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Título: | Insights into the role of the layer architecture of Cr¿Ti¿N based coatings in long-term high temperature oxidation experiments in steam atmosphere |
Autor: | Mato, S.; Sánchez-López, J.C. CSIC ORCID ; Barriga, J.; Pérez, J. F.; Alcalá, G. | Palabras clave: | Coatings’ design Steam oxidation Diffusion kinetics Thermal analysis X-ray diffraction Nanoindentation |
Fecha de publicación: | 2021 | Editor: | Pergamon Press | Citación: | Ceramics International 47: 4257- 4266 (2021) | Resumen: | Knowledge on hard coatings has been applied in the energy field extending their use as protecting coatings of steam power generation plants components. The role of the layer architecture of Cr-Ti-N based coatings deposited by reactive cathodic arc evaporation on P92 steel substrates was studied with the focus on their oxidation resistance at 650 oC in 100% steam atmosphere up to 2000 h. Characterization of the coatings was performed by gravimetry, scanning electron microscopy, electron probe microanalysis, glow discharge optical emission spectroscopy, X-ray diffraction, thermodynamic simulations using the CALPHAD method, Rockwell C indentation and nanoindentation. The layered arrangement improves the oxidation resistance of TiN under the working conditions of steam power plants, as well as the mechanical properties of CrN. The produced architectures performance under the described working conditions boosts the understanding of the processes taking place at high temperature, making possible the design of optimal coatings combine the best behavior of both nitrides for each specific application, reaching a corrosion protection at high temperature in water vapor comparable to that of CrN and a hardness and Young’s modulus as high as those of TiN. | Versión del editor: | http://dx.doi.org/10.1016/j.ceramint.2020.10.003 | URI: | http://hdl.handle.net/10261/251395 | DOI: | 10.1016/j.ceramint.2020.10.003 | Identificadores: | doi: 10.1016/j.ceramint.2020.10.003 issn: 0272-8842 |
Aparece en las colecciones: | (ICMS) Artículos |
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2021 Cr-Ti-N Ceram Int.pdf | 901,25 kB | Adobe PDF | Visualizar/Abrir |
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