文献类型：期刊文献

英文题名：Friction between silicon and diamond at the nanoscale

作者：Bai, Lichun[1,2];Sha, Zhen-Dong[3,4];Srikanth, Narasimalu[1];Pei, Qing-Xiang[3];Wang, Xu[5];Srolovitz, David J.[6,7];Zhou, Kun[2]

机构：[1]Nanyang Technol Univ, Interdisciplinary Grad Sch, Singapore 639798, Singapore;[2]Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore;[3]Inst High Performance Comp, Singapore 138632, Singapore;[4]Xi An Jiao Tong Univ, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;[5]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[6]Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA;[7]Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA

年份：2015

卷号：48

期号：25

外文期刊名：JOURNAL OF PHYSICS D-APPLIED PHYSICS

收录：;EI(收录号：20152200897633);WOS:【SCI-EXPANDED(收录号:WOS:000355233600011)】；

基金：This work is financially supported by Ministry of Education (Academic Research Fund TIER 1-RG12814) and Agency for Science, Technology and Research (SERC Grant No: 112 290 4015), Singapore. LB acknowledges the Interdisciplinary Graduate School of Nanyang Technological University, Singapore for providing the Research Student Scholarship.

语种：英文

外文关键词：nanoscale friction; silicon; molecular dynamics simulation

摘要：This work investigates the nanoscale friction between diamond-structure silicon (Si) and diamond via molecular dynamics simulation. The interaction between the interfaces is considered as strong covalent bonds. The effects of load, sliding velocity, temperature and lattice orientation are investigated. Results show that the friction can be divided into two stages: the static friction and the kinetic friction. During the static friction stage, the load, lattice orientation and temperature dramatically affects the friction by changing the elastic limit of Si. Large elastic deformation is induced in the Si block, which eventually leads to the formation of a thin layer of amorphous Si near the Si-diamond interface and thus the beginning of the kinetic friction stage. During the kinetic friction stage, only temperature and velocity have an effect on the friction. The investigation of the microstructural evolution of Si demonstrated that the kinetic friction can be categorized into two modes (stick-slip and smooth sliding) depending on the temperature of the fracture region.