Abstract
The newly synthesized perfluoropolyether (PFPE) whose terminal group is an ammonium salt with a carboxylic acid has better frictional and anti-corrosion properties when compared to the conventional PFPEs. The friction is almost independent of the PFPE structure, but depends on the amine structures. This modified PFPE uniformly covers the magnetic surfaces; this is why it not only reduces the friction, but also has an effect on the corrosion resistance.
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Fukuda, S., Ozue, T., Onodera, S.: Recording over 15 ktpi using multichannel heads in a tape system. IEEE. Trans. Magn. 42, 182–187 (2006). doi:10.1109/TMAG.2005.861762
Sekiguchi, N., Kawakami, K., Ozue, T., Yamaga, M., Onodera, S.: Examination of newly developed metal particle media for >3 gb/in/sup 2/recording in GMR-based tape systems. IEEE Trans. Magn. 41, 3235–3237 (2005). doi:10.1109/TMAG.2005.855246
Noma, K., Matsuoka, M., Kanai, H., Uehara, Y., Nomura, K., Awaji, N.: Ultra-high magnetic moment films for write head. IEEE Trans. Magn. 42, 140–142 (2006)
Bhushan, B.: Tribology and mechanics of magnetic storage devices, 2nd edn. Springer-Verlag, New York (1996)
Homola, A.M.: Lubrication issues in magnetic disk storage devices. IEEE Trans. Magn. 32, 1812–1818 (1996). doi:10.1109/20.492870
Lin, J., Wu, A.W.: Lubricants for magnetic rigid disks. International Tribology Conference, Nagoya, pp. 599–604 (1990)
Klaus, E.E., Bhushan, B.: Lubricants in magnetic media—a review. Tribol. Mech. Magn. Storage Syst. IV SP-19, 7–15 (1985)
Marchon, B., Dai, Q., Hendriks, F., Nayak, U.V.: Disk drive having reduced variation of disk surface lubricant layer thickness. US Patent 7002768, 2006
Liu, J., Stirniman, M.J., Gui, J.: Lubricant for thin film storage media. US Patent 6916531, 2005
Ishida, M., Nakakawaji, T., Ito, Y., Matsumoto, H., Tani, H., Ishihara, H.: Lubricant, magnetic disk and magnetic disk apparatus. US Patent 6869536, 2005
Gunsel, S., Venier, C., Chiu, I.-C.: Lubricant for magnetic recording medium and use thereof. US Patent 6667284, 2003
Liu, J., Stirniman, M.J., Gui, J.: Lubricant film containing additives for advanced tribological performance of magnetic storage medium. US Patent 7060377, 2006
Kondo, H., Uchimi, T.: Novel perfluoropolyether derivatives lubricants and magnetic recording medium using the same. US Patent 5453539, 1992
Klaus, E.E., Bhushan, B.: Lubricants in magnetic media. ASLE SP-19, 7–15 (1985)
Sheldon, R.: Catalytic reactions in ionic liquids. Chem. Commun. 2399–2403 (2001). doi:10.1039/b107270f
Ohno, H.: Electrochemical aspects of ionic liquids. Wiley-Interscience, Hoboken, NJ (2005)
Visser, A.E., Swatloski, R.P., Reichert, W.M., Davis Jr., J.H., Rogers, R.D., Mayton, R., Sheff, S., Wierzbicki, A.: Task-specific ionic liquids for the extraction of metal ions from aqueous solutions. Chem. Commun. 135–136 (2001)
Anderson, J.L., Armstrong, D.W.: High-stability ionic liquids. A new class of stationary phases for gas chromatography. Anal. Chem. 75, 4851–4858 (2003). doi:10.1021/ac0345749
Gordon, C.M.: New developments in catalysis using ionic liquids. Appl. Catal. Gen. 222, 101–117 (2001). doi:10.1016/S0926-860X(01)00834-1
Ye, C., Liu, W., Chen, Y., Yu, L.: Room temperature ionic liquids: a novel versatile lubricant. Chem. Commun. 2244–2246 (2001)
Liu, W., Ye, C., Gong, Q., Wang, H., Wang, P.: Tribological performance of room-temperature ionic liquids as lubricant. Tribol. Lett. 13, 81–85 (2002). doi:10.1023/A:1020148514877
Xu, W., Angel, C.A.: Science 302, 422 (2003). doi:10.1126/science.1090287
Yoshizawa, M., Xu, W., Angel, C.A.: Ionic liquids by proton transfer: vapor pressure, conductivity, and the relevance of pK a from aqueous solutions. J. Am. Chem. Soc. 125, 15411–15419 (2003). doi:10.1021/ja035783d
Greaves, T.L., Weerawardene, A., Fong, C., Krodkiewska, I., Drummond, C.J.: Protic ionic liquids: solvents with tunable phase behavior and physicochemical properties. Phys. Chem. B 110, 22479–22487 (2006). doi:10.1021/jp0634048
Kohler, F., Atrops, H., Kalall, H., Liebermann, E., Wilhelm, E., Ratkovics, F., et al.: Molecular interactions in mixtures of carboxylic acids with amines. 1. Melting curves viscosities. J. Phys. Chem. 85, 2520–2524 (1981)
