Title :
Development of hard carbon coatings for thin-film tape heads
Author :
Bhushan, Bharat ; Gupta, B.K. ; Sundaram, Ramesh ; Dey, Subrata ; Anders, Simone ; Anders, Andre ; Brown, Ian G. ; Reader, Paul D.
Author_Institution :
Dept. of Mech. Eng., Ohio State Univ., Columbus, OH, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
Major problems in thin-film recording heads are pole tip/gap recession in the inductive head and scratching/smearing, electrical short, electrostatic charge build up, and corrosion of the MR stripe in the MR heads. Wear of head structure can be minimized by depositing a hard carbon coating over the entire ABS including the head structure. In this study, we have deposited carbon coatings on Ni-Zn ferrite and Al 2O3-TiC substrates and dummy heads by various deposition techniques and characterized for mechanical and tribological properties. Ion beam carbon coatings on Ni-Zn ferrite and cathodic arc carbon coatings on Al2O3-TiC heads exhibit most wear resistance compared to other coatings in a tape drive test
Keywords :
carbon; coatings; magnetic heads; magnetic recording; magnetic tape equipment; magnetic thin film devices; wear resistant coatings; ABS; Al2O3-TiC; Al2O3-TiC substrate; C; Ni-Zn ferrite substrate; NiZnFe2O4; cathodic arc coatings; corrosion; electrical short; electrostatic charge; hard carbon coatings; inductive head; ion beam coatings; magnetoresistive head; mechanical properties; pole tip/gap recession; scratching; smearing; tape drive; thin-film recording heads; tribological properties; wear resistance; Coatings; Corrosion; Electrostatics; Ferrites; Ion beams; Magnetic heads; Mechanical factors; Substrates; Testing; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
