Tribological properties of textured stator and PTFE-based material in travelling wave ultrasonic motors

• DOI: 10.1007/s40544-018-0253-3
• Publication Date: 2019-01-18T10:34:07Z
• Authors: Jinbang Li; Shuaishuai Zeng; Shuo Liu; Ningning Zhou; Tao Qing
• Keywords: Ultrasonic motor; Polytetrafluoroethylene; Adhesive wear; Texture (cosmology)

This study fabricated textures on the stator surface of a traveling wave ultrasonic motor (USM) using laser and investigated tribological behavior polytetrafluoroethylene (PTFE) composite friction material stator. Initially, effect with different densities was tested. As results suggested, generation large transfer films PTFE prevented by texturing, adhesive wear reduced notably despite insignificant decrease in load capacity efficiency. Next, 100-h test performed to further effects texture. Worn debris were observed discuss mechanisms. After 100 h, form changed into particles. The mechanisms sliding against textured small size fatigue slight abrasive wear. height decreased from 3.8 μm 1.1 μm. research provides method reduce materials used travelling USMs.