Characterization of Cohesion, Adhesion and Creep-Properties of Dynamically Loaded Coatings through the Impact Tester
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K.-D. Bouzakis
Abstract
The coating impact test, in combination with finite elements method (FEM) simulation, is successfully used to characterize the fatigue performance of coatings. Critical values for stress components, responsible for distinctive fatigue failure modes of the coating, are obtained and the fatigue limits of various coatings are illustrated in form of generally applicable Smith and Woehler diagrams, determined through a developed evaluation software. This software takes into account the impact test experimental data, as well as coating and substrate constitutive laws. Herewith coating adhesive and cohesive failure modes are elucidated and a cutting performance prediction of coated tools can be carried out. On the other hand, creep phenomena of plasma sprayed coatings are quantitavely interpreted.
Abstract
Der Schlagversuch und seine Simulation mit der Finiten-Elemente-Methode (FEM) werden erfolgreich zur Prüfung derWechselfestigkeit von Oberflächenschichten eingesetzt. Dabei werden kritische Werte der Spannungskomponenten, welche zu Ermüdungserscheinungen der verschiedenen Schichten führen, bestimmt und mit Hilfe von entwickelten Auswertungsalgorithmen in Form von allgemein verwendbaren Smith- und Wöhler-Diagrammen dargestellt. Bei den entsprechenden Berechnungen werden sowohl die experimentellen Daten des Schlagversuchs, als auch die Spannungs- und Verformungseigenschaften der Schichten und Substrate berücksichtigt. Mit Hilfe der entwickelten experimentellen und analytischen Vorgehensweise können adhäsive und kohäsive Versagensmechanismen der Schichten erklärt und die zu erwartende Zerspanleistung von beschichteten Werkzeugen beurteilt werden. Darüber hinaus lassen sich Kriechvorgänge von gespritzten Plasmaschichten quantitativ interpretieren.
References
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© 2001 Carl Hanser Verlag, München
Artikel in diesem Heft
- Frontmatter
- Editorial
- Dieter Neuschütz 65 Years
- Aufsätze/Articles
- Combinatorial Methods for Advanced Materials Research & Development
- Chemische Gasphasenabscheidung von SiC und SiC + Si auf Kohlenstoffsubstraten und ihre chemische Oberflächenmodifizierung
- Fabrication and Characterization of Hydrogen Absorption LaNi5 Alloy Films Sputtered on Nickel Substrate
- On the Importance of Gas Phase Chemistry in Two CVD Systems: Deposition of Silicon and Diamond
- Thermodynamic Prediction of Metastable Coating Structures in PVD Processes
- Setting Kinetic Controls for Complex Equilibrium Calculations
- Modeling of the Thermochemical Properties of Multicomponent Oxide Melts
- Subsolidus Phase Relationships of the β–Sialon Solid Solution in the Oxygen-Rich Part of the Nd–Si–Al–O–N System
- Investigation of Microstructure and Chemical Stability in Composites of NiAl Reinforced by Alumina-Silica Fibers
- Gesicherte Interpretationen der FTIR-Reflexionsspektren von SiC–CVD-Schichten durch Spektrensimulation
- Characterization of Cohesion, Adhesion and Creep-Properties of Dynamically Loaded Coatings through the Impact Tester
- Peculiarities of Diffusion Controlled Phase Formation in the Al–Co System
- Mitteilungen/Notifications
- Personen
- Bücher/Books
- Tagungen
Artikel in diesem Heft
- Frontmatter
- Editorial
- Dieter Neuschütz 65 Years
- Aufsätze/Articles
- Combinatorial Methods for Advanced Materials Research & Development
- Chemische Gasphasenabscheidung von SiC und SiC + Si auf Kohlenstoffsubstraten und ihre chemische Oberflächenmodifizierung
- Fabrication and Characterization of Hydrogen Absorption LaNi5 Alloy Films Sputtered on Nickel Substrate
- On the Importance of Gas Phase Chemistry in Two CVD Systems: Deposition of Silicon and Diamond
- Thermodynamic Prediction of Metastable Coating Structures in PVD Processes
- Setting Kinetic Controls for Complex Equilibrium Calculations
- Modeling of the Thermochemical Properties of Multicomponent Oxide Melts
- Subsolidus Phase Relationships of the β–Sialon Solid Solution in the Oxygen-Rich Part of the Nd–Si–Al–O–N System
- Investigation of Microstructure and Chemical Stability in Composites of NiAl Reinforced by Alumina-Silica Fibers
- Gesicherte Interpretationen der FTIR-Reflexionsspektren von SiC–CVD-Schichten durch Spektrensimulation
- Characterization of Cohesion, Adhesion and Creep-Properties of Dynamically Loaded Coatings through the Impact Tester
- Peculiarities of Diffusion Controlled Phase Formation in the Al–Co System
- Mitteilungen/Notifications
- Personen
- Bücher/Books
- Tagungen
