Process for Improving the Lubricant Retention of Magnetic Storage Disk
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18
The magnetic head in magnetic disk storages moves along the storage disk before lifting off at 500 to 1000 rpm. To ensure that the service life of magnetic disks is not unnecessarily reduced, the wear during that period must be reduced to a minimum. For this purpose, the disks are lubricated by means of a fluorinated hydrocarbon. Too much lubricant makes the head stick to the disk in the inoperative state, whereas too little lubricant causes excessive wear. For lubricant retention, i.e., for maintaining a lubricating film for a long time, the disk surfaces must have a certain degree of porosity. Therefore, the disk surfaces, covered with a continuous magnetic film, are bombarded with high-energy heavy ions (such as Xe+) and subsequently etched.