Electrolytic production and characterization of nickel–rhenium alloy coatings

Electrolytic Ni–Re alloy coatings were obtained in galvanostatic conditions from nickel–rhenium baths with different contents of ammonium rhenate( ) (0.5, 1.25, 2.5 and 5 g·L ). The surface morphology, chemical, and phase composition of the obtained materials were determined. The coatings’ corrosion...

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Published inReviews on advanced materials science Vol. 60; no. 1; pp. 784 - 793
Main Authors Niedbała, Jolanta, Popczyk, Magdalena, Kopyto, Dorota, Swinarew, Andrzej Szymon, Matuła, Izabela
Format Journal Article
LanguageEnglish
Published De Gruyter 20.10.2021
Subjects
ammonium rhenate
electrodeposition
nickel
Ni–Re alloy coatings
rhenium
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Summary:Electrolytic Ni–Re alloy coatings were obtained in galvanostatic conditions from nickel–rhenium baths with different contents of ammonium rhenate( ) (0.5, 1.25, 2.5 and 5 g·L ). The surface morphology, chemical, and phase composition of the obtained materials were determined. The coatings’ corrosion resistance tests were carried out in a 5% NaCl solution. Based on the tests, it was found that the highest corrosion resistance characterizes the coating with the highest rhenium content (37%). This material can be recommended for practical use as a protective coating. The density of the deposited Ni–37Re alloy was determined, and its specific surface area was assessed. The melting point, hardness, and electrical conductivity were also determined.
ISSN:1605-8127
1605-8127
DOI:10.1515/rams-2021-0058