Microtribology of alumite disc using anodic oxidation

Abstract

Magnetic alumite disks were fabricated using an anodic oxidation method. An additional chemical texture process was effective in improving tribological properties. The recording characteristics of 10-, 20-, and 30-nm-textured disks were evaluated. A recording density of 50 kb/in was attained at 5 MHz and 5 m/s relative speed. Environmental tests were carried out, with excellent results.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>