Determination of mechanical properties of graded coatings using nanoindentation

Chudoba, T.; Schwarzer, Norbert; Linss, V.; Richter, Frank

doi:10.1016/j.tsf.2004.08.157

Cited by 35 publications

(18 citation statements)

References 15 publications

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“…A variety of techniques have been employed to measure the elastic constants of thin films, for example, tensile test [7][8][9], substrate curvature technique [10][11][12][13], bulge test [14][15][16][17], microbeam bending or deflection technique [18,19], nanoindentation (NIP) [20][21][22][23][24][25][26][27], resonant ultrasound spectroscopy [28][29][30], surface guided wave technique [31][32][33], X-ray diffraction (XRD) technique [34,35], combination of 2 sin ψ X-ray diffraction and laser curvature methods [36,37], combination of acoustic microscopy and nanoindentation method [38,39]. Among the above-mentioned methods, it is available in a few cases that the methods are able to simultaneously determine the Poisson's ratio and Young's modulus of elasticity for functional thin films and thin film structures, but usually either Poisson's ratio or modulus of elasticity should be assumed a priori for determining the other one.…”

Section: Introductionmentioning

confidence: 99%

A practical method for simultaneous determination of Poisson’s ratio and Young’s modulus of elasticity of thin films

et al. 2011

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In this paper, based on the exact analytical solution of axisymmetric deformation of the circular membrane fixed at its edge under the action of uniformly-distributed loads, we propose a new method to be able to simultaneously determine Poisson's ratio and Young's modulus of elasticity for thin films. We also present a set of exact formulas used for simultaneously determining Poisson's ratio and Young's modulus of elasticity for free-standing thin films or coating thin films without residual stresses or pre-tension. This method has the advantages of simplicity and reliability, and it doesn't involve the substrate effect.

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Section: Introductionmentioning

confidence: 99%

A practical method for simultaneous determination of Poisson’s ratio and Young’s modulus of elasticity of thin films

et al. 2011

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“…Nanoindentation tests are performed to accurately measure the materials properties of the substrate and coatings, taking into account possible property profiles [38,39].…”

Section: The Procedures and Resultsmentioning

confidence: 99%

About the Identification of Generic Tribological Parameters, Sophisticated Completely Analytical Contact Modelling and the Effective Indenter Concept Applied to a Comprehensive 3d Incremental Wear and Fretting Model for Layered Surfaces

Schwarzer¹

2014

Proceedings of the 3rd South-East European Conference on Computational Mechanics (SEECCM III)

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“…Darum dürfen die Versuche nur mit sehr geringen Lasten, im Mittel 50 mN, gefahren werden, so dass der Einfluss des Substrates gegen Null geht, auch wenn er nie ganz Null sein wird. Die eindeutige Trennung erfordert aber Simulationen der experimentellen Tests mittels FEM [5].…”

Section: Modellierung Von Beanspruchung Und Schädigungsmechanismenunclassified

Model generation of the damage behavior of coated forming tools

Neugebauer

Hochmuth

Schmidt³

et al. 2010

Materialwissenschaft Werkst

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Schlüsselwörter: Umformwerkzeuge / hochfestes Aluminium / Beschichtung / Simulation / FEM / With the ambition for improved efficiency of energy and resources the light weight construction in engineering and vehicle construction and therefore also the usage of light but high strength aluminum alloys gains importance. Components made from new composite materials and combinations of materials offer the ability of considerable decrease in size and weight compared with conventional materials. But in the forming machining of such materials the mechanical and thermal demand on the tools is much higher. Especially the higher affinity towards adhesion and the abrasive impact of embedded reinforcement particles is critical. Simultaneously the usage of lubricants and release agents shall be reduced due to antipollution reasons. Therefore an improved wear resistance of the tool surfaces by coatings or modification of the surface layer is necessary. Generally it is not enough just to coat the existing tools but tool geometry, coating-substratematching and coating thickness has to be adjusted to the loading. For that purpose the method of finite elements (FEM) is a good choice. In the subproject B1 of the SFB 692 numerical models for analyzing and optimizing of coated tools for high strength aluminum alloys are to be developed. A main part of this work is the determination of model parameters. Even here the FEM in combination with experimental analysis is used. The article describes the approach via selected examples of DLC coatings. Preliminary studies pointed out the suitability of DLC coatings despite the high carbon affinity of the aluminum.

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Determination of mechanical properties of graded coatings using nanoindentation

Cited by 35 publications

References 15 publications

A practical method for simultaneous determination of Poisson’s ratio and Young’s modulus of elasticity of thin films

A practical method for simultaneous determination of Poisson’s ratio and Young’s modulus of elasticity of thin films

About the Identification of Generic Tribological Parameters, Sophisticated Completely Analytical Contact Modelling and the Effective Indenter Concept Applied to a Comprehensive 3d Incremental Wear and Fretting Model for Layered Surfaces

Model generation of the damage behavior of coated forming tools

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