Zn Alloy Research Articles

Comprehensive investigation of sustainable corrosion inhibitors on Cu–Zn alloy in simulated cooling water: Electrochemical explorations, SEM/EDX analysis, and DFT/molecular simulations utilizing expired Bepotastine-B as a green inhibitor

In terms of green chemistry, the use of the use of expired drugs has recently gained attention as sustainable corrosion inhibitors due to their biodegradability, environmental friendliness, low cost, and easy availability. This paper aimed to evaluate the protective action of expired Bepotastine-B on Cu–Zn alloy in simulated cooling water (SCW) using weight loss (WL), Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), surface morphology analysis and computer modeling methods, including density functional theory (DFT) and molecular dynamic simulations (MS).The variables concentration, reaction temperature, and pH of an expired drug were examined. The electrochemical results demonstrated that the expired Bepotastine-B is a mixed-type inhibitor that blocks both the anodic and cathodic potentials, which exhibited high inhibition. The corrosion rate falls as the Bepotastine increases and increases as the temperature rises. The drug's adsorption on Cu–Zn alloy follows the Langmuir isotherm model. The examination of surface morphology (SEM/EDX) indicated a formation of an insoluble complex and a fine film of inhibitor, which effectively hinders Cu–Zn alloys from deteriorating, covering the surface. These findings confirmed the formation of an adsorbed layer by the Bepotastine-B molecules hindered the dissolving of Cu–Zn alloys. The inhibitory impact of Bepotastine-B, which investigated, theoretically using DFT and the computational results align well with the results obtained from experimental inhibition efficiencies. The inhibition efficiency (IE) improved with raising Bepotastine-B concentration. The maximum IE of 94.6% has been achieved at 300 mg/L. The combination of experimental and computational approaches enhanced our understanding of the corrosion inhibition mechanism and underscored the potential of Bepotastine-B as a sustainable, and effective corrosion inhibitor for Cu–Zn alloy in this medium at dissimilar temperatures. These findings can serve as a useful guideline for future research aimed at investigating the inhibitory impact of expired drugs as a green one.

Low Temperature Hot Press Forming of a Zinc Coated Third Generation Advanced High Strength Steel

A 7 wt.% Mn steel was designed and was cast and processed to 1.5 mm sheets. The sheets were continuous annealed and coated with a Zn alloy by hot dip galvanizing before subjecting them to hot press forming cycles. The final microstructure was characterized by ultrafine ferrite grains and a high fraction of retained austenite. Excellent combinations of in-service strength-ductility-bendability were achieved for hot forming in the temperature range of 530-675 °C. The use of the low temperature hot forming minimized the liquid metal embrittlement induced cracking with Zn coating during hot forming and spot welding. Various application properties such as oxidation resistance, corrosion resistance, and springback were found at optimum levels for hot forming at 675 °C.

Evaluation of improved corrosion resistance of Zn alloy as electrode material by Co3O4 coatings

This work uses the sonochemical method to represent synthesized cobalt oxide nanoparticles (Co3O4) and analysed using different techniques. The X-ray diffraction analysis (XRD) and Fourier-transform infrared spectroscopy (FTIR) examinations of the synthesized nanoparticles confirmed their cubic structure and average crystallite size of 21.3 nm. The spherical surface shape and presence of components with a particle size of 25.3 nm were revealed. Scanning probe microscopy (SPM) methods analysed the Co3O4 coated plates' surface characteristics, including roughness and topographical ideas. An aqueous electrolyte medium (6 M KOH) was used to investigate the electrochemical corrosion behaviour of Co3O4-coated plates. According to the Tafel plot, coating Zn plates with a high surface area and mesoporous Co3O4 in KOH electrolytes greatly reduced the corrosion of the plates. The coated plates are thermally treated up to 600℃. The temperature-dependent anticorrosive properties of Co3O4 NPs are evaluated.
 KEY WORDS: Co3O4, Zn plate, Tafel plot, Linear sweep voltammetry, Anti-corrosive performance, Nanoindentation
 Bull. Chem. Soc. Ethiop. 2024, 38(1), 241-253. DOI: https://dx.doi.org/10.4314/bcse.v38i1.18

Mechanical properties, corrosion behavior, and cytotoxicity of biodegradable Zn/Mg multilayered composites prepared by accumulative roll bonding process

