Molecular dynamics analysis of friction damage on nano-twin 6 H-SiC surface

被引：4

作者：

Yu, Dongling ^{[1
,2
]}

Zhang, Huiling ^{[1
]}

Li, Bin ^{[1
]}

Zheng, Qi ^{[1
]}

Fang, Changfu ^{[1
]}

Wu, Nanxing ^{[1
,2
]}

机构：

[1] Jingdezhen Ceram Univ, Sch Mech & Elect Engn, Jingdezhen 333403, Jiangxi, Peoples R China

[2] Lab Ceram Mat Proc Technol Engn, Jingdezhen 333403, Jiangxi Provinc, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 180卷

基金：

中国国家自然科学基金;

关键词：

6H-SiC; Nano-twin; Friction; Dislocation; Deformation damage; FRACTURE; SIMULATION; BEHAVIOR; CARBIDE;

D O I：

10.1016/j.triboint.2023.108223

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In order to investigate the deformation and damage of nano-twin 6 H-SiC after friction, a three-dimensional model was established. It is found that the barrier formed by layered faults can block the propagation of stress and hinder the formation and expansion of dislocation. The strength of the twins shows Hall-Petch phe-nomenon, and the strength is the highest when the thickness is 10.3 nm. The twin boundary is the initial point of deformation damage, and the greater the thickness of the twin, the greater the damage. The "Point-Line-Plane" destruction in twin crystals has a great influence on the processing of crystal materials.

引用

页数：8

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