Electrodeposition and characterization of Zn–Mn alloy coatings obtained from a chloride-based acidic bath containing ammonium thiocyanate as an additive

Díaz-Arista, P.; Ortiz, Z.I.; Ruiz, Hugo; Ortega, R.; Meas, Y.; Trejo, G.

doi:10.1016/j.surfcoat.2008.10.015

Cited by 50 publications

(43 citation statements)

References 23 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: 87%

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: 87%

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Khan¹,

Pashaei²,

Bajwa³

et al. 2015

Int. J. CMEM

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“…No significant changes are observed with the addition of the addictive PEG 10,000 and with the addition of a mixture of NH 4 SCN and PEG 10,000 (see Figures 2b and 2d), except by a slight diminishment on the current density, this loss in current density could be assigned to the presence of the additives. As discussed by Diaz-Arista et al [31] the PEG 10,000 can adsorb on the steel surface blocking of the active sites for hydrogen evolution, but the isocyanate, according to these authors has the function of complexing with the ions Zn decreasing the difference between the reduction potential of these two metallic species on the steel surface. The characterization of the coatings obtained with NH 4 SCN as addictive showed films with bad quality as weak adherence to the surface, inhomogeneity, and with no increase in the Mn proportion related to the presence of Zn.…”

Section: Bathmentioning

confidence: 99%

“…Electrodeposited alloys of Zn, such as Zn-Ni, Zn-Co and Zn-Fe, present higher corrosion resistance than pure zinc coatings. Also, it has been reported in the literature that Zn-Mn alloys show even better corrosion resistance properties [31][32][33][34]. The high corrosion resistance of these alloys is likely due to the dual protective effect of manganese: on the one hand Mn dissolves first because it is thermodynamically less noble than Zn, thereby protecting Zn; and on the other hand Mn ensures the formation of compounds with a low solubility product over the galvanic coating.…”

Section: Features Of Zn-mno 2 Batteriesmentioning

confidence: 99%

“…Although it has been reported that among the Zn alloys those of Zn-Mn show the highest corrosion resistance, their deposition process presents some drawbacks related to the bath instability and current efficiency. Among the various electrolytic baths and additives proposed to obtain Zn-Mn alloys, the use of a chloride-based acid bath with polyethylene glycol (PEG) as the additive seems very promising [31][32][33].…”

Section: Features Of Zn-mno 2 Batteriesmentioning

confidence: 99%

See 1 more Smart Citation

Electrodeposition of Alloys Coatings from Electrolytic Baths Prepared by Recovery of Exhausted Batteries for Corrosion Protection

Silva¹,

Maciel²,

Wohnrath³

et al. 2013

Modern Surface Engineering Treatments

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“…[23][24][25][26][27][28] Recently, more interests in the preparation of manganese were triggered because of their use in high manganese (10-30%) and high strength automotive steel, also named high-Mn TWIP steel, which can lead to a reduction of the weight and improvement of the safety of cars. [28][29][30][31] However, the manufacturing of this type of steel commercially was still obstructed because of the high cost of the production of manganese.…”

Section: Introductionmentioning

confidence: 99%

Novel process for producing hierarchical carbide derived carbon monolith and low carbon ferromanganese from high carbon ferromanganese

Liu

Kou

et al. 2017

RSC Adv.

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In this work, remelted high carbon ferromanganese was chosen as a consumable anode to produce porous carbon monolith and low carbon ferromanganese at the same time by molten salt electrolysis. During potentiostatic electrolysis, the anode fed manganese ions and iron ions into molten salts, with porous carbon left at the anode and ferromanganese deposited on the cathode. The anode residue was characterized by Xray diffraction, scanning electron microscopy, Raman spectrum and transmission electron microscopy.Results indicated that this type of porous carbon material with a high degree of graphitization has a multimodal pore system consisting of micropores, mesopores and macropores, which is hierarchical carbide derived carbon (CDC). The anode and cathode current efficiencies are estimated to be at least 92% and 80%, respectively. All results implied that it is feasible to prepare carbide derived carbon monoliths with a hierarchical pore structure and low carbon ferromanganese simultaneously by molten salt electrolysis.

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Electrodeposition and characterization of Zn–Mn alloy coatings obtained from a chloride-based acidic bath containing ammonium thiocyanate as an additive

Cited by 50 publications

References 23 publications

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Fabrication and characterization of electrodeposited and magnetron-sputtered thin films

Electrodeposition of Alloys Coatings from Electrolytic Baths Prepared by Recovery of Exhausted Batteries for Corrosion Protection

Novel process for producing hierarchical carbide derived carbon monolith and low carbon ferromanganese from high carbon ferromanganese

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