Kohler, F., Gopal, R., Goetze, G., Atrops, H., Demiriz, M.A., Liebermann, E., et al.: Molecular interactions in mixtures of carboxylic acids with amines. 2. Volumetric, conductimetric, and NMR properties. J. Phys. Chem. 85, 2524–2529 (1981). doi:10.1021/j150617a022
Kondo, H.: Magnetic thin film media. Japanese Patent 2581090, 1987
Kondo, H., Seto, J., Ozawa, K., Haga, S.: Novel lubricant for magnetic thin film media. J. Magn. Soc. Jpn. 13(Suppl S1), 213–218 (1989)
Kondo, H., Seki, A., Watanabe, H., Seto, J.: Frictional properties of novel lubricants for magnetic thin film media. IEEE Trans. Magn. 26, 2691–2693 (1990). doi:10.1109/20.104840
Kondo, H., Seki, A., Kita, A.: Comparison of an amide and amine salt as friction modifiers for a magnetic thin film medium. Tribol. Trans. 37, 99–105 (1994). doi:10.1080/10402009408983271
Kondo, H., Hisamichi, Y., Kamei, T.: Lubrication of modified perfluoropolyether on magnetic media. J. Magn. Magn. Mater. 155, 332–334 (1996). doi:10.1016/0304-8853(95)00700-8
Kondo, H., Kaneda, Y.: Development of modified perfluoropolyether tape. International tribology conference–AUSTRIB ‘94 Perth, Australia, 5–8 Dec 1994, pp. 415–420 (1994)
Seki, A., Kondo, H.: FTIR reflection absorption spectra of novel lubricant layers on magnetic thin film media. J. Magn. Soc. Jpn 15(Suppl S2), 745–750 (1991)
Chiba, K., Sato, K., Ebine, Y., Sasaki, T.: Metal evaporated tape for high band 8 mm video system. IEEE Trans. Consum. Electron. 35, 421–425 (1989). doi:10.1109/30.44299
Sato, S., Arisaka, Y., Matsumura, S.: Surface design of aramid film for future ME tapes. IEEE Trans. Magn. 35, 2760–2762 (1999). doi:10.1109/20.800977
Kondo, H., Aoki, M., Seto, J.: Tribochemical reactions on the surfaces of thin-film magnetic media. Tribol. Trans. 36(2), 193–200 (1993). doi:10.1080/10402009308983148
Linder, R.E., Mee, P.B.: ESCA determination of fluorocarbon lubricant film thickness on magnetic disk media. IEEE Trans. Magn. 18, 1073–1076 (1982). doi:10.1109/TMAG.1982.1062144
Toney, M.F., Mate, C.M., Pocker, D.: Calibrating ESCA and ellipsometry measurements of perfluoropolyether lubricant thickness. IEEE Trans. Magn. 34, 1774–1776 (1998). doi:10.1109/20.706702
Kondo, H., Nishida, Y.: Quantitative analysis of surface functional groups on the amorphous carbon in magnetic media with XPS preceded by chemical derivatization. Bull. Chem. Soc. Jpn. 80, 1405–1412 (2007). doi:10.1246/bcsj.80.1405
Kawana, T., Takeda, T., Uchimi, T., Sato, K.: Archival stability of metal evaporated tape. J. Magn. Magn. Mater. 155, 273–275 (1996). doi:10.1016/0304-8853(95)00729-6
Kondo, H., Aoki, M., Seto, J.: Tribochemical reactions on the surface of thin film magnetic media. Tribol. Trans. 36, 193–200 (1993). doi:10.1080/10402009308983148
Beltzer, M., Jahanmir, S.: Role of dispersion interactions between hydrocarbon chains in boundary lubrication. ASLE Trans. 30, 47–54 (1986)
Kondo, H.: Effect of double bonds on friction in the boundary lubrication of magnetic thin film media. Wear 202, 149–155 (1997). doi:10.1016/S0043-1648(96)07265-1
Cong, P., Igari, T., Mori, S.: Effects of film characteristics on frictional properties of carboxylic acid monolayers. Tribol. Lett. 9, 175–179 (2000). doi:10.1023/A:1018860905694
Overney, R.M., Meyer, E., Frommer, J., Gruntherodt, H.-J., Fujihira, M., Takano, H., et al.: Force microscopy study of friction and elastic compliance of phase-separated organic thin films. Langmuir 10, 1281–1286 (1994). doi:10.1021/la00016a049
Marchionni, G., Ajroldi, G., Righetti, M.C., Pezzin, G.: Molecular interactions in perfluorinated and hydrogenated compounds. Macromolecules 26, 1751–1757 (1993). doi:10.1021/ma00059a039
Moulder, J.F., Hammond, J.S., Smith, K.L.: Using angle resolved ESCA to characterize Winchester disks. Appl. Surf. Sci. 25, 446–454 (1986). doi:10.1016/0169-4332(86)90087-5
Kimachi, K., Yoshimura, F., Hoshino, M., Terada, A.: Uniformity quantification of lubricant layer on magnetic recording media. IEEE Trans. Magn. 23, 2392–2394 (1987). doi:10.1109/TMAG.1987.1065342
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Kondo, H. Protic Ionic Liquids with Ammonium Salts as Lubricants for Magnetic Thin Film Media. Tribol Lett 31, 211–218 (2008). https://doi.org/10.1007/s11249-008-9355-9
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DOI: https://doi.org/10.1007/s11249-008-9355-9