Electrochemical Stability of Cu–10Al–10Zn, Cu–10Al–10Ni, and Cu–10Ni–10Zn Ternary Alloys in Simulated Physiological Solutions

Nady, H.; El-Rabiei, M.M.

doi:10.1007/s40735-016-0058-8

Cited by 4 publications

(10 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tested specimens showed similar polarization and passivity characteristics under all conditions. However, the corrosion current densities (Icorr) and corrosion potentials (Ecorr) of the as-cast and aged alloys shift indicates corrosion protection [43]. It is observed in Table 1 that the corrosion current densities were more intense for the as-cast Cu-10Ni alloy.…”

Section: Corrosion Behaviour and Grain Size Effect Potentiodynamic Po...mentioning

confidence: 95%

“…The grain data distribution was well-fitted by a log-normal function of the statistical scale presented as a solid line. A log-normal function depicts that grain structure is mainly poised of small grains completed by larger grains [41] [43].…”

Section: Grain Size Evolutionmentioning

confidence: 99%

“…Polarization resistance is a response to corrosion resistance. The corrosion process is accelerated by residual stress, solute atoms, and lattice distortion [4] [41] [43]. The matrix of the aged sample contains fewer solute atoms, lower residual stress, and smaller lattice distortion than the as-cast sample.…”

Section: Corrosion Behaviour and Grain Size Effect Potentiodynamic Po...mentioning

confidence: 99%

See 2 more Smart Citations

GRAIN SIZE EVOLUTION, MECHANICAL AND CORROSION BEHAVIOUR OF PRECIPITATE STRENGTHENED Cu-Ni ALLOY

Nwaeju¹,

Eboh²,

Edoziuno

2022

Acta Metall Slovaca

View full text Add to dashboard Cite

Grain size characteristics, mechanical properties, and corrosion resistance of Cu-10%Ni alloy heat treated at three different temperatures and times were investigated and compared with the synthesized alloy. Mechanical properties such as UTS, ductility, hardness, and impact strength were determined. An optical metallurgical microscope was used to examine the structural properties. ImageJ software was also used to measure the grain size distribution of the alloys. The corrosion behaviour of the produced Cu-10%Ni alloys is analyzed by potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS). After corrosion testing, the surface morphology of the exposed samples is analyzed by scanning electron microscope (SEM) equipped with energy dispersive spectroscopy. The corrosion rate of precipitate strengthened Cu-10%Ni alloy decreases and ultimate tensile strength, ductility, and hardness increase as the average grain size distribution decreases. The non-heat treated Cu-10%Ni alloy showed a peak value of corrosion rate and average grain size, but a lower value of mechanical properties. An increase in residual stress follows an increase in grain size distribution, which lowers the strength and increases corrosion rates due to more active sites. The research outcome has enabled the improvement of the mechanical and corrosion properties of Cu-10%Ni alloys as a component for marine and automobile applications.

show abstract

Section: Corrosion Behaviour and Grain Size Effect Potentiodynamic Po...mentioning

confidence: 95%

Section: Grain Size Evolutionmentioning

confidence: 99%

Section: Corrosion Behaviour and Grain Size Effect Potentiodynamic Po...mentioning

confidence: 99%

See 1 more Smart Citation

GRAIN SIZE EVOLUTION, MECHANICAL AND CORROSION BEHAVIOUR OF PRECIPITATE STRENGTHENED Cu-Ni ALLOY

Nwaeju¹,

Eboh²,

Edoziuno

2022

Acta Metall Slovaca

View full text Add to dashboard Cite

show abstract

“…In alkaline Na 2 SO 4 solutions, the corrosion resistance of the Cu-Ni alloys increases with the increase of the nickel content. A critical SO 4 -ions concentration was reported, below which the stability decreases and protective film breakdown takes place [9,[13][14][15]. In this paper, focus has been made on the role of Ni content on the corrosion resistance of the Cu-10Al-xNi ternary alloys with constant Al ratio of 10% in neutral Na 2 SO 4 solutions, aiming at the categorization of these alloys according to their stability in this simulated marine solution and to recommend the use of the alloys in such medium, especially for the industrial production of Na 2 SO 4 .…”

