Electrodeposition, Microstructure and Magnetic Properties of Nickel-Cobalt-Copper Alloy Powders
Samo za registrovane korisnike
2018
Autori
Spasojević, MiroslavSpasojević, Milica
Mašković, Pavle
Marković, Dušan
Ribić-Zelenović, Lenka
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Powders of Ni-Co alloys containing small amounts of Cu were produced by electrodeposition from an ammonium bath. Cathodic polarization curves were recorded and partial current densities for alloy deposition and hydrogen evolution were determined. At a current density of 100 mA cm(-2), the electrodeposition process resulted in Ni79.1Co18.6Cu2.3 powder with an average grain size of 6.8 nm, composed of an amorphous matrix and FCC nanocrystals. The deposition of Cu with Ni and Co led to a higher proportion of the amorphous phase, smaller nanocrystals and smaller powder particles in the electrodeposit than in the alloy without copper. During annealing at temperatures ranging from 25 degrees C to 160 degrees C, no structural changes occurred in the powder. Upon structural relaxation in the temperature range of 160-350 degrees C, the powders cooled at 25 degrees C showed greater magnetic permeability. At temperatures between 350 degrees C and 430 degrees C, the amorphous phase exhibiting rela...tively lower magnetization underwent crystallization, accompanied by the formation of small-sized FCC nanocrystals, which had relatively higher magnetization values, leading to an increase in the magnetic permeability of the cooled powder. At temperatures above 430 degrees C, the formation of large crystalline grains at the expense of small ones caused a decrease in magnetization. (C) 2018 The Electrochemical Society.
Izvor:
Journal of the Electrochemical Society, 2018, 165, 11Izdavač:
- Electrochemical Soc Inc, Pennington
Finansiranje / projekti:
- Usmerena sinteza, struktura i svojstva multifunkcionalnih materijala (RS-MESTD-Basic Research (BR or ON)-172057)
DOI: 10.1149/2.0441811jes
ISSN: 0013-4651
WoS: 000441505200002
Scopus: 2-s2.0-85060450034
Kolekcije
Institucija/grupa
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Spasojević, Miroslav AU - Spasojević, Milica AU - Mašković, Pavle AU - Marković, Dušan AU - Ribić-Zelenović, Lenka PY - 2018 UR - https://cherry.chem.bg.ac.rs/handle/123456789/2200 AB - Powders of Ni-Co alloys containing small amounts of Cu were produced by electrodeposition from an ammonium bath. Cathodic polarization curves were recorded and partial current densities for alloy deposition and hydrogen evolution were determined. At a current density of 100 mA cm(-2), the electrodeposition process resulted in Ni79.1Co18.6Cu2.3 powder with an average grain size of 6.8 nm, composed of an amorphous matrix and FCC nanocrystals. The deposition of Cu with Ni and Co led to a higher proportion of the amorphous phase, smaller nanocrystals and smaller powder particles in the electrodeposit than in the alloy without copper. During annealing at temperatures ranging from 25 degrees C to 160 degrees C, no structural changes occurred in the powder. Upon structural relaxation in the temperature range of 160-350 degrees C, the powders cooled at 25 degrees C showed greater magnetic permeability. At temperatures between 350 degrees C and 430 degrees C, the amorphous phase exhibiting relatively lower magnetization underwent crystallization, accompanied by the formation of small-sized FCC nanocrystals, which had relatively higher magnetization values, leading to an increase in the magnetic permeability of the cooled powder. At temperatures above 430 degrees C, the formation of large crystalline grains at the expense of small ones caused a decrease in magnetization. (C) 2018 The Electrochemical Society. PB - Electrochemical Soc Inc, Pennington T2 - Journal of the Electrochemical Society T1 - Electrodeposition, Microstructure and Magnetic Properties of Nickel-Cobalt-Copper Alloy Powders VL - 165 IS - 11 DO - 10.1149/2.0441811jes ER -
@article{ author = "Spasojević, Miroslav and Spasojević, Milica and Mašković, Pavle and Marković, Dušan and Ribić-Zelenović, Lenka", year = "2018", abstract = "Powders of Ni-Co alloys containing small amounts of Cu were produced by electrodeposition from an ammonium bath. Cathodic polarization curves were recorded and partial current densities for alloy deposition and hydrogen evolution were determined. At a current density of 100 mA cm(-2), the electrodeposition process resulted in Ni79.1Co18.6Cu2.3 powder with an average grain size of 6.8 nm, composed of an amorphous matrix and FCC nanocrystals. The deposition of Cu with Ni and Co led to a higher proportion of the amorphous phase, smaller nanocrystals and smaller powder particles in the electrodeposit than in the alloy without copper. During annealing at temperatures ranging from 25 degrees C to 160 degrees C, no structural changes occurred in the powder. Upon structural relaxation in the temperature range of 160-350 degrees C, the powders cooled at 25 degrees C showed greater magnetic permeability. At temperatures between 350 degrees C and 430 degrees C, the amorphous phase exhibiting relatively lower magnetization underwent crystallization, accompanied by the formation of small-sized FCC nanocrystals, which had relatively higher magnetization values, leading to an increase in the magnetic permeability of the cooled powder. At temperatures above 430 degrees C, the formation of large crystalline grains at the expense of small ones caused a decrease in magnetization. (C) 2018 The Electrochemical Society.", publisher = "Electrochemical Soc Inc, Pennington", journal = "Journal of the Electrochemical Society", title = "Electrodeposition, Microstructure and Magnetic Properties of Nickel-Cobalt-Copper Alloy Powders", volume = "165", number = "11", doi = "10.1149/2.0441811jes" }
Spasojević, M., Spasojević, M., Mašković, P., Marković, D.,& Ribić-Zelenović, L.. (2018). Electrodeposition, Microstructure and Magnetic Properties of Nickel-Cobalt-Copper Alloy Powders. in Journal of the Electrochemical Society Electrochemical Soc Inc, Pennington., 165(11). https://doi.org/10.1149/2.0441811jes
Spasojević M, Spasojević M, Mašković P, Marković D, Ribić-Zelenović L. Electrodeposition, Microstructure and Magnetic Properties of Nickel-Cobalt-Copper Alloy Powders. in Journal of the Electrochemical Society. 2018;165(11). doi:10.1149/2.0441811jes .
Spasojević, Miroslav, Spasojević, Milica, Mašković, Pavle, Marković, Dušan, Ribić-Zelenović, Lenka, "Electrodeposition, Microstructure and Magnetic Properties of Nickel-Cobalt-Copper Alloy Powders" in Journal of the Electrochemical Society, 165, no. 11 (2018), https://doi.org/10.1149/2.0441811jes . .