Head contamination is a serious problem that must be avoided for high reliability. It has been previously reported that the wear debris contamination behavior of head/slider varies as the flying height of the slider is lowered. The emphasis of this paper is on identifying the trend . of wear debris contamination on the air bearing surface of a slider due to contact with the disk. The surface damage effect of the slider was accelerated by conducting sliding tests in drag conditions. It was found that for a wide range of effective slider load, the wear debris tend to accumulate near the edges of the air bearing features on the slider surface. As a means to prevent the head from being contaminated by wear debris, the use of micro-grooved surface is proposed. The effectiveness of micro-grooves on a silicon surface in trapping wear particles is demonstrated. Hence, grooves may be used strategically on the slider air bearing surface to develop contamination-free sliders.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering