TY - JOUR
T1 - Atomic-scale simulations of material behaviors and tribology properties for FCC and BCC metal films
AU - Wu, Cheng Da
AU - Fang, Te Hua
AU - Lin, Jen Fin
N1 - Funding Information:
This work was supported by the National Science Council of Taiwan under grants NSC 100-2628-E-151-003-MY3 and NSC 100-2221-E-151-018-MY3 .
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - The material behaviors and tribology properties of face-centered cubic (FCC) and body-centered cubic (BCC) metal films under nanocontact with a scanning probe tip are studied using molecular dynamics simulations. The results clearly show that for a given indentation depth, the required indentation force increases with atomic bonding energy. During scratching, the chips (removed atoms) pile up in front of the probe tip due to adhesion. Most of the chips behind the probe tip disappear due to elastic relaxation and elastic recovery. A slip system clearly occurs in the <110> and <111> directions for FCC and BCC metal films, respectively. A material with higher atomic bonding energy exhibits a larger normal force, a larger friction force, and a lower friction coefficient.
AB - The material behaviors and tribology properties of face-centered cubic (FCC) and body-centered cubic (BCC) metal films under nanocontact with a scanning probe tip are studied using molecular dynamics simulations. The results clearly show that for a given indentation depth, the required indentation force increases with atomic bonding energy. During scratching, the chips (removed atoms) pile up in front of the probe tip due to adhesion. Most of the chips behind the probe tip disappear due to elastic relaxation and elastic recovery. A slip system clearly occurs in the <110> and <111> directions for FCC and BCC metal films, respectively. A material with higher atomic bonding energy exhibits a larger normal force, a larger friction force, and a lower friction coefficient.
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U2 - 10.1016/j.matlet.2012.04.079
DO - 10.1016/j.matlet.2012.04.079
M3 - Article
AN - SCOPUS:84861593472
SN - 0167-577X
VL - 80
SP - 59
EP - 62
JO - Materials Letters
JF - Materials Letters
ER -