Section: Introductionmentioning

confidence: 99%

“…There is a wide range of materials which exhibit the shape memory effect, but only those alloys are commercially attractive which show a substantial amount of strain recovery and generate significant force due to shape change [4]. The electrochemical corrosion of Cu-Ni alloys has been extensively examined under different experimental conditions using various techniques [5][6][7][8][9]. It was found that the Egyptian Journal of Chemistry http://ejchem.journals.ekb.eg/ ________________________________________________ Egypt.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni content on the corrosion performance of Cu-10Al-Ni ternary alloys in neutral sulfate solutions

et al. 2022

View full text Add to dashboard Cite

The present work focuses on the effect of Ni content (0, 5, 10, and 30 %) on the corrosion behavior of Cu-10Al-xNi ternary alloys in Na 2 SO 4 solutions. The electrochemical properties were investigated in Na 2 SO 4 solutions by polarization measurements, cyclic voltammetry and electrochemical impedance spectroscopy, EIS, techniques. Surface examination and morphological studies were employed. The results show that the addition of Ni to Cu-Al alloys increases the corrosion resistance. Also, the increase in the Ni content improves the corrosion resistance of the Cu-Al-Ni ternary alloys due to formation of a stable passive film. The mechanism of the corrosion process and the barrier film formation was discussed. The experimental EIS data were fitted to the theoretical data according to the suggested model. The incorporation of Ni in the cuprous oxide (Cu 2 O) barrier film leads to its stabilization. An equivalent circuit model for the electrode/electrolyte interface under different conditions was proposed. For industrial applications, the results lead to the recommendation of the Cu-10Al-30Ni alloy for applications in the production of Na 2 SO 4 .

show abstract

In vitro biomedical corrosion and enzyme activity inhibition on modified Cu-Zn-Al bioalloy

et al. 2023

View full text Add to dashboard Cite

The amperometric biosensor was created using a flat sheet of the Cu-Zn-Al shape memory alloy, with a shiny surface and uniform thickness below 1 mm. The high biocompatibility and a large specific surface area for enzyme loading are evaluated. In vitro biomedical corrosion testing of samples revealed successful immobilization of catalase, which has undergone quasi-reversible electron transfer from the surface and saline solution. A catalase that had been immobilized retained its basic structure and bioactivity and demonstrated a remarkable electrocatalytic response to hydrogen peroxide reduction. The reduction of hydrogen peroxide on the catalase-modified Cu-25.38Zn-3.3Al alloy was investigated using hydrodynamic amperometry in both the absence and presence of l-cysteine and K2[B3O3F4OH] inhibitors. Catalytic reduction currents have increased as a result of the gradual increase in hydrogen peroxide concentration. The study on enzyme activity inhibition has shown a lower corrosion rate of catalase-modified bioalloy than the initial sample because inhibitor ions occupy all sites of the immobilized enzyme.

show abstract

Electrochemical Stability of Cu–10Al–10Zn, Cu–10Al–10Ni, and Cu–10Ni–10Zn Ternary Alloys in Simulated Physiological Solutions

Cited by 4 publications

References 46 publications

GRAIN SIZE EVOLUTION, MECHANICAL AND CORROSION BEHAVIOUR OF PRECIPITATE STRENGTHENED Cu-Ni ALLOY

GRAIN SIZE EVOLUTION, MECHANICAL AND CORROSION BEHAVIOUR OF PRECIPITATE STRENGTHENED Cu-Ni ALLOY

Effect of Ni content on the corrosion performance of Cu-10Al-Ni ternary alloys in neutral sulfate solutions

In vitro biomedical corrosion and enzyme activity inhibition on modified Cu-Zn-Al bioalloy

Contact Info

Product

Resources

About