TY - JOUR
T1 - Influence of copper content and nanograin size on toughness of copper containing diamond-like carbon films
AU - Ning, Z. W.
AU - Yu, X.
AU - Hua, M.
AU - Wang, C. B.
PY - 2013/7
Y1 - 2013/7
N2 - Five copper containing diamond-like carbon films (Cu-DLC), each with a particular content of Cu, were deposited on Si (100) substrates in an ion beam assisted deposition system. The influence of Cu content and nanograin size on film toughness has been investigated along with verifying through the microstructural, mechanical and sliding tribological behaviours of the films. Variation of Cu content and nanocrystallites dispersing in DLC matrix induces corresponding modification in film toughness as well as hardness, intrinsic stress and sliding frictional behaviour, resulting in improvement of film toughness for the combined tribological performances. The film toughness was investigated by scratch crack propagation resistance from the critical load data obtained from scratch test. Results revealed that doping Cu with nanograin sizes, especially at a suitable content of 10·5 at-%, will significantly improve the crack initiation resistance and propagation resistance of crack during scratch test, demonstrating the improved toughness. © W. S. Maney & Son Ltd. 2013.
AB - Five copper containing diamond-like carbon films (Cu-DLC), each with a particular content of Cu, were deposited on Si (100) substrates in an ion beam assisted deposition system. The influence of Cu content and nanograin size on film toughness has been investigated along with verifying through the microstructural, mechanical and sliding tribological behaviours of the films. Variation of Cu content and nanocrystallites dispersing in DLC matrix induces corresponding modification in film toughness as well as hardness, intrinsic stress and sliding frictional behaviour, resulting in improvement of film toughness for the combined tribological performances. The film toughness was investigated by scratch crack propagation resistance from the critical load data obtained from scratch test. Results revealed that doping Cu with nanograin sizes, especially at a suitable content of 10·5 at-%, will significantly improve the crack initiation resistance and propagation resistance of crack during scratch test, demonstrating the improved toughness. © W. S. Maney & Son Ltd. 2013.
KW - Copper incorporation
KW - Diamond-like carbon film
KW - Ion beam assisted deposition
KW - Toughness
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84883503278&origin=recordpage
U2 - 10.1179/1432891713Z.000000000183
DO - 10.1179/1432891713Z.000000000183
M3 - RGC 21 - Publication in refereed journal
SN - 1432-8917
VL - 17
JO - Materials Research Innovations
JF - Materials Research Innovations
IS - SUPPL. 1
ER -