Control of Wear of Magnetic Media with Sputtered i-Carbon Overcoats

该项目解决了沉积在计算机系统中使用的刚性磁盘上的表面材料的耐磨特性。通过内置在滑块中的读/写磁线圈将信息存储在盘上，滑块在旋转的盘旁边的薄空气膜上行驶。更高的信息密度需要更小的间隔距离。减小距离会增加接触和磨损的可能性。本研究评估了在镀镍钴和溅射钴铬上溅射的非晶态碳的磨损性能。研究了磨损机理，分析了磁性薄膜/涂层界面的裂纹扩展。

This project addresses the wear protective nature of a surface material deposited on a rigid magnetic disk used in computer systems. Information is stored on the disk by a read/write magnetic coil built into a slider which rides on a thin air film next to the rotating disk. Higher density of information requires smaller separation distance. Decreasing the distance increases the likelihood of contact and wear. This research assesses the wear properties of amorphous carbon which is sputtered on plated nickel-cobalt or sputtered cobalt-chrome. The mechanism of wear is studied and crack propagation at the magnetic film/overcoat interface is analyzed.