Method for forming a protective film on a slider air bearing sur

Details Method for forming a protective film on a slider air bearing sur Method for forming a protective film on a slider air bearing sur

1991-11-19

1992-09-29

Pianalto, Bernard

Coating processes

Frictional application

427131, 427132, B05D 512

Patent

active

051512947

ABSTRACT:
A method is described for depositing a thin protective carbon film on the air bearing surface of a slider in a magnetic recording disk file. A disk file with a conventional slider and a disk with an essentially carbon protective overcoat is cycled on and off at a frequency such that the slider is maintained in contact with the disk. Alternatively, the disk is rotated at a low constant speed so that the slider is maintained in contact with the disk. In both cases, carbon is transferred from the carbon overcoated disk to the air bearing surface of the slider such that during subsequent operation of the disk file, the disk file has excellent durability, especially when operated at relatively low humidity, as is required in those disk files which use a magnetoresistive sensor on the slider.

REFERENCES:
patent: 4692832 (1987-09-01), Bandara et al.
J. C. Scott, PCT Application-No. 8806334.

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