Electrochemical Measurement of the Surface Alloying Kinetics of Underpotentially Deposited Ag on Au(111)

Langmuir ◽  
2009 ◽  
Vol 25 (16) ◽  
pp. 9596-9604 ◽  
Author(s):  
Joshua D. Snyder ◽  
Jonah D. Erlebacher
Keyword(s):  
Electrochemical Measurement ◽  
Surface Alloying ◽  
Alloying Kinetics ◽  
Kinetics Of ◽  
Underpotentially Deposited

scholarly journals De-alloying kinetics of an Au-based amorphous alloys

2012 ◽  
Vol 536 ◽  
pp. S60-S64 ◽  
Author(s):  
Federico Scaglione ◽  
Paola Rizzi ◽  
Livio Battezzati
Keyword(s):  
Amorphous Alloys ◽  
Alloying Kinetics ◽  
Kinetics Of

scholarly journals Optical in situ study of de-alloying kinetics in nanoporous gold sponges

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 85773-85778 ◽  
Author(s):  
M. C. Tai ◽  
A. Gentle ◽  
M. D. Arnold ◽  
M. B. Cortie
Keyword(s):  
Nanoporous Gold ◽  
Dissolution Process ◽  
In Situ Study ◽  
Alloying Kinetics ◽  
Kinetics Of

Nanoporous gold sponges are useful for a variety of applications but the kinetics of the dissolution process used to make them is not well understood.

Oxidation Behavior of TiAl-Based Alloy Modified by Double-Glow Plasma Surface Alloying with Cr–Mo

2017 ◽  
Vol 36 (7) ◽  
pp. 669-675 ◽  
Author(s):  
Xiangfei Wei ◽  
Pingze Zhang ◽  
Qiong Wang ◽  
Dongbo Wei ◽  
Xiaohu Chen
Keyword(s):  
Oxide Scale ◽  
Energy Dispersive Spectrometer ◽  
Isothermal Oxidation ◽  
Alloyed Layer ◽  
Surface Alloying ◽  
Plasma Surface ◽  
Glow Plasma ◽  
Kinetics Of ◽  
Plasma Surface Alloying Technique ◽  
Plasma Surface Alloying

AbstractA Cr–Mo alloyed layer was prepared on a TiAl-based alloy using plasma surface alloying technique. The isothermal oxidation kinetics of the untreated and treated samples was examined at 850 °C. The microstructure and phase composition of the alloyed layer were analyzed by scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and X-ray powder diffraction (XRD). The morphology and constituent of the oxide scales were also analyzed. The results indicated that the oxidation resistance of TiAl was improved significantly after the alloying treatment. The oxide scale eventually became a mixture of Al2O3, Cr2O3 and TiO2. The oxide scale was dense and integrated throughout the oxidation process. The improvement was mainly owing to the enhancing of scale adhesion and the preferential oxidation of aluminum brought by the alloying effect for TiAl-based alloy.

On the kinetics of surface alloying by grain boundary migration

1997 ◽  
Vol 36 (6) ◽  
pp. 639-644
Author(s):  
L. Klinger ◽  
Y. Bréchet ◽  
G. Purdy
Keyword(s):  
Grain Boundary ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Surface Alloying ◽  
Kinetics Of

scholarly journals A Detrimental Effect of Acetonitrile on the Kinetics of Underpotentially Deposited Hydrogen and Hydrogen Evolution Reaction, Examined on Pt Electrode in H2SO4 and NaOH Solutions

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 625 ◽  
Author(s):  
Tomasz Mikolajczyk ◽  
Mateusz Luba ◽  
Boguslaw Pierozynski ◽  
Lech Smoczynski
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Charge Transfer Resistance ◽  
Pt Electrode ◽  
Transfer Resistance ◽  
Electrode Surfaces ◽  
Tafel Polarization ◽  
Alkaline Electrolytes ◽  
Kinetics Of ◽  
Underpotentially Deposited

The present paper reports AC impedance spectroscopic/Tafel polarization and cyclic voltammetry study on the influence of acetonitrile concentration on the kinetics of UPD of H (underpotential deposition of hydrogen) and HER (hydrogen evolution reaction), examined on polycrystalline and polyoriented single-crystal sphere Pt electrode surfaces in 0.5 M H2SO4 and 0.1 M NaOH supporting solutions. The resulted data provided confirmation of the destructive role of Pt surface-electrosorbed acetonitrile on the kinetics of underpotentially deposited hydrogen, as well as cathodic hydrogen evolution reaction. The above was exclusively elucidated through evaluation of the associated charge-transfer resistance and capacitance (and complementary exchange current-density and Tafel slope) parameters, derived comparatively on Pt for pure and acetonitrile-modified acidic and alkaline electrolytes.

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