Electrodeposition of Ni-Al<sub>2</sub>O<sub>3</sub>nano composite coating and evaluation of wear characteristics

Raghavendra, C. R.; Basavarajappa, S.; Sogalad, Irappa

doi:10.1088/1757-899x/149/1/012110

Cited by 16 publications

(9 citation statements)

References 20 publications

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“…The electrodeposition process was carried out in a 250-mL beaker at 50°C using a current density of 5A/ dm 2 and magnetic stirring of 250 rpm for 30 min, to prevent particle agglomeration during deposition. These parameters were selected to comply with the optimized values published in previous studies [14,19].…”

Section: Electrodepositionmentioning

confidence: 99%

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Effect of thermal processing on the tribology of nanocrystalline Ni/TiO2 coatings

Cooke

Khan

2018

emergent mater.

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The tribological performance of a nanocrystalline coating is heavily influenced by its composition, morphology, and microstructural characteristics. This research work describes the effect of heat treatment temperature on the microstructural, morphological, and mechanical behavior of nanocrystalline Ni/TiO 2 coatings produced by electrophoresis. The surface morphology and coating cross section were characterized by scanning electron microscopy (SEM). The composition of coatings and the percentage of TiO 2 nanoparticles incorporated in the Ni matrix were studied and estimated by using an energy-dispersive spectroscopic (EDS) analysis, while x-ray diffractometry (XRD) was used to investigate the effect of heat treatment temperature on phase structure. The results showed agglomeration of TiO 2 nanoparticles on the surface of the coating. The high hardness and wear resistance recorded for the as-deposited coating was attributed to the uniform distribution of TiO 2 nanoparticle clusters throughout the cross section of the coating. Heat treatment of the Ni/TiO 2 coatings to temperatures above 200°C led to significant grain growth that changed the surface morphology of the coating and reduced the strengthening effects of the nanoparticles, thus causing a reduction in the hardness and wear resistance of the coatings.

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Section: Electrodepositionmentioning

confidence: 99%

“…The inclusion of the ceramic particles in the coating and the uniformity of particle distribution are critical to achieving wear-resistant coatings [15][16][17][18][19]. Optimization of the coating parameters can lead to substantial improvements of the coating's wear resistance [20,21].…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal processing on the tribology of nanocrystalline Ni/TiO2 coatings

Cooke

Khan

2018

emergent mater.

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“…The applied load in the dry sliding wear is more predominant [25]. The Al 2 O 3 particles in deposit are influencing on the wear resistance [26], and the abrasive nature of wear is highlighted due to the presence of hard particles. The increase in the load increases the load on the asperities which are actually in contact with the counter body (disc).…”

Section: Influence Of Operating Parameters On the Specific Wear Ratementioning

confidence: 99%

“…The significance of coating with reinforcement particles is to increase/enhance properties, viz. tribological, mechanical and corrosion resistance [1][2][3]. The substrate and the coating materials are connected to cathode and anode terminals respectively during the electrodeposition process.…”

Section: Introductionmentioning

confidence: 99%

Optimization of wear parameters on Ni–Al2O3 nanocomposite coating by electrodeposition process

Raghavendra¹,

Basavarajappa

Sogalad

2018

SN Appl. Sci.

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The present work concentrates on the nanocomposite coating on the mild steel substrate. The mild steel substrate demands good surface preparation in order to have better adhesive strength of coating. In the light of this, surface is grinded and cleaned later followed by rinsing. In this work, Ni-Al 2 O 3 composite coating was successfully coated on mild steel (AISI 1018) substrate. The study on different wear parameters on the specific wear rate is carried on. The experimental design is carried out with 20 trails as per central composite design considering normal load, sliding speed and sliding distance on the samples. The morphology of surface after coating and wear analysis is studied. The results revealed higher wear resistance by the presence of nano-Al 2 O 3 particles in the Ni matrix composite coating. The effect of normal load and its interaction with sliding distance are found to be more effective on specific wear rate. The abrasive nature of wear is observed due to the presence of hard Al 2 O 3 nanoparticles embedded in the Ni matrix. The chemical composition and distribution of particle analysis is carried out by SEM and EDS micrograph.

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“…Parameters such as current density, particle concentration, pH, surfactant concentration, stir rate, and temperature, have been shown to affect the properties of the coatings [1,[6][7][8]. Current density has been shown to positively affect the wear resistance of the coatings, because as the current density increases, the grain size of the nickel matrix decreases, which strengthens the coating and increases its wear resistance [9,10]. Similar observations were made by Jung et al who studied Ni/Al 2 O 3 coating [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat-Treatment on the Thermal and Mechanical Stability of Ni/Al2O3 Nanocrystalline Coatings

Cooke

Khan

Shar

2020

JMMP

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Heat-treatment is a frequently used technique for modifying the physical and chemical properties of materials. In this study, the effect of heat-treatment on the mechanical properties, thermal stability and surface morphology of two types of electrodeposited coatings (pure-Ni and Ni/Al2O3) were investigated. The XRD analyses showed that the crystal structure of the as-deposited coating changes from slightly amorphous to crystalline as the heat-treatment temperature increases. The heat-treatment of both the pure-Ni and the Ni/Al2O3 coating caused an increase of the grain size within the coatings. However, the unreinforced Ni coating experienced a faster growth rate than the Ni/Al2O3 coating, which resulted in a larger average grain size. The temperature-driven changes to the microstructure of the coatings caused a reduction in the hardness and wear resistance of the coatings. The presence of nanoparticles within the Ni/Al2O3 coating can successfully extend the operational temperature range of the coating to 473 K by pinning grain boundaries.

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Electrodeposition of Ni-Al₂O₃nano composite coating and evaluation of wear characteristics

Cited by 16 publications

References 20 publications

Effect of thermal processing on the tribology of nanocrystalline Ni/TiO2 coatings

Effect of thermal processing on the tribology of nanocrystalline Ni/TiO2 coatings

Optimization of wear parameters on Ni–Al2O3 nanocomposite coating by electrodeposition process

Effect of Heat-Treatment on the Thermal and Mechanical Stability of Ni/Al2O3 Nanocrystalline Coatings

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Electrodeposition of Ni-Al2O3nano composite coating and evaluation of wear characteristics

Cited by 16 publications

References 20 publications

Effect of thermal processing on the tribology of nanocrystalline Ni/TiO2 coatings

Effect of thermal processing on the tribology of nanocrystalline Ni/TiO2 coatings

Optimization of wear parameters on Ni–Al2O3 nanocomposite coating by electrodeposition process

Effect of Heat-Treatment on the Thermal and Mechanical Stability of Ni/Al2O3 Nanocrystalline Coatings

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Electrodeposition of Ni-Al₂O₃nano composite coating and evaluation of wear characteristics