Formation of powdered copper deposits by constant and pulsating overpotential electrolysis

1977 ◽  
Vol 7 (1) ◽  
pp. 77-80 ◽  
Author(s):  
K. I. Popov ◽  
D. N. Keča ◽  
M. D. Maksimović
Keyword(s):  
Copper Deposits ◽  
Powdered Copper ◽  
Pulsating Overpotential

Formation of powdered copper deposits by square-wave pulsating overpotential

1977 ◽  
Vol 7 (4) ◽  
pp. 331-337 ◽  
Author(s):  
K. I. Popov ◽  
M. D. Maksimović ◽  
M. G. Pavlović ◽  
G. R. Ostojić
Keyword(s):  
Copper Deposits ◽  
Square Wave ◽  
Powdered Copper ◽  
Pulsating Overpotential

Application of pulsating overpotential regime on the formation of copper deposits in the range of hydrogen co-deposition

2009 ◽  
Vol 14 (2) ◽  
pp. 331-338 ◽  
Author(s):  
N. D. Nikolić ◽  
G. Branković ◽  
V. M. Maksimović ◽  
M. G. Pavlović ◽  
K. I. Popov
Keyword(s):  
Copper Deposits ◽  
Pulsating Overpotential

scholarly journals Copper deposits obtained by pulsating overpotential regime with a long pause and pulse duration from sulfated solutions

2020 ◽  
Vol 85 (6) ◽  
pp. 795-807
Author(s):  
Fatemeh Shafiei ◽  
Kourosh Jafarzadeh ◽  
Ali Madram
Keyword(s):  
Current Density ◽  
Sem Analysis ◽  
Diffusion Current ◽  
Electron Microscopic ◽  
Copper Deposits ◽  
H2so4 Concentration ◽  
Scanning Electron Microscopic ◽  
Polarization Characteristics ◽  
Pulsating Overpotential ◽  
Limiting Diffusion Current

The morphologies of the copper deposits obtained by pulsating overpotential regime with prolonged pulse and pause durations from the solution of 0.15 M CuSO4 in 0.50 M H2SO4 at overpotentials lower, higher and belonging to the plateau of limiting diffusion current density were compared with those obtained by the same electrodeposition regime from solutions of 0.075 and 0.30 M CuSO4 in 0.50 M H2SO4 and 0.15 M CuSO4 in 0.25 and 1.00 M H2SO4 at overpotentials outside the plateau of limiting diffusion current density. These samples were characterized by scanning electron microscopic (SEM) analysis and the cathodic polarization characteristics from solutions compared. Increasing the Cu(II) concentration led to an increase in the limiting diffusion current density. Decreasing the H2SO4 concentration shifts both beginning and the end of the plateau of the limiting diffusion current density towards higher electrodeposition overpotentials. Also, electrodeposition in solutions of 0.15 M CuSO4 in 0.25 and 1.00 M H2SO4 led to the formation of morphological forms of copper deposits characteristic for electrodeposition of copper from higher CuSO4 or lower H2SO4 in solution at some higher overpotentials.

scholarly journals Cross-section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range

2009 ◽  
Vol 74 (6) ◽  
pp. 689-696 ◽  
Author(s):  
Nebojsa Nikolic ◽  
Vesna Maksimovic ◽  
Miomir Pavlovic ◽  
Konstantin Popov
Keyword(s):  
Structural Analysis ◽  
Internal Structure ◽  
Cross Section ◽  
Copper Deposits ◽  
Pulsating Overpotential ◽  
Insight Into ◽  
Section Analysis

Cross-section analysis of copper deposits electrodeposited in the hydrogen co-deposition range at a constant overpotential and in a pulsating overpotential (PO) regime was performed. It was shown that a complete structural analysis of these technologically very important electrodes is impossible without an analysis of their internal structure. An insight into the compactness (or porosity) of the deposits, as well as into the depth of the holes, can only be obtained by this type of analysis.

Cobalt-copper deposits in the Blackbird district, Lemhi County, Idaho

1948 ◽  
Author(s):  
J. S. Vhay
Keyword(s):  
Copper Deposits ◽  
Cobalt Copper

Fluid inclusions as a guide to porphyry copper deposits

1976 ◽  
Author(s):  
J. Thomas Nash
Keyword(s):  
Fluid Inclusions ◽  
Porphyry Copper ◽  
Porphyry Copper Deposits ◽  
Copper Deposits

Grade and Tonnage Relationships Among Copper Deposits

1975 ◽  
Author(s):  
D.A. Singer ◽  
Dennis P. Cox ◽  
Lawrence J. Drew
Keyword(s):  
Copper Deposits

TOPS AND BOTTOMS OF PORPHYRY COPPER DEPOSITS REVISITED: VERTICAL AND LATERAL EXTENTS FROM YERINGTON, NV, AND BUTTE, MT

2017 ◽  
Author(s):  
John H. Dilles ◽  
◽  
John M. Proffett ◽  
Robert A. Houston
Keyword(s):  
Porphyry Copper ◽  
Porphyry Copper Deposits ◽  
Copper Deposits
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