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Title: Surface treatment of magnetic recording heads

Surface modification of magnetic recording heads using plasma immersion ion implantation and deposition is disclosed. This method may be carried out using a vacuum arc deposition system with a metallic or carbon cathode. By operating a plasma gun in a long-pulse mode and biasing the substrate holder with short pulses of a high negative voltage, direct ion implantation, recoil implantation, and surface deposition are combined to modify the near-surface regions of the head or substrate in processing times which may be less than 5 min. The modified regions are atomically mixed into the substrate. This surface modification improves the surface smoothness and hardness and enhances the tribological characteristics under conditions of contact-start-stop and continuous sliding. These results are obtained while maintaining original tolerances. 15 figs.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
170483
Assignee:
International Business Machines, Inc., New York, NY (United States); Univ. of California, Oakland, CA (United States) PTO; SCA: 990200; PA: EDB-96:033693; SN: 96001517618
Patent Number(s):
US 5,476,691/A/
Application Number:
PAN: 8-306,750; CNN: Grant MSS-8996309
Contract Number:
AC03-76SF00098
Resource Relation:
Other Information: PBD: 19 Dec 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; RECORDING SYSTEMS; SURFACE TREATMENTS; MAGNETIC STORAGE DEVICES; COMPUTERS; SURFACE PROPERTIES