Electron microscopy; proceedings of the Electron microscopy; proceedings of the Stockholm Conference, September, 1956 electronmicrosco00euro Year: 1957 Fig. 3. Effect of Lubricant on the Initiation of Wear Damage. The build up of a surface film when using extreme pressure additives in the lubricant which seem to form a contaminated surface film in the area of contact. This film may be expected to be of low shear strength and may prevent metallic contact and seizure. The material of the cylinder is again case-hardened steel. Magnification 15,000. Fig. 4. Initial Stages of Fretting
Electron microscopy; proceedings of the Electron microscopy; proceedings of the Stockholm Conference, September, 1956 electronmicrosco00euro Year: 1957 Fig. 3. Effect of Lubricant on the Initiation of Wear Damage. The build up of a surface film when using extreme pressure additives in the lubricant which seem to form a contaminated surface film in the area of contact. This film may be expected to be of low shear strength and may prevent metallic contact and seizure. The material of the cylinder is again case-hardened steel. Magnification 15,000. Fig. 4. Initial Stages of Fretting Corrosion. The surface of a highly polished tool steel specimen after 15 seconds fretting (750 oscillations under a load of 10 kg and amplitude of slip 10-3 inches). Overstressing of the surface has mani- fested itself by plastic deformation and displacement of surface material; the mechanism being similar to that observed during the initial stages of wear of hard steel cylinders. Magnification 7000.
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