Zinc (Zn), magnesium (Mg), and their respective alloys have attracted great attention as biodegradable bone-implant materials due to their excellent biocompatibility and biodegradability. However, the poor mechanical strength of Zn alloys and the rapid degradation rate of Mg alloys limit their clinical application. The manufacture of Zn and Mg bimetals may be a promising way to improve their mechanical and degradation properties. Here we report on Zn/Mg multilayered composites prepared via an accumulative roll bonding (ARB) process. With an increase in the number of ARB cycles, the thicknesses of the Zn layer and the Mg layer were reduced, while a large number of heterogeneous interfaces were introduced into the Zn/Mg multilayered composites. The composite samples after 14 ARB cycles showed the highest yield strength of 411±3 MPa and highest ultimate tensile strength of 501±3 MPa among all the ARB processed samples, significantly higher than those of the Zn/Zn and Mg/Mg multilayered samples. The Zn and Mg layers remained continuous in the Zn/Mg composite samples after annealing at 150 °C for 10 min, resulting in a decrease in yield strength from 411±3 MPa to 349±3 MPa but an increase in elongation from 8±1% to 28±1%. The degradation rate of the Zn/Mg multilayered composite samples in Hanks’ solution was ranged from 127±18 µm/y to 6±1 µm/y. The Zn/Mg multilayered composites showed over 100% cell viability with their 25% and 12.5% extracts in relation to MG-63 cells after culturing for 3 d, indicating excellent cytocompatibility. Statement of significanceThis work reports a biodegradable Zn/Mg multilayered composite prepared by accumulative roll bonding (ARB) process. The yield and ultimate tensile strength of the Zn/Mg multilayered composites were improved due to grain refinement and the introduction of a large number of heterogeneous interfaces. The composite samples after 14 ARB cycles showed the highest yield strength of 411±3 MPa and highest ultimate tensile strength of 501±3 MPa among all the ARB processed samples. The degradation rate of the Zn/Mg multilayered composite meets the required degradation rate for biodegradable bone-implant materials. The results demonstrated that it is a very promising approach to improve the strength and biocompatibility of biodegradable Zn-based alloys.

Corrosion inhibition induced by captopril in Hanks’ solution on bioresorbable Mg–Zn-(Y, Nd) alloys fabricated by powder metallurgical technology

Mg–Zn alloys containing rare-earth elements (REEs) have been regarded as potential candidates for bioresorbable stent materials. As implanted in coronary arteries, stents could be exposed to angiotensin-converting enzyme (ACE) inhibitor drugs that are widely used for post-percutaneous coronary intervention patient therapy. This work investigates the inhibitory effect of an ACE inhibitor drug, namely captopril, on the corrosion behavior of Mg–Zn-(Y, Nd) alloys in Hanks' solution. Three alloy compositions, namely Mg–1Zn-2.9Y, Mg–5Zn-1Nd, and Mg–2Zn-0.2Y-0.5Nd, were prepared by a powder metallurgical (PM) method. The corrosion behavior and inhibition efficiency were studied using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), Mott-Schottky analysis, and a hydrogen evolution test. It is shown that captopril suppressed the dissolution kinetics of Mg–Zn-(Y, Nd) alloys in Hanks' solution. The captopril inhibition efficiencies (η) for the alloys are in the order of Mg–2Zn-0.2Y-0.5Nd > Mg–5Zn-1Nd > Mg–1Zn-2.9Y. A remarkable η of 48.4 % has been achieved for the Mg–2Zn-0.2Y-0.5Nd alloy. The EIS results revealed that the polarization resistance increased in the alloys after the addition of captopril to Hanks' solution. The Mott-Schottky analysis showed that the Mg–Zn-(Y, Nd) alloys behaved as an n-type semiconductor but switched to a p-type for the Mg–1Zn-2.9Y alloy in the captopril-containing Hanks’ solution. The surface analysis of the post-corrosion-tested sample has observed captopril film partially covering the α-Mg matrix, which acted as a protective layer against corrosion.

Corrosion mechanism and corrosion behavior prediction of Cu-10Ni-X alloys in NaCl solution combining DFT calculation and experiments

The corrosion resistance of Cu-Ni-based alloys depends on their Cu2O passivation film, and the effect of third element X is hardly characterized. The corrosion behavior and mechanisms of Cu-10Ni-X (Al, Fe, Mn, Cr, Sn, Ti, Zn) alloys in a 3.5% NaCl solution were systematically investigated combining DFT calculation and experiments. Both computational and experimental results revealed that except Ti, other elements could enhance the corrosion resistance of Cu2O passivation film, and the effect was ranked as Fe > Cr > Mn > Al > Sn > Zn. Based on DFT and experimental data, a corrosion behavior prediction model was established.

