, the tape binder is sufficiently worn away, causing the stain to be permanently removed by abrasion of the hard magnetic particles. The life of the head±tape interface can be improved by cleaning the stain from the head with an abrasive tape before the stain becomes too thick. Therefore, if only one tape was used in the lifetime of the head, the head would need to be cleaned only once because the tape has a finite amount of stain-producing material available. However, if the stain thickness is reduced too much, the head±tape interface will not function without an increase in stain material because the presence of the stain provides lubrication without which the friction at the head± tape interface exceeds the motor force, causing the drive to stop.

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Section: Tape Wear By Shuttling and Stain Growthmentioning

confidence: 99%

Analysis of stain formation and wear mechanisms in a linear tape drive

Kattner

Bhushan

2000

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Brown stains were been observed on magnetic heads running against metal particulate (MP) tape [1][2][3][4][5][6][7][8][9][10][11][12][13]. The occurrence of brown stains is a complex tribological and chemical phenomenon on the head/tape interface.…”

Section: Introductionmentioning

confidence: 99%

Brown stains with MP tape and thermal stability of metal particles

Tetsukawa

Inoue

Kondo

2004

Journal of Magnetism and Magnetic Materials

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Tribological behaviour of MW PACVD diamond coatings in vibrating contacts

Skopp¹,

Klaffke²,

Buchkremer-Hermanns³

et al. 1997

Tribotest

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Six diamond coatings were produced by microwave plasma-assisted chemical vapour deposition ( M W PACVD) on polished S i c substrates.Process gas pressure and process gas composition were varied systematically, resulting in different coating morphologies, roughnesses and grain sizes.Friction and wear were investigated for unlubricated vibrating contact conditions in air at room temperature. Tribological tests on diamond coatings were performed in a ball-on-disc configuration, with steel balls (100Cr6) and alumina balls acting as counterbodies. For comparison of the tribological performance of the diamond coatings, standard tests were performed with a stroke of 200 pm, a load of 10 N, and a frequency of 20 Hz. The effect of relative humidify (RH) was investigated by testing in dry (3% RH), in normal (50% RH), and in moist air (1 00% RH), respectively To investigate running-in effects and wear propagation, the test duration (lo4, lo5, and 1.2.106 sliding cycles) was varied.For steelldiamond pairings, high wear at the steel ball and high friction were measured, influenced by roughness and grain size of the diamond coating and by relative humidity. For A1203 against diamond, a pronounced running-in of friction and wear was found. High friction and high wear at the beginning of each test are followed by a stationa y phase with extremely low friction coefficients (I 0.05) and with wear rates below the limit of resolution. This running-in depends on grain size and roughness of the coating, on relative humidity, as well as on the operational parameters. Surface analysis using SEM, EDX, LRS and A F M was conducted, to investigate tribologically induced surface changes. diamond coatings, chemical vapour deposition, M W PACVD, vibrating contacts, steelldiamond pairings, running-in, wear, S E M , E D X ,

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Analysis of Deposits from Friction at Head-Tape Interfaces by Raman Spectroscopy

Cited by 11 publications

References 6 publications

Analysis of stain formation and wear mechanisms in a linear tape drive

Analysis of stain formation and wear mechanisms in a linear tape drive

Brown stains with MP tape and thermal stability of metal particles

Tribological behaviour of MW PACVD diamond coatings in vibrating contacts

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