Composite Coating on Aluminum-Based Alloys Through Ni-P Electroless Plating Route

Jamal, Naghma; Mohanty, Shalini; Raj, S. Amruth; Das, Alok Kumar

doi:10.1007/978-981-33-6029-7_9

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Figure 9 b shows the diffraction peaks of the composite coating constituting Al, Al-Ni, MoS 2 , and Ni-Fe. The peaks of MoS 2 demonstrate the improvement in the lubricity properties of the samples [ 36 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

et al. 2022

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The work aimed to produce Ni-P-MoS2-Al2O3 on Al-7075 alloys with multiple attributes through an electroless (EL) plating route. The effects of additives (MoS2 and Al2O3) in the EL bath on the surface morphology, topography, hardness, composition (phase and elemental), roughness, wettability, and coating thickness were evaluated. Results indicate a substantial enhancement in microhardness of the EL-coated surfaces by 70% (maximum hardness = ~316 HV) using powders, and 30% (244 HV) without powders. The maximum coating thickness and water contact angle obtained with powders were 6.16 μm and 100.46°, respectively. The coefficient of friction for the samples prepared using powders was 0.12, and for the base material it was 0.18. The compositional analysis through EDS and XRD suggested the incorporation of a hard and lubricious layer on the EL-coated surface owing to the presence of different phases of Al, Mo, P, Zn, O, and S. Therefore, the resulting coating surfaces impart hardness, self-lubrication, hydrophobicity, and wear resistance simultaneously.

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Section: Resultsmentioning

confidence: 99%

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

et al. 2022

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“…The addition of powdered particles in the EL-bath influence the mechanical, chemical, tribology, and corrosion-resistance properties of the coated surfaces [7]. By addition of nanoparticles, the operational variables of coatings (i.e., temperature, heat treatment and chemical compositional of the bath) influence the corrosion properties [15][16][17].…”

Section: Ni Reducing Agentmentioning

confidence: 99%

“…To subside these issues, the performance improvement of Al-6061 in terms of mechanical, metallurgical, and tribology properties is necessary. Thus, different coating methods are adopted to improve their performance, including dip coating, anodizing, thermal spraying, electroplating, micro-electric discharge coating, galvanizing, physical vapor deposition (PVD), electroless plating, etc [5][6][7][8]. Most of the processes involve either thermal treatment or are expensive.…”

Section: Introductionmentioning

confidence: 99%

Electroless Ni-P-MoS₂ composite coating of Al-alloys: effect of surface textures and bath composition

Mohanty,

Singh,

Dwivedi

et al. 2023

Phys. Scr.

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The present work assesses the effect of textures and bath composition on Ni-P-MoS2 electroless composite coating. Aluminium alloys are subjected to textures (through electrical discharge machine) for using as substrate material in the present context of study. A comparison study is conducted to evaluate the effect of coatings on textured and non-textured surfaces prepared in two different baths (oxalic acid and hydrazine). Different surface characterization has been carried out including micro-hardness, surface roughness, topography, morphology, tribology through micro-scratch test, and composition analysis (using Energy Dispersive Spectroscopy) in the study. Results indicate that the textured coated surfaces impart better wear-resistant properties than those of coatings produced in non-textured ones. Moreover, the coating prepared using oxalic acid bath imparts better micro-hardness and tribological properties than those of hydrazine bath. The elemental presence of Mo, S, Ni and P was affirmed through EDS mapping, indicates transference of MoS2 particles on to the coated surfaces. The micro-hardness of different coated specimen prepared using oxalic acid bath range from 53.55 HV0.2 to 71.31 HV0.2 for non-textured samples and 70.47 HV0.2 to 113.52 HV0.2 for textured ones. It varied from 53.68 HV0.2 to 68.85 HV0.2 for non-textured surfaces and 63.03 HV0.2 to 98.27 HV0.2 for textured surfaces in hydrazine bath. The addition of MoS2 powder in the electroless bath account for the deposition of a tribo-adaptive layer on Al-alloys.

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Comparative study on electroless composite coatings of textured and untextured Al-substrates

Singh

Mohanty

Singh³

et al. 2023

Materials Today: Proceedings

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Composite Coating on Aluminum-Based Alloys Through Ni-P Electroless Plating Route

Cited by 3 publications

References 11 publications

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

Electroless Ni-P-MoS₂ composite coating of Al-alloys: effect of surface textures and bath composition

Comparative study on electroless composite coatings of textured and untextured Al-substrates

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Composite Coating on Aluminum-Based Alloys Through Ni-P Electroless Plating Route

Cited by 3 publications

References 11 publications

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

Electroless Ni-P-MoS2-Al2O3 Composite Coating with Hard and Self-Lubricating Properties

Electroless Ni-P-MoS2 composite coating of Al-alloys: effect of surface textures and bath composition

Comparative study on electroless composite coatings of textured and untextured Al-substrates

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Electroless Ni-P-MoS₂ composite coating of Al-alloys: effect of surface textures and bath composition