Evaluation of residual stresses in PVD-coatings. Part 2 |
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Authors: | O B Soroka S A Klymenko M Yu Kopeikina |
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Affiliation: | (1) ABB Corporate Research Center, Krakow, Poland |
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Abstract: | The values of residual stresses in PVD-coatings of titanium, aluminum and niobium nitrides are determined by the flexible
specimen method. An experimental-and-calculation procedure for separating the structural and thermal components of residual
stresses is proposed that allows one to determine the thermal expansion coefficients of the coating materials and a general
level of residual stresses in coatings on a substrate of any material. The dependence of the residual stress on the roughness
of the substrate surface is established. The possibility of adjusting the level of residual stresses in coatings by the discrete
surface topography formation is shown. |
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