System for testing magnetic head/disk interfaces

Details System for testing magnetic head/disk interfaces System for testing magnetic head/disk interfaces

1986-04-28

1988-02-09

Eisenzopf, Reinhard J.

Electricity: measuring and testing

A material property using electrostatic phenomenon

Frictionally induced

360102, G01N 2760

Patent

active

047243929

ABSTRACT:
Method for measuring the properties of a slider/disk interface in a magnetic disk storage apparatus by measuring a triboelectric current flowing between disk and slider. Rotational speed is adjusted between 100 and 500 rpm so as to obtain a frictional contact between disk and slider. The shape of the tribo current curve obtained during the measuring time interval is analyzed. An early maximum of the tribo current amplitude and a subsequent continual decay indicates a good slider/disk interface and a long lifetime.

REFERENCES:
patent: 3601694 (1971-08-01), Checketts et al.
patent: 3855625 (1974-12-01), Garnier et al.
patent: 4479090 (1984-10-01), Frater et al.

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