Patent ID: 9607646
Date: 2017-03-28
CPC Classifications: G11B

Claim:
1. A hard disk lubrication layer, comprising: a first lubrication layer bonded on a carbon overcoat of the hard disk, the first lubrication layer comprising a lubricant with chemical structure: wherein Rc is a center connection structure with a connection number p, Re is a functional end group, and Rf is a fluorocarbon chain; and a second lubrication layer on the first lubrication layer, wherein the second lubrication layer is a mobile layer comprising a lubricant with chemical structure: wherein Re is a functional end group and Rf is a fluorinated chain; wherein the first lubrication and the second lubrication layer comprise different lubricants; wherein the center connection structure Rc is selected from the group consisting of (Rc1 through Rc14): wherein the fluorocarbon chain Rf of the first lubrication layer is selected from the group consisting of (Rf3 through Rf6): wherein the functional end group Re of the lubricant of the first lubrication layer is selected from the group consisting of (Re1 through Re6): wherein the functional end group Re of the lubricant of the second lubrication layer is selected from the group consisting of (Re1 through Re6):