Ionic Liquid Lubricant with Ammonium Salts for Magnetic Media

Kondo, Hirofumi

doi:10.5772/23244

Cited by 2 publications

(1 citation statement)

References 55 publications

(39 reference statements)

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“…In particular, the carbon overcoat is necessary to prevent wear and corrosion problems, even if this activity is mainly carried out by the thin lubricant that must reduce the contact between the read/write magnetic head and the media surface. Perfluoropolyether (PFPEs) lubricants have so far been the best lubricating system for magnetic media, even if Kondo et al have, over time, developed synthetic methodologies to prepare ILs, possessing both a perfluoroalkyl group and an ester, amide, and carboxylic acid ammonium salt with a long chain (Table 7) [116].…”

Section: Other Applications I: Magnetic Mediamentioning

confidence: 99%

A Presentation of Ionic Liquids as Lubricants: Some Critical Comments

et al. 2021

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Ionic liquids (ILs) are liquid materials at room temperature with an ionic intrinsic nature. The electrostatic interactions therefore play a pivotal role in dictating their inner structure, which is then expected to be far from the traditional pattern of classical simple liquids. Therefore, the strength of such interactions and their long-range effects are responsible for the ionic liquid high viscosity, a fact that itself suggests their possible use as lubricants. More interestingly, the possibility to establish a wide scenario of possible interactions with solid surfaces constitutes a specific added value in this use. In this framework, the ionic liquid complex molecular structure and the huge variety of possible interactions cause a complex aggregation pattern which can depend on the presence of the solid surface itself. Although there is plenty of literature focusing on the lubricant properties of ionic liquids and their applications, the aim of this contribution is, instead, to furnish to the reader a panoramic view of this exciting problematic, commenting on interesting and speculative aspects which are sometimes neglected in standard works and trying to furnish an enriched vision of the topic. The present work constitutes an easy-to-read critical point of view which tries to interact with the imagination of readers, hopefully leading to the discovery of novel aspects and interconnections and ultimately stimulating new ideas and research.

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Section: Other Applications I: Magnetic Mediamentioning

confidence: 99%

A Presentation of Ionic Liquids as Lubricants: Some Critical Comments

et al. 2021

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PFPE Lubricant Molecular Weight Effects on Slider-Disk Interactions

et al. 2014

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Slider wear is investigated as a function of D-4OH lubricant film thickness and molecular weight. Slider wear increases with decreasing lubricant film thickness and with increasing molecular weight when compared at the same film thickness in the submonolayer film thickness regime. The two sets of observations are readily interpreted on the basis of the monolayer fraction which corrects the film thickness for the molecular weight-dependent surface coverage.

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Ionic Liquid Lubricant with Ammonium Salts for Magnetic Media

Cited by 2 publications

References 55 publications

A Presentation of Ionic Liquids as Lubricants: Some Critical Comments

A Presentation of Ionic Liquids as Lubricants: Some Critical Comments

PFPE Lubricant Molecular Weight Effects on Slider-Disk Interactions

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