首页>
外国专利>
System and method for simultaneously measuring lubricant thickness and degradation, thin film thickness and wear, and surface roughness
System and method for simultaneously measuring lubricant thickness and degradation, thin film thickness and wear, and surface roughness
展开▼
机译:同时测量润滑剂厚度和降解,薄膜厚度和磨损以及表面粗糙度的系统和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A system and method for measuring lubricant thickness and degradation, carbon wear and carbon thickness, and surface roughness of thin film magnetic disks at angles that are not substantially Brewster's angle of the thin film (carbon) protective overcoat. A focused optical light whose polarization can be switched between P or S polarization is incident at an angle to the surface of the thin film magnetic disk. The range of angles can be from zero degrees from normal to near Brewster's angle and from an angle greater than Brewster's angle to 90 degrees. This range of angles allows the easy measurement of the change in lubricant thickness due to the interaction of the thin film head, the absolute lubricant thickness and degradation of the lubricant. It also allows the measurement of changes in carbon thickness and the absolute carbon thickness. The surface roughness can also be measured at any of the angles specified above.
展开▼