Modeling residual stresses generated in Ti coatings thermally sprayed on Al2O3 substrates

• Autorzy: Zimmerman J. , Lindemann Z. , Golański D. , Chmielewski T. , Włosiński W.
• Języki publikacji: EN

Abstrakty

EN

There is described a method of modeling by the finite element method the residual stresses induced during thermal deposition of coatings. The simulation was performed in two stages. The first dynamic stage simulated the impacts of the individual particles of the coating material onto the substrate, and the next static stage included a non-linear thermo-mechanical analysis intended for simulating the process of layer-by-layer deposition of the coating, with a specified thickness, and then cooling the entire system to the ambient temperature. In the computations, the samples were assumed to be cylindrical in shape and composed of an Al2O3 substrate and a titanium coating (with three different thicknesses) deposited using the detonation method. The correctness of the numerical model was verified experimentally by measuring the deflections of a real Ti coating/Al2O3 substrate sample with the Ti coating detonation-sprayed on the ceramic substrate, after cooling it to the ambient temperature. The experimental results appeared to be in good agreement with those obtained by the numerical computations.

Słowa kluczowe

EN

residual stress; coatings; thermal spray

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2013
• Tom: Vol. 61, nr 2
• Strony: 515--525
• Opis fizyczny: Bibliogr. 30 poz., rys., tab., il., wykr.

Twórcy

autor

Zimmerman J.

• Institute of Mechanics and Printing, Warsaw University of Technology, 85 Narbutta St., 02-524 Warsaw, Poland

autor

Lindemann Z.

• Institute of Mechanics and Printing, Warsaw University of Technology, 85 Narbutta St., 02-524 Warsaw, Poland

autor

Golański D.

• Institute of Manufacturing Processes, Department of Welding Engineering, Warsaw University of Technology, 85 Narbutta St., 02-524 Warsaw, Poland

autor

Chmielewski T.

• Institute of Manufacturing Processes, Department of Welding Engineering, Warsaw University of Technology, 85 Narbutta St., 02-524 Warsaw, Poland

autor

Włosiński W.

• Institute of Fluid-Flow Machinery, Polish Academy of Sciences, 1 Defilad Sq., 00-901 Warszawa, Poland

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