Friction between α-Al2O3(0001) surfaces and the effects of surface hydroxylation

被引：7
|
作者：
Wei, Dongshan [1 ]
Zhang, Yanhang [1 ,2 ]
机构：
[1] Boston Univ, Dept Mech Engn, Boston, MA 02215 USA
[2] Boston Univ, Dept Biomed Engn, Boston, MA 02215 USA
来源：
SURFACE SCIENCE | 2009年 / 603卷 / 16期
关键词：
Molecular dynamics; Friction; Alumina; Surface hydroxylation; ALPHA-ALUMINA; VELOCITY DEPENDENCE; MOLECULAR-DYNAMICS; AB-INITIO; COATINGS; MODEL; FORCES;
D O I：
10.1016/j.susc.2009.06.022
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Molecular dynamics simulations were performed to study the friction between hydroxylated alpha-Al2O3(0 0 0 1) surfaces at the temperature of 300 K. Effects of the degree of surface hydroxylation and sliding velocity have been discussed. Results indicate that the friction coefficient decreases with increased degrees of hydroxylation. For all degrees of surface hydroxylation, the friction law crosses over from thermal activation to viscous damping at sliding velocity of 80 m/s. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：L95 / L98
页数：4
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