A Wear-resistant Coating
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
A hard, wear-resistant thin carbon film is formed by RF or DC sputtering of a carbon target in the presence of methane (CH4) or a mixture of argon (Ar) and CH4 . The hydrogenated carbon film has application as a corrosion-resistant and wear-resistant overcoat for thin film metal alloy or metal oxide magnetic recording disks. The carbon film is formed directly on the magnetic layer of the thin film disks or on an intermediate adhesion layer. Thin films of tungsten, chromium, alloys of chromium and tungsten, molybdenum, vanadium or niobium, and intermetallic compounds of cobalt and tungsten, molybdenum, vanadium or niobium, are adequate adhesion layers between the magnetic layer and the carbon film.