Laser texturing for lowhyphen;flyinghyphen;height media

摘要

A novel selectivehyphen;area texturing process using a pulsed laser to produce a new form of texture in only the landing zone is discussed. By rotating the media under the focused pulsedhyphen;laser beam, a row of crater shaped dimples are created in the landing zone only. The rest of the disk remains smooth and untextured. Contact starthyphen;stop (CSS) test results from a lubricated C/CoCrTa/Cr media on the laserhyphen;textured substrate exhibited a constant static friction coefficient of 0.17 even after 12hyphen;K CSS cycles, with no apparent friction buildup. This unique behavior is attributed to the rounded and smooth surface topography of the laserhyphen;textured media.