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Title: Surface treatment of magnetic recording heads

Abstract

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. 22 figs.

Inventors:
; ; ; ; ;
Publication Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
OSTI Identifier:
675838
Patent Number(s):
US 5,838,522/A/
Application Number:
PAN: 8-794,672; CNN: Grant MSS-8996309
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 426000; PA: EDB-99:003042; SN: 98002027942
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 17 Nov 1998
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; ION IMPLANTATION; SURFACE COATING; TRIBOLOGY; RECORDING SYSTEMS; PLASMA; SURFACE PROPERTIES; HARDNESS

Citation Formats

Komvopoulos, K., Brown, I.G., Wei, B., Anders, S., Anders, A., and Bhatia, C.S. Surface treatment of magnetic recording heads. United States: N. p., 1998. Web.
Komvopoulos, K., Brown, I.G., Wei, B., Anders, S., Anders, A., & Bhatia, C.S. Surface treatment of magnetic recording heads. United States.
Komvopoulos, K., Brown, I.G., Wei, B., Anders, S., Anders, A., and Bhatia, C.S. Tue . "Surface treatment of magnetic recording heads". United States.
@article{osti_675838,
title = {Surface treatment of magnetic recording heads},
author = {Komvopoulos, K. and Brown, I.G. and Wei, B. and Anders, S. and Anders, A. and Bhatia, C.S.},
abstractNote = {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. 22 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {11}
}