抄録
To achieve ultra-high recording density, flying heights of less than one micro-inch are required which lead to a tribology of the HDI (head-disk interface) limiting disk drive design. Various amorphous diamond-like or DLC type carbon films have been developed for wear protection. At first pure carbon(C) sputtered films were used, followed by C:H (hydrogenated carbon) and C:N (nitrided carbon) films with generally superior wear performance. Because of the near- or quasi-contact nature of the wear process, we have used mainly (CDT)CONTINUOUS DRAG TESTING for our evaluations, along with identifying bond character, nanohardness, microscopies of surfaces and bulk of films etc., to establish the nature of initial wear damage and dependence on as-deposited film structure (atomic & electronic). The purpose: Control deposition processes-to control the structure-thus control properties.
