Characterization and Diffusion Kinetics of borided Ni–Mg Alloys

In this study, a mixture of 93% Ni–7% Mg and 97% Ni–3% Mg powders were produced by the TM method and the diffusion kinetics, surface properties of borided nickel–magnesium alloy at different temperatures and times were investigated. The samples were sintered at 530°C. The boriding process was perfor...

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Bibliographic Details
Published in:Protection of metals and physical chemistry of surfaces 2020-09, Vol.56 (5), p.1015-1022
Main Authors: Ismail Yildiz, Çelik, A. Gürhan, Gunes, Ibrahim
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Corrosion and Coatings
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials
Materials Science
Metallic Materials
New Substances
Tribology
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Summary:In this study, a mixture of 93% Ni–7% Mg and 97% Ni–3% Mg powders were produced by the TM method and the diffusion kinetics, surface properties of borided nickel–magnesium alloy at different temperatures and times were investigated. The samples were sintered at 530°C. The boriding process was performed Ekabor II boron powder in atmospheric furnace environment at 900, 950 and 1000°C temperatures for 1.5, 3.0 and 4.5 h. The phases in the boride layer were found by means of Cu K α radiation in XRD. XRD analysis of NiB, Ni 2 B and Ni 3 B phases were obtained. The hardness of borides layer formed on surface after boriding of the 93% Ni–7% Mg and 97% Ni–3% Mg alloys substrate ranged from 1518 to 1964 HV 0.05 , whereas value of the unborided nickel was 112–136 HV 0.05 . The boron activation energy was estimated as equal to 136.506 and 158.843 kJ/mol for the borided 93% Ni–7% Mg and 97% Ni–3% Mg alloys, respectively.
ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205120050287