摘要
The bundle structure formed perpendicular to the scratching direction is a type of wear-induced structure for thermoplastics.In this study,the formation mechanism of bundle structures on polycarbonate(PC)surfaces is investigated by reciprocal scratching experiments.Based on the analysis of the morphologies,friction forces,and height signals,the formation of the bundle structure is reproduced.The influence of scratching parameters,including the feed value and scratching direction,on the formation of the bundle structure is also studied.It is found that the bundle structure is accumulated by the continuous stacking of the sample materials plowed by the tip in stick–slip motion,and that the stick–slip behavior is enhanced with increased scratching times.This work reproduces the formation process of bundle structure in experiments for the first time and demonstrates that the stick–slip enhancement mechanism exists in the reciprocal scratching process,providing further insight into the friction behavior of polymers.
出处
《Friction》
SCIE
EI
CAS
CSCD
2023年第10期1815-1828,共14页
摩擦(英文版)
基金
The authors gratefully acknowledge the financial supports of the Natural Science Foundation of Heilongjiang Province of China(YQ2020E015)
Science and Technology Based for Equipment Design and Manufacturing for Introduction Talents of Discipline to Universities 2.0 of the 111 Project(BP0719002)
Self-planned Task of State Key Laboratory of Robotics and Systems,Harbin Institute of Technology(SKLRS202001C)
Young Elite Scientist Sponsorship Program by China Association for Science and Technology(YESS20200155)
the Fundamental Research Funds for the Central Universities(FRFCU5710050521 and FRFCU5710091220).