Growth Kinetics and Some Mechanical Properties of Plasma Paste Borided Layers Produced on Nimonic 80A-Alloy
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Institute of Materials Science and Engineering, Poznan University of Technology, Pl. M.Sklodowskiej-Curie 5, 60-965 Poznan, Poland
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Laboratoire de Technologie des Matériaux, Faculté de Génie Mécanique et Génie des Procédés, Université des Sciences et de la Technologie Houari Boumediene, BP 32 Bab Ezzouar, Algiers 16111, Algeria
*
Author to whom correspondence should be addressed.
Materials 2021, 14(18), 5146; https://doi.org/10.3390/ma14185146
Received: 17 August 2021
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Revised: 4 September 2021
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Accepted: 6 September 2021
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Published: 8 September 2021
(This article belongs to the Section Metals and Alloys)
Plasma paste boriding was employed in order to produce the boride layers on Nimonic 80A-alloy. The process was carried out at temperatures of 1023 K, 1073 K and 1123 K for 3, 4 and 6 h in a gas mixture of 50% H2-50% Ar. Borax paste was used as a boron source. The microstructure of the produced surface layers consisted of the mixture of nickel borides and chromium borides. The effect of processing temperature and duration on the thickness of the borided layers was observed. The theoretical thicknesses of the borided layers were estimated using an integral diffusion model. A good correlation was obtained between the theoretical (modeled) and experimental depths of the plasma paste borided layers. The boride layers were characterized by a high hardness ranging from 1160 HV to 2132 HV. The multiphase character of the produced layers resulted in differences in hardness. A significant improvement of the wear resistance of the plasma paste borided Nimonic 80A-alloy was observed in comparison with the non-borided alloy.
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Keywords:
plasma paste boriding; hardness; wear resistance; cohesion
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MDPI and ACS Style
Makuch, N.; Dziarski, P.; Kulka, M.; Keddam, M. Growth Kinetics and Some Mechanical Properties of Plasma Paste Borided Layers Produced on Nimonic 80A-Alloy. Materials 2021, 14, 5146. https://doi.org/10.3390/ma14185146
AMA Style
Makuch N, Dziarski P, Kulka M, Keddam M. Growth Kinetics and Some Mechanical Properties of Plasma Paste Borided Layers Produced on Nimonic 80A-Alloy. Materials. 2021; 14(18):5146. https://doi.org/10.3390/ma14185146
Chicago/Turabian StyleMakuch, Natalia, Piotr Dziarski, Michał Kulka, and Mourad Keddam. 2021. "Growth Kinetics and Some Mechanical Properties of Plasma Paste Borided Layers Produced on Nimonic 80A-Alloy" Materials 14, no. 18: 5146. https://doi.org/10.3390/ma14185146
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