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To improve the resolution of the image in this case study, the highest level is selected by clicking the sequence "Graphic settings" → "Interpolation level" → "High" (slides 10 and 11).
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And low friction coefficient and low wear rate could be achieved at high sliding velocity.
API 5L X80 steel exhibited dominant adhesive wear at low sliding speed and oxidative wear at high sliding speed.
Friction coefficient decreases with increasing temperature at high sliding velocities (from 0.79 to 1.96 m/s) due to surface lubrication.
The hybridisation of the two reinforcements also improved the wear resistance of the composites, especially under high sliding speeds.
To clarify the dry friction and wear characteristics of several kinds of cast irons under the conditions of high sliding speed and high contact pressure was intended here.
The wear process became temperature dependence at high sliding speeds (>Tg), i.e. the volume loss decreased with increasing sliding speed.
Furthermore, the friction coefficient decreased further when subjected to deionized water lubrication and high sliding speed because of the secondary lubricating effect.
The mode of lubricant failure known as scuffing provides a significant design constraint in high sliding gears, cams and metal cutting and forming processes.
Under the current test conditions it is shown that the material with long woven reinforcement exhibits the lowest wear rate and lowest friction at high sliding speeds.
In this work, the tribological properties of PBI were examined with a steel ball-PBI disc contact at 280 °C under high load and high sliding speed conditions.
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