Dual peptide functionalization of Zn alloys to enhance endothelialization for cardiovascular applications

A new generation of fully bioresorbable metallic Zn-based alloys could be used for stenting applications; however, the initial surface degradation delays stent re-endothelialization. Thus, this work proposes a dual strategy to control the corrosion and accelerate the endothelialization of ZnMg and ZnAg biodegradable alloys. First, a stable polycaprolactone (PCL) coating is obtained and followed by its functionalization with either linear RGD (Arg-Gly-Asp) or REDV (Arg-Glu-Asp-Val) peptides or a dual peptide-based platform combining both sequences (RGD-REDV). Scratching tests showed neither delamination nor detachment of the polymeric coating. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) measurements confirmed the corrosion resistance after PCL coating by revealing lower current density and higher absolute impedance values. X-ray photoelectron spectroscopy (XPS) and fluorescent microscopy confirmed the correct peptide immobilization onto PCL coated Zn alloys. The functionalized samples exhibited enhanced human umbilical vein endothelial cells (HUVEC) adhesion. The higher number of adhered cells to the functionalized surfaces with the RGD-REDV platform demonstrates the synergistic effect of combining both RGD and REDV sequences. Higher corrosion resistance together with enhanced endothelialization indicates that the dual functionalization of Zn alloys with PCL and peptide-based RGD-REDV platform holds great potential to overcome the clinical limitations of current biodegradable metal stents.

Experimental determination and high-throughput calculation of the interdiffusion coefficient matrix and atomic mobility in Ag-rich fcc Ag–Sn–Zn alloys

In this paper, 10 groups of ternary Ag–Sn–Zn diffusion couples were prepared under 873, 973 and 1073 K within the fcc single-phase region. The element distribution across the diffusional interface was measured by EPMA, and a high-throughput determination of atomic mobilities in Ag-rich fcc Ag–Sn–Zn alloys was performed by using HitDIC (High-Throughput Determination of Interdiffusion Coefficients, https://hitdic.com/) software in the framework of the numerical inverse method. A self-consistent set of atomic mobility parameters was obtained. Reliability of the evaluated atomic mobility parameters were further verified by reasonably reproducing the experimental composition profiles. Insight into the composition- and temperature-dependence of various diffusion properties in fcc Ag–Sn–Zn alloy were subsequently retrieved and discussed. Furthermore, through the related Arrhenius information, the diffusion frequency factors and diffusion activity energies within the corresponding temperature and the composition range were obtained.

Experimental study on the effects of three alloying elements on the mechanical, corrosion and microstructural properties of aluminum alloys

Aluminum is widely used in industries such as automobile and aerospace due to its lightweight, but its pure form lacks sufficient strength and the properties of aluminum can be modified by adding alloying elements. This paper presents the effect of adding Magnesium (Mg), Copper (Cu), and Zinc (Zn) on the mechanical, microstructural, heat treatment properties, and corrosion behavior of aluminum-based alloys. The aluminum-based alloys were manufactured with varying percentages (1 %, 3 %, 5 %, 8 %, and 10 %) of the three alloying elements using sand casting. Tension, compression, Brinell hardness, and corrosion tests were conducted to examine the effect of these alloying elements on the alloys' properties. The tensile strength is improved significantly with the increase in alloying elements for all alloys but the compressive strength and hardness are improved for Al–Cu alloy only. After heat treatment, the hardness of Al–Mg alloy increased at 8 % and 10 % Mg content while the hardness of Al–Cu alloy decreased after heat treatment for all concentrations of Cu. The hardness of Al–Zn alloys remained unaffected by the heat treatment process. The corrosion rate is minimum for Al–Mg and it is maximum for Al–Cu alloys but at 10 % concentrations, the corrosion rate of Al–Mg alloy is higher than Al–Cu alloy. The microstructural observation before and after heat treatment revealed that the grain refinement occurred for Al–Mg and Al–Cu alloys but the microstructure remained unaffected for Al–Zn alloys. The outcomes of this study offer valuable insights into customizing the mechanical characteristics of aluminum-based alloys to suit particular applications.

