Claims
- 1. A magnetic storage medium comprising a magnetic layer on a substrate, a carbon layer directly on at least a portion of the magnetic layer and a lubricant layer directly on at least a portion of a surface of the carbon layer, wherein the lubricant layer consists of a solid crosslinked fluoropolymer layer having a thickness less than 40 angstroms, wherein the carbon layer has a thickness of less than 50 angstroms, and wherein the crosslinked fluoropolymer layer has a water contact angle of greater than 100 degrees.
- 2. The storage medium of claim 1 wherein the crosslinked fluoropolymer layer is a crosslinked perfluoropolyether.
- 3. The storage medium of claim 1 wherein the crosslinked fluoropolymer layer has a thickness less than about 30 angstroms.
- 4. The storage medium of claim 1 wherein the magnetic layer comprises a cobalt alloy.
- 5. The storage medium of claim 1 wherein the magnetic storage medium is in the form of a disc.
- 6. The storage medium of claim 1 wherein the substrate comprises aluminum, aluminum alloy, glass, or a polymer.
- 7. The storage medium of claim 1 wherein the carbon layer comprises amorphous carbon.
- 8. The storage medium of claim 1, wherein the crosslinked fluoropolymer layer covers the carbon layer approximately uniformly.
- 9. The storage medium of claim 1 wherein the crosslinked fluoropolymer layer covers only a portion of the carbon layer.
- 10. A disc drive system comprising the storage medium of claim 1.
- 11. A magnetic storage medium comprising:a magnetic layer on a substrate; a carbon layer having a thickness of less than 50 angstroms directly on the magnetic layer; and a lubricant layer having a thickness of less than 40 angstroms directly on the carbon layer, wherein the lubricant layer has a water contact angle of greater than about 100 degrees and consists of a solid crosslinked fluoropolymer.
- 12. The magnetic storage medium of claim 11 wherein the lubricant layer has a water contact angle of greater than about 110 degrees.
- 13. The magnetic storage medium of claim 11 wherein the lubricant layer consists of a crosslinked perfluoropolymer.
CROSS REFERENCE TO RELATED APPLICATION
This application claims priority under U.S. Provisional Application Serial No. 60/088,329 filed on Jun. 4, 1998, entitled “CROSS LINKED FLUOROCARBON BARRIER COATING FOR THIN CARBON FILMS,” incorporated herein by reference, and under U.S. Provisional Application Serial No. 60/088,130 filed on Jun. 4, 1998, entitled “METHOD OF PRODUCING A ZONED SOLID LUBRICATED LAYER/BARRIER COATING,” incorporated herein by reference.
US Referenced Citations (61)
Non-Patent Literature Citations (3)
Entry |
“Enhanced Tribological Performance of Rigid Disk by Using Chemically Bonded Lubricant” by, H.J. Lee et al., J. Vac., Sci. Technol. A 11(3), May/Jun. 1993, pp. 711-714. |
“The Mechanism of Ultraviolet Bonding of Perfluoropolyether Lubricants” by, Vurens et al., IEEE Transactions on Magnetics, vol. 29, No. 1, Jan. 1993, pp. 282-285. |
“Tribological Characteristics of Liquid Lubricant on Magnetic Disks Treated by Far-UV Radiation” by, Tian et al., Journal of Tribology, vol. 115, Jul. 1993, pp. 400-405. |
Provisional Applications (2)
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Number |
Date |
Country |
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60/088329 |
Jun 1998 |
US |
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60/088130 |
Jun 1998 |
US |