Atomic Force Microscopy of Magnetic Rigid Disks and Sliders and Its Applications to Tribology

Autor:	G. S. Blackman, Bharat Bhushan
Rok vydání:	1991
Předmět:	Surface (mathematics) Materials science business.industry Atomic force microscopy Mechanical Engineering Surfaces and Interfaces Surface finish Tribology Surfaces Coatings and Films Stress (mechanics) Optics Mechanics of Materials Slider Surface roughness Deformation (engineering) business
Zdroj:	Journal of Tribology. 113:452-457
ISSN:	1528-8897 0742-4787
DOI:	10.1115/1.2920645
Popis:	Surface topography measurements of magnetic rigid disks and a slider are made using an atomic force microscope (AFM) and a conventional noncontact optical profiler (NOP). The lateral resolution for the surface topographs spans the range of 1 μm down to 2 nm. Topography measurements are used to predict summit statistics and the real area of contact statistics. We find that contact statistics predictions are a strong function of the lateral resolution of the roughness measurement tool. As the magnetic slider comes into contact with the disk surface, the nanoasperities (detected by AFM) plastically deform instantly and subsequently the load is supported by the elastic deformation of microasperities (detected by NOP). AFM also allows the measurements of lubricant-thickness distributions on smooth surfaces. Examples for magnetic disks are presented.
Databáze:	OpenAIRE
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