A study of three-body particle generation and subsequent pole tip recession in linear tape recording heads

Shi, Baoping; Sullivan, J. L.; Wild, M.A.; Saied, S.O.

doi:10.1016/j.triboint.2005.01.027

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2014

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“…In the precision lapping process, PTR occurs due to the removal of materials from the pole tip (NiFe/NiCoFe). Studies have mainly focused on the correlation between PTR and mechanical parameters, such as load, lapping time, diamond size, abrasive mechanism/model, and test methods (Goldade & Bhushan, 2002; Scott & Bhushan, 2002; Zhong, 2002; Kwon et al, 2005; Ortiz-Merino & Todd, 2005; Shi et al, 2005; Mirian et al, 2011). Besides mechanical factors, the choice of lubricant plays an important role for PTR and surface finish.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Lubricants on the Precision Lapping Process

et al. 2014

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The impact of lubricants on pole-tip recession and surface morphology of hard disk drive heads in the precision lapping process was investigated with atomic force microscopy, scanning electron microscopy, and auger electron spectroscopy. In particular, the effects of deionized water, hydrocarbon oil, ethanediol, isopropanol, and ethanol lubricants were evaluated. The results reveal that proper selection of lubricant is critical for achieving optimal performance in the lapping process. A mixture of 68% hydrocarbon oil, 30% isopropanol, and 2% octadecenoic acid was found to yield the most favorable results, displaying a writer shield recession, first shield of reader recession, and surface roughness of 0.423, 0.581, and 0.242 nm, respectively.

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