2002
DOI: 10.1016/s0040-6090(02)00944-6
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Fracture mechanisms in nanoscale layered hard thin films

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Cited by 95 publications
(44 citation statements)
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“…From (9), (12) and (14), we can make the following general conclusion. Therefore, in a system with one non-linear process (see equation (9)), one term can be negative.…”
Section: Theoretical Investigationmentioning
confidence: 74%
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“…From (9), (12) and (14), we can make the following general conclusion. Therefore, in a system with one non-linear process (see equation (9)), one term can be negative.…”
Section: Theoretical Investigationmentioning
confidence: 74%
“…This eventually results in tool failure at the cutting edge. Based on the impact fatigue fracture resistance and low cycling scratch wear test data (Table 1), we can conclude that in the nano-multilayered coatings, the cracks can be deflected by the internal interfaces of the nano-layers, which results in energy dissipation without coating failure [12,13]. To study characteristics of the tribofilms, X-ray Photoelectron Spectroscopy (XPS) analysis of the worn tool surface was made (Table 2).…”
Section: Resultsmentioning
confidence: 99%
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“…FEM simulations of von-Mises stress distributions [7] reveal highest stressed regions below the indenter center at the coating-substrate interface, but also outside the contact, due to bending of the layer with maximum tensile stress at the coating surface. This is graphically shown in Figure 5c,d: The schematics in Figure 5d describes the loaded region in the cross-section, while the effect of elastoplastic flow of material below the indent outside the contact area, resulting in circular and radial cracks of the bulged region, is schematically shown in Figure 5c [29,30]: Ring cracks around the indent spread from the coating surface at the periphery of the contact and spread towards the substrate surface.…”
Section: Deformation Mechanisms Of the Coatingsmentioning
confidence: 99%
“…Thin films of materials combining hardness and wear resistance with high compliance as well as high toughness are future candidates for the tribological protection of functionally-used polymers [6][7][8]: Single layer hard coatings like chromium nitride (CrN) on CFC substrates, presented by Kä ä riä inen et al [9], do not fulfill the high demands for tribological protection: The problems, stated by the authors, were both the very inhomogeneous and highly rough CFC surface and the need for bridging high to low elasticity from polymer to hard coating. Deposition of dense, continuous coatings with high adhesion to the CFC substrate was impossible.…”
Section: Introductionmentioning
confidence: 99%