The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1993
Filed:
Jun. 28, 1991
William G Haines, Colorado Springs, CO (US);
Chongwon Byun, Colorado Springs, CO (US);
Earl Johns, Colorado Springs, CO (US);
Quock Ng, Colorado Springs, CO (US);
Durga Ravipati, Phoenix, AZ (US);
Robert M Raymond, Colorado Springs, CO (US);
Gary C Rauch, Colorado Springs, CO (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A hard protective material and method for forming the medium having the formula C.sub.x N.sub.y. The medium may be formed as a protective film on a magnetic recording disk in a sputtering apparatus such as a magnetron apparatus. The amount of nitrogen in the film may be affected by controlling the collisions of the sputtered material between the target and deposition substrate by controlling the bombardment of the substrate by electrons. The films exhibit properties indicative of a textured morphology on a nanoscale which enhances the retention of lubricant overcoats.