Electrodeposition and characterization of Zn‐Mn coatings for corrosion protection

Ganesan, Selvarani; Ganesan, P.; Popov, Branko N.

doi:10.1016/j.surfcoat.2013.10.062

Cited by 49 publications

(35 citation statements)

References 29 publications

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“…1b-d, which shows that the coating morphology consists of hexagonal platelet morphology varied from mainly granular shape to least pyramidal shapes. Similar morphology of electrodeposited Mn-Zn alloys was also reported by other researchers [13,25,26]. Structural properties of both types of coatings are shown in Fig.…”

Section: Resultssupporting

confidence: 86%

“…In recent research and development activity on zinc-based alloy coatings, there is a growing interest in the use of Zn with various alloying elements like Mn and Zr. These elements (Mn and Zr) have an electrically, more negative potential (E°M n 2+ /Mn = −1.185 V vs. SHE (standard hydrogen electrode) and E°Z r 2+ /Zr = −1.45 V vs. SHE) when compared with Zn [13]. The alloys Zn-Mn, Zn-Zr and Zn-Zr-Mn show an interdependent effect with better corrosion resistance than the individual metals.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Khan¹,

Pashaei²,

Bajwa³

et al. 2015

Int. J. CMEM

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The MnO-Zn thin films were fabricated by radio frequency (RF) magnetron sputtering and compared with pulse electrodeposition (PED) Zn thin films, doped with MnO and ZrO nanoparticles. Surface morphology, structural properties, chemical composition and corrosion resistance of these coatings were investigated by using scanning electron microscopy, X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy, 3-D scanning interferometry and environmental chamber. Surface morphology and degree of crystallinity have different behaviours for different deposition methods. Pulse-coated films have polycrystalline structure with high surface roughness (R a ), whereas sputtered films are monocrystalline with reduced roughness (R a ). Corrosion tests of both RF sputter and PED films revealed that the distribution of corrosion products formed on the surface of sputter films were not severe in extent as in case of electrodeposited coatings. Results showed that the doping of ZrO nano-sized particles in Zn matrix and Mn-Zn composite films significantly improved the corrosion resistance of PED thin films. High electron mobility [7] and room temperature electrical conductivity of ZnO thin films make it perfect material for electronics equipment. Additional advantages of ZnO thin films and micro-nanostructure are abundance and non-toxicity of the ZnO material, low cast and quantum size effect. Depending on the application, tuning properties and band gap of ZnO is possible by doping another material such as: aluminum (Al), gallium (Ga), magnesium (Mg) and manganese (Mn).Also, there are advanced techniques of growing ZnO thin films and manufacturing such as metal organic chemical vapor deposition [8], radio frequency (RF) magnetron sputtering [9], sol-gel method and pulsed laser deposition [10]. Properties of ZnO thin films are investigated by using molecular beam epitaxy [11].Zinc plating is extensively used in corrosion protection of steel in many structural and general engineering applications. Zn coating on steel substrate provides with physical and mechanical properties as well as good corrosion resistance [12]. However, a high dissolution rate and low corrosion resistance limit the use of Zn coatings. In recent research and development activity on zinc-based alloy coatings, there is a growing interest in the use of Zn with various alloying elements like Mn and Zr. These elements (Mn and Zr) have an electrically, more negative potential (E°M n

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Khan¹,

Pashaei²,

Bajwa³

et al. 2015

Int. J. CMEM

View full text Add to dashboard Cite

show abstract

“…In this work, electrodeposition of ternary Zn-Mn-Ni alloys was investigated from the electrolyte based on a deep eutectic solvent. Previous researches have shown that binary Zn-Mn coatings [24] from ionic liquids are sacrificial to steel but dissolves rapidly in corrosive environments forming passivating corrosion products, whereas binary Zn-Ni coatings [25] cannot offer sacrificial protection to steel to higher amounts of Ni. But, when the two binary alloys are combined, the Zn-Mn-Ni alloy coatings are expected to show dual action, dissolving slowly in corrosive environments and at the same time producing passivating corrosion products.…”

Section: New Substances Materials and Coatingsmentioning

confidence: 99%

Studies on electrochemical deposition of novel Zn–Mn–Ni ternary alloys from an ionic liquid based on choline chloride

Fashu

Khan

2017

Prot Met Phys Chem Surf

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Ternary Zn-Mn-Ni alloy coatings were electrodeposited for the first time from a choline chloride based ionic liquid with the aim of collecting properties of binary Zn-Mn and Zn-Ni alloys into one alloy system. The effect of electrodeposition potential on the composition and corrosion performance of the obtained ternary Zn-Mn-Ni deposits was investigated and contrasted with the characteristics of Zn-Mn and Zn-Ni deposits. Cyclic voltammetry revealed that the deposition of ternary Zn-Mn-Ni alloys behaved differently from the deposition of binary Zn-Mn and Zn-Sn alloys and that Mn deposition takes place at positive potentials in the Zn-Mn-Ni electrolyte than in the Zn-Mn electrolyte due to the presence of Ni 2+ ions in the electrolyte. X-ray diffraction studies showed that the Zn-Mn-Ni ternary alloys consist of a lattice of Zn (with Mn and Ni imbedded inside) at low electrodeposition potentials and MnZn(with Ni imbedded inside) phase at high electrodeposition potentials. Chemical composition analysis show that the Mn content in the ternary Zn-Mn-Ni alloy increased with increase in electrodeposition potential, whereas Zn and Ni contents are suppressed. The corrosion tests results indicate that through addition of Ni into the Zn-Mn binary alloy, the Zn-Mn-Ni alloy tailored are more corrosion resistant than the Zn-Mn binary alloy whilst the passivation behavior is still preserved.

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“…The Zn-Mn alloy with Mn content up to 20 at.% can be easily deposited from various electrolytes such as sulphate [8], chloride [9], or pyrophosphate [10] based electrolyte. So, this alloy is a promising protective coating for steel parts.…”

Section: Introductionmentioning

confidence: 99%

“…The Zn-Mn coatings with high Mn content (30-50 at.% or more) showed in the past excellent results in corrosion tests [11,12], but also, they are often dendritic [11] and obtained with low current efficiency [13]. On the contrary, many authors have stated that Zn-Mn alloys with up to 20 at.% Mn posses better corrosion resistance than pure Zn [7][8][9]. Thus, the epoxy coating deposited on the Zn-Mn alloys containing maximum 16 at.% Mn was examined in this article.…”

Section: Introductionmentioning

confidence: 99%

The protective properties of epoxy coating electrodeposited on Zn–Mn alloy substrate

Bučko

Mišković‐Stanković

Rogan

et al. 2015

Progress in Organic Coatings

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Electrodeposition and characterization of Zn‐Mn coatings for corrosion protection

Cited by 49 publications

References 29 publications

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Studies on electrochemical deposition of novel Zn–Mn–Ni ternary alloys from an ionic liquid based on choline chloride

The protective properties of epoxy coating electrodeposited on Zn–Mn alloy substrate

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