scholarly journals Al-Cu alloy formation by aluminium underpotential deposition from AlCl3+NaCl melts on copper substrate

2021 ◽  
Vol 48 (03) ◽  
pp. 159-171
Author(s):  
B. S. RADOVIĆ ◽  
V. S. CVETKOVIĆ ◽  
R. A. EDWARDS ◽  
J. N. JOVIĆEVIĆ
Keyword(s):  
Copper Substrate ◽  
Underpotential Deposition ◽  
Alloy Formation ◽  
Cu Alloy

Catalytic reduction of nitrates in water on Pt promoted Cu hydrotalcite-derived catalysts: Effect of the Pt–Cu alloy formation

2011 ◽  
Vol 110 ◽  
pp. 58-70 ◽  
Author(s):  
A. Aristizábal ◽  
S. Contreras ◽  
N. Barrabés ◽  
J. Llorca ◽  
D. Tichit ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Alloy Formation ◽  
Cu Alloy

Al–Fe alloy formation by aluminium underpotential deposition from AlCl3+ NaCl melts on iron substrate

2011 ◽  
Vol 102 (1) ◽  
pp. 59-68 ◽  
Author(s):  
Branka S. Radović ◽  
Vesna S. Cvetković ◽  
Robert A. H. Edwards ◽  
Jovan N. Jovićević
Keyword(s):  
Underpotential Deposition ◽  
Alloy Formation

Al-Cd Alloy Formation by Aluminum Underpotential Deposition from AlCl3+NaCl Melts on Cadmium Substrate

2012 ◽  
Vol 44 (1) ◽  
pp. 106-114 ◽  
Author(s):  
Niko Jovićević ◽  
Vesna S. Cvetković ◽  
Željko J. Kamberović ◽  
Jovan N. Jovićević
Keyword(s):  
Underpotential Deposition ◽  
Alloy Formation

scholarly journals Aluminium/zirconium alloys obtained by Al underpotential deposition onto Zr from low temperature AlCl3+NaCl molten salts

2019 ◽  
Vol 84 (11) ◽  
pp. 1329-1344
Author(s):  
Vesna Cvetkovic ◽  
Niko Jovicevic ◽  
Natasa Vukicevic ◽  
Jovan Jovicevic
Keyword(s):  
Low Temperature ◽  
Zirconium Alloys ◽  
Linear Sweep Voltammetry ◽  
Underpotential Deposition ◽  
Alloy Formation ◽  
X Ray Diffraction ◽  
Electrode Surfaces ◽  
Chloroaluminate Melt ◽  
Thermal Preparation

Contrary to the widely accepted hypothesis that it is not possible, aluminium underpotential deposition (UPD) onto zirconium from a low temperature (200, 250 and 300?C) equimolar chloroaluminate melt was recorded. Furthermore, it was shown that aluminium UPD facilitates alloy formation between the deposited aluminium monolayer and the zirconium substrate by interdiffusion. The aluminium/zirconium alloys formed at the temperatures substantially lower than those needed for thermal preparation of the same alloys were: Al3Zr2 and Al3Zr. Experimental techniques used were linear sweep voltammetry, potential step, scanning electron microscope, energy dispersive spectroscopy and X-ray diffraction were used for characterization of obtained electrode surfaces.

scholarly journals Magnesium underpotential deposition from nitrate melts and alloy formation with platinum substrate

2016 ◽  
Vol 54 (05) ◽  
pp. 321-330 ◽  
Author(s):  
V. S. CVETKOVIĆ ◽  
J. N. JOVIĆEVIĆ ◽  
L. J. BJELICA
Keyword(s):  
Underpotential Deposition ◽  
Alloy Formation

Au-Cu Alloy Formation on Cubic Cu2O Nanocrystals at Ambient Temperature and Their Catalytic Performance

ChemNanoMat ◽  
2016 ◽  
Vol 2 (9) ◽  
pp. 861-865 ◽  
Author(s):  
Zhenhua Zhang ◽  
Tian Cao ◽  
Liangfeng Luo ◽  
Rui Song ◽  
Huijuan Wang ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Catalytic Performance ◽  
Alloy Formation ◽  
Cu Alloy

scholarly journals Alloy formation by Mg underpotential deposition on al from nitrate melts

2015 ◽  
Vol 21 (4) ◽  
pp. 527-536 ◽  
Author(s):  
Vesna Cvetkovic ◽  
Luka Bjelica ◽  
Natasa Vukicevic ◽  
Jovan Jovicevic
Keyword(s):  
Energy Dispersive Spectrometry ◽  
Electrochemical Techniques ◽  
Linear Sweep Voltammetry ◽  
Stripping Voltammetry ◽  
Underpotential Deposition ◽  
Magnesium Nitrate ◽  
Energy Dispersive ◽  
Alloy Formation ◽  
X Ray Diffraction ◽  
X Ray

Magnesium was underpotentially deposited on aluminium electrodes from magnesium nitrate-ammonium nitrate melts at temperatures ranging from 390 K to 500 K. Electrochemical techniques used were linear sweep voltammetry and potential step. Electrodes were studied by Scanning electron microscopy (SEM), Energy dispersive spectrometry (EDS), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). It was found that reduction processes of nitrate, nitrite and water (when present), in the underpotential range studied, took part simultaneously with magnesium underpotential deposition. Consequently, magnesium UPD reduction and stripping voltammetry peaks were not pronounced and well defined. Nevertheless, EDS, EDX and XRD measurements showed evidence of Mg2Al3, MgAl2 and Al12Mg17 alloys formed by underpotential deposition of magnesium onto aluminium substrate.

Spreading Dynamics of Tin, Bismuth and Some Lead-Free Solders over Copper Substrate

2005 ◽  
Vol 475-479 ◽  
pp. 3879-3882
Author(s):  
Xiaogang Shang ◽  
Christiane Mázur Lauricella ◽  
Sérgio Duarte Brandi
Keyword(s):  
Solid Surface ◽  
Liquid Metals ◽  
Copper Substrate ◽  
Sessile Droplet ◽  
Practical Applications ◽  
Spreading Velocity ◽  
Cu Alloy ◽  
Spreading Dynamics ◽  
Lead Free Solders ◽  
Physical Phenomena

The spreading of a liquid on a solid surface is very important in a number of practical applications. Many interesting physical phenomena can be observed when a small drop of a fluid spreads on a solid surface. These phenomena are related to spreading dynamics, which can be classified as spontaneous and forced wetting. In this work spreading dynamics of liquid metals and solders alloys were established to determine the mechanism of spreading. The spreading dynamics of bismuth, tin, 99.3wt%Sn-0.7wt%Cu alloy, 99.8 wt%Bi-0.2wt%Cu alloy and 60wt%Sn-40wt%Pb were studied by using sessile droplet method. Tests were carried out at a temperature range from 280oC to 350oC over a copper substrate. Results showed a discontinuous decrease of spreading velocity as a function of time. For example, spreading velocity of liquid tin at 320oC decreased from 234.86 mm/s at 0.0025 s to 4.62 mm/s at 0.0225 s, after that increased up to 9.24 mm/s at 0.025 s, then down back to 6.07 mm/s at 0.03 s, and finally reached to the end of spreading after 0.04 s.

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