Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer
Abstract
The influence of a thin 80Ni-20Cr (at.%) protective coating on the cyclic oxidation of a Ti-24Al-11 Nb (at.%) alloy based on Ti3Al at 600 and 900 degrees C in air was investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction analysis (XRD). The results of the oxidation tests showed that deposited Ni-Cr layer provides an improved oxidation resistance due to the formation of protective oxide scale which barriers the outward Ti diffusion into the scale. In some extent surface formation of the nitride layer also prevents diffusion of alloying elements from the matrix. Although oxidation at 900 degrees C is faster than that at 600 degrees C, a remarkable reduction in mass gain of the alloy with protective coating was observed. The thickness of oxide scale on the coated samples is approximately two times less than that formed on the uncoated samples treated under the same exposure conditions (120 h). (c) 2008 Elsevier Ltd. All rights re...served.
Keywords:
Ti3Al-based intermetallics / sputtered coating / XRD / cyclic oxidation / oxide scale fractureSource:
Corrosion Science, 2008, 50, 7, 1919-1925Funding / projects:
- Ministry of Science of the Republic of Serbia [144027]
DOI: 10.1016/j.corsci.2008.04.006
ISSN: 0010-938X
WoS: 000258543600014
Scopus: 2-s2.0-47149110656
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Institution/Community
VinčaTY - JOUR AU - Cvijović, Ivana AU - Jovanović, Milan T. AU - Peruško, Davor PY - 2008 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3506 AB - The influence of a thin 80Ni-20Cr (at.%) protective coating on the cyclic oxidation of a Ti-24Al-11 Nb (at.%) alloy based on Ti3Al at 600 and 900 degrees C in air was investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction analysis (XRD). The results of the oxidation tests showed that deposited Ni-Cr layer provides an improved oxidation resistance due to the formation of protective oxide scale which barriers the outward Ti diffusion into the scale. In some extent surface formation of the nitride layer also prevents diffusion of alloying elements from the matrix. Although oxidation at 900 degrees C is faster than that at 600 degrees C, a remarkable reduction in mass gain of the alloy with protective coating was observed. The thickness of oxide scale on the coated samples is approximately two times less than that formed on the uncoated samples treated under the same exposure conditions (120 h). (c) 2008 Elsevier Ltd. All rights reserved. T2 - Corrosion Science T1 - Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer VL - 50 IS - 7 SP - 1919 EP - 1925 DO - 10.1016/j.corsci.2008.04.006 ER -
@article{ author = "Cvijović, Ivana and Jovanović, Milan T. and Peruško, Davor", year = "2008", abstract = "The influence of a thin 80Ni-20Cr (at.%) protective coating on the cyclic oxidation of a Ti-24Al-11 Nb (at.%) alloy based on Ti3Al at 600 and 900 degrees C in air was investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction analysis (XRD). The results of the oxidation tests showed that deposited Ni-Cr layer provides an improved oxidation resistance due to the formation of protective oxide scale which barriers the outward Ti diffusion into the scale. In some extent surface formation of the nitride layer also prevents diffusion of alloying elements from the matrix. Although oxidation at 900 degrees C is faster than that at 600 degrees C, a remarkable reduction in mass gain of the alloy with protective coating was observed. The thickness of oxide scale on the coated samples is approximately two times less than that formed on the uncoated samples treated under the same exposure conditions (120 h). (c) 2008 Elsevier Ltd. All rights reserved.", journal = "Corrosion Science", title = "Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer", volume = "50", number = "7", pages = "1919-1925", doi = "10.1016/j.corsci.2008.04.006" }
Cvijović, I., Jovanović, M. T.,& Peruško, D.. (2008). Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer. in Corrosion Science, 50(7), 1919-1925. https://doi.org/10.1016/j.corsci.2008.04.006
Cvijović I, Jovanović MT, Peruško D. Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer. in Corrosion Science. 2008;50(7):1919-1925. doi:10.1016/j.corsci.2008.04.006 .
Cvijović, Ivana, Jovanović, Milan T., Peruško, Davor, "Cyclic oxidation behaviour of Ti3Al-based alloy with Ni-Cr protective layer" in Corrosion Science, 50, no. 7 (2008):1919-1925, https://doi.org/10.1016/j.corsci.2008.04.006 . .