Nerve Regeneration with a Scaffold Incorporating an Absorbable Zinc-2% Iron Alloy Filament to Improve Axonal Guidance.

Peripheral nerve damage that results in lost segments requires surgery, but currently available hollow scaffolds have limitations that could be overcome by adding internal guidance support. A novel solution is to use filaments of absorbable metals to supply physical support and guidance for nerve regeneration that then safely disappear from the body. Previously, we showed that thin filaments of magnesium metal (Mg) would support nerve regeneration. Here, we tested another absorbable metal, zinc (Zn), using a proprietary zinc alloy with 2% iron (Zn-2%Fe) that was designed to overcome the limitations of both Mg and pure Zn metal. Non-critical-sized gaps in adult rat sciatic nerves were repaired with silicone conduits plus single filaments of Zn-2%Fe, Mg, or no metal, with autografts as controls. After seventeen weeks, all groups showed equal recovery of function and axonal density at the distal end of the conduit. The Zn alloy group showed some improvements in early rat health and recovery of function. The alloy had a greater local accumulation of degradation products and inflammatory cells than Mg; however, both metals had an equally thin capsule (no difference in tissue irritation) and no toxicity or inflammation in neighboring nerve tissues. Therefore, Zn-2%Fe, like Mg, is biocompatible and has great potential for use in nervous tissue regeneration and repair.

ZnO@C Coated Cellulose-Based Separators Control Lithium Deposition Direction to Stable Lithium Metal Batteries.

Li metal anodes have attracted attention due to their high specific capacity and low electrochemical potential. Nevertheless, the uncontrolled growth of Li dendrites hinders the practical application of Li metal batteries. Although the various approaches have made performance improvements, safety hazards still exist since Li dendrites are still growing along the anode to the separator during the continuous plating/stripping process. Herein, a straightforward method is proposed to achieve stable Li metal batteries with directional growth control by using a functional ZnO@C/cellulose membrane as a separator. The abundant pore structure and functional groups of biomass cellulose enhance the Li-ion transport and interface compatibility. The ZnO transforms in situ to form a Li-Zn alloy layer which is uniformly coated to the separator to direct uniform ion concentration polarization and charge distribution polarization, control the growth direction of Li, significantly improve the cycling stability, and promote the reversibility of the Li plating/exfoliation process. As a result, the symmetric cell exhibits an extreme lifetime of more than 4500h and low polarization at 3mAcm-2 . The cycling performance of the Li||LiFePO4 full cell reaches a capacity retention of 98% after 270 cycles at a mass loading of 10mgcm-2 .

Understanding the interaction of {10–12} twins and Mg17Al12 precipitates in magnesium alloys via high-resolution electron microscopy

The interactions between {10 1‾ 2} twins and basal precipitates in the Mg–8Al-0.5Zn alloys have been investigated using high-resolution transmission electron microscopy. The underlying interaction mechanisms at different twinning processes were analyzed in detail. In the process of twin propagation, the twin tip can traverse across multiple basal precipitates in the form of nucleation of new twins on the opposite side of the precipitates and continuously expand in the grain. Such re-nucleation events are suggested to be driven by the local stress concentration arising from the twin impinging upon the precipitate. During twin thickening, the precipitates undergo a small elastic deflection rather than plastic shearing when the twin engulf them. Furthermore, a large number of I1 stacking faults are activated at the twin-precipitate interface to accommodate the twinning shear. The orientation relationship (OR) of the precipitates inside the twin is changed from Burgers to [2 1‾1‾ 0]α//[11 1‾]β, (0 1‾ 10)α//(011)β, (0001)α//(2‾ 11‾)β when they are engulfed by twin.

Microstructural evolution and mechanical properties of Mg-8.1Gd-2.6Y-0.7Zn-0.5Zr alloy by multi-layer wire arc additive manufacturing

