Low Molecular Weight Z-Tetraol Boundary Lubricant Films in Hard Disk Drives. (3rd December 2012)

• Record Type: Journal Article
• Authors: Waltman, R. J.; Deng, H.
• Other Names: Marchon Bruno Academic Editor.
• Is Part Of: Advances in tribology. Volume 2012(2012)
• Publication Date: 2012-12-03
• Subjects: Tribology -- Periodicals; 621.8905
• DOI: 10.1155/2012/964089
• Languages: English
• ISSNs: 1687-5915

Abstract

Abstract : Lower molecular weight Z-Tetraol films exhibit increased mechanical spacing in the slider-disk interface due to a lower z-profile. An increased resistance to lubricant disturbance on the disk surface (e.g., lube moguls) with decreasing film thickness is attributed to an increasing contribution from the polar component of the disjoining pressure. Evaporative loss at temperatures typically encountered in a hard-disk drive also increases with decreasing molecular weight but is strongly dependent on the initial bonded fraction.