Abstract
Micro cone-shaped projections formed on the NiP surface by laser technique are described as a new texture of rigid disks. In order to achieve the lower glide height (G/H), the projection height must be lower. Therefore, it is required that the projection spacing is short and the top shape of projection has large curvature as that real contact area between a slider and a projection does not increase. Optimized texture pattern guaranteed 1.2 uin. G/H showed excellent CSS performances. The good tribological durability is attributed to the precise controllability of the real contact area according to the projection density, considering the wear of carbon layer.
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