Archives of Metallurgy and Materials

Mazurek, Anna; Bartoszek, Wojciech; Cieślak, Grzegorz; Gajewska-Midziałek, Anna; Oleszak, D.; Trzaska, M.

doi:10.24425/amm.2020.132829

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…recently, Mg has been introduced as the lightest and most commonly used metal, which unfortunately encounters problems such as poor wear and corrosion resistance [1][2][3]. electroless Ni-P plating has been considered as a practical approach to overcome this problem and improve the corrosion resistance [4,5]. however, applying the electroless nickel coating on Mg is faced with difficulties due to some reasons.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2021

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ElEctrolEss NickEl PlatiNg oN aM60B MagNEsiuM alloy via ti-Zr/sol-gEl coMPositE layEr as PrEtrEatMENtThe Ti-Zr and Ti-Zr/sol-gel were used as pretreatment layers before the electroless nickel coating on aM60b magnesium alloy. Scanning electron Microscopy was employed to investigate the surface morphology of the pretreated layers and applied electroless coatings. Chemical analysis of the Ti-Zr layer, and nickel coatings was done using the energy-Dispersive X-ray Spectroscopy. Moreover, the X-ray Diffraction and atomic force Microscopy methods were utilized to evaluate the microstructure and surface roughness of the electroless coatings, respectively. electrochemical impedance Spectroscopy was employed to study the corrosion behavior of Ni-P coatings. The results show that Ti-Zr layer has structural cracks, and the sol-gel film was covered all cracks entirely. The cauliflower-like electroless nickel coating was applied on both mentioned pretreated layers. The cross-sectional images revealed the higher thickness for the electroless coating on Ti-Zr/sol-gel layer, probably due to a large number of Ni nucleation centers. The eiS results demonstrate that the electroless coating on Ti-Zr/sol-gel has high corrosion protection and microhardness value.

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Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2021

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Effect of Ni-Coated Multi-Walled Carbon Nanotubes on the Properties of Ni-B Composite Coatings on Aluminium Alloys

Ma¹

2022

International Journal of Electrochemical Science

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In this study, a Ni-B-NiMCNT composite was successfully coated onto the surface of a 7075 aluminium alloy using the electrodeposition technique. To investigate and identify the coating properties, we performed XRD(X-Ray Diffraction), SEM(scanning electron microscopy), EDS(energy-dispersive spectroscopy), microhardness testing, and friction wear testing. We discovered that the grain size of the plated layer decreases after the addition of NiMCNT. Also, the uniform distribution of Ni-coated MCNT fills the cracks and gaps in the hydrogen precipitation process and alters the coating morphology. These properties offer the composite coating and substrate interface a strong bonding force. Additionally, NiMCNT causes the growth of small nodules by inhibiting grain growth. An excellent composite layer can be obtained at a current density of 2.5 A/dm 2 , temperature of 45 ℃, rotational speed of 350 r/min, and NiMCNT concentration of 0.6 g/L. The hardness of the composite coating is 1265.4 HV, which is 41.2% higher than that of the Ni-B coating. Also, the minimum average friction coefficient is 0.4857, which is 16.6% lower than the Ni-B coating. We employed electrochemical methods to investigate the corrosion resistance of Ni-B-NiMCNT composite plating in 3.5 wt.% NaCl solution. Results indicated that the corrosion resistance of the plate is enhanced when the concentration of NiMCNT in the plating solution is 0.2 g/L.

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Properties of Ni-B/B Composite Coatings Produced by Chemical Reduction

Gajewska-Midziałek,

Cieślak,

Gostomska

et al. 2023

Coatings

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The paper presents the results of research on composite Ni-B coatings with embedded particles of boron produced by a chemical reduction method and their influence on the mechanical, tribological, and corrosion properties of produced materials. Boron was used in two forms: an alloy component and nanoparticles incorporated into the Ni-B matrix. The coatings were deposited from a bath at different concentrations of dispersion phase. The paper also presents the characteristics of the used boron particles. Results of morphology and surface topography (SEM) as well as the structure (XRD) of the produced coatings are presented. The mechanical properties of the produced coatings, like Knoop hardness, Martens hardness, and indentation hardness, as well as the modulus of elasticity, were determined. The tribological tests were carried out using the ball-on-disc method. Electrochemical corrosion tests were conducted by the potentiodynamic method. The adhesion of the coatings to the substrate was evaluated by the scratch test method. Consequently, this investigation yielded a novel material in the form of Ni-B/B composite coatings, exhibiting significantly improved mechanical and tribological properties compared to Ni-B coatings without embedded particles of the dispersion phase.

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Archives of Metallurgy and Materials

Cited by 3 publications

References 17 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of Ni-Coated Multi-Walled Carbon Nanotubes on the Properties of Ni-B Composite Coatings on Aluminium Alloys

Properties of Ni-B/B Composite Coatings Produced by Chemical Reduction

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