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Materials 2017, 10(4), 448; doi:10.3390/ma10040448

Production of High-Purity Anhydrous Nickel(II) Perrhenate for Tungsten-Based Sintered Heavy Alloys

1
Institute of Non Ferrous Metals (IMN), Hydrometallurgy Department, Sowińskiego 5, 44-100 Gliwice, Poland
2
Military University of Technology in Warsaw (WAT), Kaliskiego 2, 00-908 Warszawa 49, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Jai-Sung Lee
Received: 15 February 2017 / Revised: 14 April 2017 / Accepted: 18 April 2017 / Published: 24 April 2017
(This article belongs to the Section Manufacturing Processes and Systems)
View Full-Text   |   Download PDF [8280 KB, uploaded 24 April 2017]   |  

Abstract

This paper presents a method for the production of high-purity anhydrous nickel(II) perrhenate. The method comprises sorption of nickel(II) ions from aqueous nickel(II) nitrate solutions, using strongly acidic C160 cation exchange resin, and subsequent elution of sorbed nickel(II) ions using concentrated perrhenic acid solutions. After the neutralization of the resulting rhenium-nickel solutions, hydrated nickel(II) perrhenate is then separated and then dried at 160 °C to obtain the anhydrous form. The resulting compound is reduced in an atmosphere of dissociated ammonia in order to produce a Re-Ni alloy powder. This study provides information on the selected properties of the resulting Re-Ni powder. This powder was used as a starting material for the production of 77W-20Re-3Ni heavy alloys. Microstructure examination results and selected properties of the produced sintered heavy alloys were compared to sintered alloys produced using elemental W, Re, and Ni powders. This study showed that the application of anhydrous nickel(II) perrhenate in the production of 77W-20Re-3Ni results in better properties of the sintered alloys compared to those made from elemental powders. View Full-Text
Keywords: rhenium; nickel; nickel(II) perrhenate; Re-Ni powder; tungsten-based sintered heavy alloys rhenium; nickel; nickel(II) perrhenate; Re-Ni powder; tungsten-based sintered heavy alloys
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Leszczyńska-Sejda, K.; Benke, G.; Kopyto, D.; Majewski, T.; Drzazga, M. Production of High-Purity Anhydrous Nickel(II) Perrhenate for Tungsten-Based Sintered Heavy Alloys. Materials 2017, 10, 448.

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