Autors: Mishev, V. P., Sofronov, Y. P., Yordanov, M. G., Nikolov, A. A., Petrov, K. L., Dimitrova, R. B., Angelov M., Dochev, B. A., Marchev K., Todorov, G. D.
Title: Deposition and Properties of Nanostructured Multilayer Cr/(Cr/a-C)ml Coating on Stainless Steels
Keywords: coating mechanical properties, Cr/(Cr/a-C)ml coating, functional coating, magnetron sputtering deposition, mechanical properties, nanostructured multilayer coating, nanostructured multilayer coatings,

Abstract: This work presents the results of deposition by magnetron sputtering nanostructured multilayer Cr/(Cr/a-C)ml coatings on AISI 316L and AISI 321 steel substrates. Chemical compositions were confirmed through EDX analysis with scanning electron microscopy. The coating thickness was measured with Calotester (KaloMAX II) and the total thickness of the coatings obtained ranged from 1.684 ± 0.193 μm for AISI 316L to 1.749 ± 0.123 μm for AISI 321. A Daimler-Benz Rockwell indentation test for adhesion quality and a nanoindentation test with a Berkovich indenter were carried out. According to the Raman spectroscopy analysis and in agreement with mechanical tests, it is supposed that it is the formation of a diamond-like carbon phase which enhances the mechanical properties. The hardness values obtained for the nanostructured multilayer Cr/(Cr/a-C)ml coatings were improved compared to those of the base stainless steels.

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Materials, vol. 18, 2025, Albania, https://doi.org/10.3390/ma18245654

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