Wire arc additive manufacturing (WAAM) of Mg-RE (rare-earth)-Zn alloys is important for meeting the requirements of lightweight large-scale components with high manufacturing flexibility. The Mg-8.1Gd-2.6Y-0.7Zn-0.5Zr (GWZ831K, wt.%) alloys were fabricated through the use of WAAM technology, and the microstructure evolution along the building direction and corresponding mechanical properties were then studied. The as-built sample in this paper was composed of finely equiaxed ɑ-Mg grains, eutectic (Mg, Zn)3(Gd, Y) phase, cubic phase, and γʹ precipitates. Furthermore, due to the in-suit heat treatments that were induced by the multiple thermal cycles, more γʹ precipitates were observed in the middle region. The microstructures at different heights were characterized by alternatively distributed fine equiaxed grains (melt pool boundaries, MPB) and coarse equiaxed grains (melt pools, MP). The mechanical properties of the as-built component were found to exhibit yield strength (YS), ultimate tensile strength (UTS), and elongation (EL) of 159 ± 1.0 MPa, 237 ± 4.0 MPa, and 6.7 ± 0.4 % in the building direction (BD) and 163 ± 5.1 MPa, 242 ± 8.7 MPa, and 7.0 ± 0.7 % in the traveling direction (TD). This demonstrates that the WAAM-processed GWZ831K alloy has good isotropy.

Effect of transverse gradient extrusion process on texture and mechanical properties of Mg–3Al–1Zn alloy sheets

Transverse gradient extrusion (TGE) processes with different die inclined angles of 15°, 30°, 45°and 60° were used to produce Mg–3Al–1Zn sheets, thereby tailoring texture and mechanical properties of Mg alloy sheets. Microstructure, deformation texture and final mechanical properties of the obtained sheets were detected and discussed. Furthermore, the rheological behavior of Mg alloys during extrusion was analyzed by finite element method. As the TGE die inclined angle changed, the flow velocity along the transverse direction (TD) and effective strain difference along extrusion direction (ED) were changed during extrusion, and therefore the microstructure and texture of extruded sheets are altered. With increase of TGE die inclined angles, fine grain size and uniform microstructure were obtained. The base poles of most grains for the extruded sheets gradually deviate from normal direction (ND) to ED at center region and inclined from ED to TD at 1/4 edge region. A large elongation of 33.9 % and a low yield stress of 125 MPa can be obtained in the TGE-45 sheet.

An insight into mechanical response and twinning behavior of bimodal textured AZ31 magnesium alloy under quasi-static and high strain rate compression

In this work, the dynamic, quasi-static response and twinning behavior of bimodal textured Mg–3Al–1Zn alloy is comparatively investigated at room temperature. The relationship between yield stress and bimodal texture is quantified and characterized as an increase of the yield stress with the increasing of the percentage of <0002>⊥ED (extrusion direction) component; the ultimate strength under high strain rate (103 s−1) was quite higher than that under quasi-static condition (10−3 s−1); but, the yield stress was just the reverse. The competition between twin nucleation and growth is significantly affected by a coupled effect of strain rate and texture. Twin nucleation shows positive strain rate sensitivity and is largely enhanced by dynamic deformation. However, the twin growth tendency is bimodal texture and strain rate dependent: it is favorable under quasi-static condition for samples with more soft orientations, while for samples with more hard orientations, dynamic deformation promotes twin growth. It is also found that a higher strain rate can stimulate the activation of more twin variant types in bimodal textured magnesium alloys.

Effect of Ag addition on the microstructure and corrosion properties of Sn–9Zn lead-free solder

The effects of Ag addition on the microstructure of Sn–9Zn alloy and its corrosion behaviour in neutral and static 3.5 wt% NaCl solutions were investigated using surface characterization techniques and electrochemical techniques. The results show that in Sn–9Zn-xAg alloys, Ag reacts with Zn to form AgZn3 intermetallic compounds (IMCs), which refined the microstructure of the alloys and changed the corrosion mode of the alloy surfaces from pitting corrosion to surface corrosion. The addition of Ag effectively improved the corrosion passivation film structure and electron transfer characteristics of the alloy, increased the self-corrosion potential (Ecorr) and reduced the self-corrosion current (Icorr), thus improving the corrosion resistance of the alloy. The study explained and verified the corrosion mechanism of the alloy from both experimental and theoretical perspectives. It is concluded that Sn–9Zn-0.4Ag alloy shows relatively the best corrosion resistance.

