Study of Surface Modification of Niobium Caused by Nitriding and Cathodic Cage Deposition

In this work, plasma nitriding (PN) and cathode cage plasma deposition (CCPN) treatments were carried out with temperatures of 400 and 450 °C to evaluate the modifications caused on the surface of pure niobium samples. XRD, SEM, Vickers microhardness, and sphere-disk analyses were used to characteri...

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Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2023-01, Vol.26, p.1
Main Authors: Macedo, Francisco R. C., Monção, Renan M., Queiroz, José C. A., Libório, Maxwell S., Costa, José A. P., Rossino, Luciana S., Danelon, Miguel R., Feitor, Michelle C., Costa, Thércio H. C., Sousa, Rômulo R. M.
Format: Article
Language:English
Subjects:
Cages
Diamond pyramid hardness
ENGINEERING, CHEMICAL
Ion nitriding
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
Niobium
Niobium nitride
nitriding
Plasma deposition
Protective coatings
Tribology
Wear resistance
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Summary:In this work, plasma nitriding (PN) and cathode cage plasma deposition (CCPN) treatments were carried out with temperatures of 400 and 450 °C to evaluate the modifications caused on the surface of pure niobium samples. XRD, SEM, Vickers microhardness, and sphere-disk analyses were used to characterize the coatings' composition, morphology, hardness, and wear resistance. The results showed that the treated samples increased hardness and wear resistance, with the sample submitted to CCPN at 450 °C presenting the best tribological behavior.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2022-0613