Effect of contact forms on the wear of hard silicon surfaces by soft polymers

Friction

Zhongde Shan¹  Xiaohong Jia²  Fei Guo²  Yuming Wang²  Zhaoxiang Zhang³ 

[1] State Key Laboratory of Advanced Forming Technology & Equipment, China Academy of Machinery Science & Technology, 100044, Beijing, China;State Key Laboratory of Tribology, Tsinghua University, 100084, Beijing, China;Joint Research Center for Rubber and Plastic Seals, Tsinghua University, 100084, Beijing, China;State Key Laboratory of Tribology, Tsinghua University, 100084, Beijing, China;Joint Research Center for Rubber and Plastic Seals, Tsinghua University, 100084, Beijing, China;State Key Laboratory of Advanced Forming Technology & Equipment, China Academy of Machinery Science & Technology, 100044, Beijing, China;

关键词: polymers;    silicon surface;    wear;    combined stress;   

DOI  :  10.1007/s40544-020-0375-2

来源: Springer

【 摘 要 】

The mechanism of hard surfaces worn by soft polymers is not clearly understood. In this paper, a new hypothesis has been proposed, it holds that the stress acting on the hard surface under certain working conditions is the main reason for wear of the hard surface by a soft polymer. The hypothesis was investigated by changing the contact form between tribo-pairs. For this, friction tests between six polymer spheres and smooth, rough, and inclined monocrystalline silicon surfaces were carried out. The results show that for the same tribo-pair, the silicon surface will not be worn in some contact forms, but in other contact forms it will be worn. We believe the wear of hard surface by a soft polymer is the result of the combined stress state action on the hard surface.

【 授权许可】

CC BY