应用文章
The most common materials for bearing fabrication are metals, such as low-carbon steel, stainless steel, chrome steel and high-speed steel. Polymeric materials are alternative candidates due to their self-lubrication ability, high impact durability, high corrosion resistance, low specific gravity, and high melting temperature. Polymers have therefore received widespread attention as new tribological materials for dry, aqueous and corrosive conditions. Among these polymeric materials, polytetrafluoroethylene (PTFE), polyether ether ketone (PEEK) and also their composites are often used in tribological applications.
In fans used for cooling of computers and other electronics, it has been found that one of the main contributors to failure is degradation of the miniature ball bearings, with deterioration of the lubricant as the primary failure mechanism in these applications. Due to the criticality of ball bearings, diagnosis and prognosis of these failures have been of interest to the industry.
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