Electrolytic production and characterization of nickel–rhenium alloy coatings

Author:

Niedbała Jolanta1,Popczyk Magdalena2,Kopyto Dorota1,Swinarew Andrzej Szymon23,Matuła Izabela2

Affiliation:

1. Łukasiewicz Research Network – Institute of Non-Ferrous Metals, Hydroelectrometallurgy Center , Sowińskiego 5 , 44-100 Gliwice , Poland

2. Faculty of Science and Technology, University of Silesia in Katowice , 75 Pułku Piechoty 1A , 41-500 Chorzów , Poland

3. Institute of Sport Science, The Jerzy Kukuczka Academy of Physical Education , Mikołowska 72A , 40-065 Katowice , Poland

Abstract

Abstract Electrolytic Ni–Re alloy coatings were obtained in galvanostatic conditions from nickel–rhenium baths with different contents of ammonium rhenate(vii) (0.5, 1.25, 2.5 and 5 g·L−1). 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.

Publisher

Walter de Gruyter GmbH

Subject

Condensed Matter Physics,General Materials Science

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