TY - JOUR
T1 - Properties and characterization of multilayers of carbides and diamond-like carbon
AU - Strondl, C.
AU - Kolk, G.J. van der
AU - Hurkmans, T.
AU - Fleischer, W.
AU - Trinh, T.
AU - Marcolino Carvalho, Nuno
AU - Hosson, J.Th.M. de
N1 - Relation: http://www.rug.nl/natuurkunde/
date_submitted:2006
Rights: University of Groningen. Materials Science Centre
PY - 2001/7
Y1 - 2001/7
N2 - Metal containing diamond-like carbon (Me-DLC) coatings are widely applied in industrial applications. Normally, the coatings are produced with small inclusions of carbide forming elements like the 3d, 4d or 5d metals, or Si or B. The small carbide islands have sizes of approximately 2-20 nm. The effect of the nano inclusions is a reduction of internal compressive stress, a lowering of Young’s modulus, a lower hardness, and a higher coefficient of friction as compared to pure diamond-like carbon (DLC). The contents of metallic elements are typically between 10 and 20 at.%; for B containing diamond-like carbon a higher percentage is observed (up to 50% B). In this work the effect of replacing the nano inclusions by a stack of extremely thin carbide layers, separated by carbon layers, is tested. Properties like adhesion, hardness, E-modulus, fatigue resistance, coefficient of friction and wear resistance were studied. Furthermore, detailed high resolution TEM was performed to observe the effects of layer integrity. The results show a clear difference in wear and fatigue behavior when the multilayer structure was altered. Short periods within the multilayer structure of W-C:H promotes the wear resistance, while long periods promote the fatigue resistance.
AB - Metal containing diamond-like carbon (Me-DLC) coatings are widely applied in industrial applications. Normally, the coatings are produced with small inclusions of carbide forming elements like the 3d, 4d or 5d metals, or Si or B. The small carbide islands have sizes of approximately 2-20 nm. The effect of the nano inclusions is a reduction of internal compressive stress, a lowering of Young’s modulus, a lower hardness, and a higher coefficient of friction as compared to pure diamond-like carbon (DLC). The contents of metallic elements are typically between 10 and 20 at.%; for B containing diamond-like carbon a higher percentage is observed (up to 50% B). In this work the effect of replacing the nano inclusions by a stack of extremely thin carbide layers, separated by carbon layers, is tested. Properties like adhesion, hardness, E-modulus, fatigue resistance, coefficient of friction and wear resistance were studied. Furthermore, detailed high resolution TEM was performed to observe the effects of layer integrity. The results show a clear difference in wear and fatigue behavior when the multilayer structure was altered. Short periods within the multilayer structure of W-C:H promotes the wear resistance, while long periods promote the fatigue resistance.
KW - W-C : H coatings
KW - PVD
KW - mechanical properties
KW - tribological properties
KW - LAYERS
U2 - 10.1016/S0257-8972(01)01179-3
DO - 10.1016/S0257-8972(01)01179-3
M3 - Article
VL - 142-144
SP - 707
EP - 713
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
T2 - 7th International Conference on Plasma Surface Engineering (PSE 2000)
Y2 - 17 September 2000 through 21 September 2000
ER -