Mixture design optimization and machine learning-based prediction of Al-Mg alloy composite reinforced by Zn nanoparticles: A molecular dynamics study

Al-Mg alloy is widely used in various industries due to its practicality. It is crucial to achieve the highest possible tensile properties for this alloy. In this study, first, Zn nanoparticles were combined with the aluminum-magnesium alloy to modify their tensile properties. Then, a mixture design of experiment was utilized to find the best combination of Al-Mg-Zn alloy, which was validated through molecular dynamics simulation. Mechanical tests were also conducted on Al-1%Mg-1%Zn alloy at different temperatures and strain rates. The results suggested that when the temperature increases, the tensile properties decrease, while with higher strain rates they increase. Furthermore, four machine learning-based algorithms including Generalized Linear Model (GLM), Artificial Neural Network (ANN), Decision Tree (DT), and Random Forest (RF) were compared to determine the simplest and the most accurate one for the prediction of mechanical properties of Al-Mg-Zn alloy and due to the highest values of correlation coefficient, the ANN algorithm was found as the most accurate one for the prediction of mechanical properties. The GLM algorithm was also known as an appropriate algorithm to predict the mechanical properties. However, the DT and RF algorithms had low prediction precisions. Therefore, the parameters that were influential in the prediction precision of DT and RF algorithms were changed, and the best value of each parameter was obtained. It was found that the DT algorithm with a maximum depth of 6 has the highest precision prediction of mechanical properties. Furthermore, the RF algorithm had the highest accuracy for the prediction of mechanical properties with No. of trees = 4 and maximum depth = 4.

The influence of lead concentration on the properties of the electrodeposited zinc–lead alloy coatings

The effects the concentration of lead on zinc-lead alloys obtained from sulphate baths under continuous current deposition are described. The deposit morphology was analyzed using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) was used to determine the preferred crystallographic orientations of the deposits. Protection against corrosion properties studied in a solution of 3 % NaCl in the potentiodynamic polarization measurements (Tafel), It has been observed that the Zn–Pb alloy is characterized by enhanced the resistance of corrosion compared to the Zn alloys and the addition of Pb in the Zn-Pb increases the micro-hardness, XRD and SEM results an identify any coatings Zn-Pb alloy composition reveals that. Zinc - rich (η- phase).

Study on the influence factors of Pt-based catalyst on dehydrogen performance of ammonia borane hydrolysis-Which is more important, geometric effects or electronic effects?

The basic catalytic properties of catalysts are largely determined by their geometric and electronic structures. However, the geometric and electronic interference between the active atoms and their neighbors makes it difficult to determine the extent of the effects of geometric and electronic effects on the catalytic activity. In this paper, Pt-based (Fe, Co, Ni, Cu and Zn) alloy nanoparticles (NPs) were prepared by a one-step reduction method. Through X-ray diffraction (XRD) analysis, high-resolution transmission electron microscopy (HRTEM) analysis and X-ray photoelectron spectroscopy (XPS) analysis, the superior lattice compression effect of Pt3Cu was found. It has great influence on catalytic performance. However, with the increase of Cu content, electron transfer increases, and the effect of electron effect is greater than the effect of lattice compression. Among them, Pt3Cu has the best performance as the content of Pt is high, which is controlled by geometric effects. When the content of Pt is few, the catalytic performance of PtNi3 is the best, showing the results regulated by electronic effects. The d-band center and Bader charge are determined by DFT calculation, and the experimental results are verified. The results show that the position of the d-band center is in a volcanic trend with HER properties. Pt3Cu has a suitable d-band central position, which affects the adsorption and desorption behavior of H2O molecules in the hydrolysis reaction, thus affecting its catalytic performance. These results provide new insights into the relationship between the geometric and electronic effects of catalysts and their catalytic ammonia borane hydrolysis activity.

Influence of chloride ions on corrosion behaviour of zinc-alloy in the simulated body fluid solution

ABSTRACT The bio-corrosion behaviours of the Zn alloy in the simulated body fluid (SBF) at different chloride ion concentrations were investigated. The Potentiodynamic Polarisation Curve (PDP) and Electrochemical Impedance Spectroscopy (EIS) results indicate that the corrosion rate of Zn alloy decreases with higher chloride ion concentrations. The decrease in corrosion rate is due to the formation of a protective layer of ZnCl2 nanofibres and agglomerates. The surface morphology and analytical studies of the Zn alloy were carried out by scanning electron microscopy (SEM), EDX, atomic force microscopy (AFM), and X-ray diffractometry. The SEM, EDX, and X-ray diffraction studies indicate the formation of nanofibres and agglomerates of ZnCl2. The AFM measurements show the increase in surface roughness due to the in situ formation of nanofibres and agglomerates on the alloy surface. Therefore, these results are useful to tailor the design of Zn alloy-based biomedical materials being implanted for the living body.