Effect of titanium oxide ceramic particles concentration on microstructure and corrosion behaviour of $$\text {Ni}$$–$$\text {P}$$–$$\text {Al}_{{2}}\text {O}_{{3}}$$–$$\text {TiO}_{{2}}$$ composite coating

Mohsenifar, Farhad; Ebrahimifar, Hadi

doi:10.1007/s12034-020-2068-x

Cited by 7 publications

(2 citation statements)

References 59 publications

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“…The superelastic effect of NiTi particles was observed in the Hertzian indentation behavior of the annealed composite coatings. In the study, Mohsenifar and Ebrahimifar [31] studied properties of the Ni-P-Al 2 O 3 -TiO 2 composite coating, which was made on AISI 316 steel using a direct current deposition technique. The microstructure of the coating and its corrosion resistance were studied by changing the amount of titanium oxide (1, 2, 3 and 4 g/L) in the bath.…”

Section: Discussionmentioning

confidence: 99%

Microstructure and Properties of Electroless Ni-P/Si3N4 Nanocomposite Coatings Deposited on the AW-7075 Aluminum Alloy

et al. 2021

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The article presents the results of mechanical and tribological tests of Ni-P/Si3N4 nanocomposite coatings deposited on the AW-7075 aluminum alloy using the chemical reduction method. The influence of the chemical composition on the Vickers microhardness determined by the DSI method was examined. The nanocomposite layers were made of Si3N4 silicon nitride in a polydisperse powder with a particle size ranging from 20 to 25 nm. The influence of the content of the dispersion layer material on the adhesion to the substrate was analyzed. The abrasive wear was tested and determined in the reciprocating motion using the “ball-on-flat” method. The surface topography was examined by the contact method with the use of a profilometer. Based on the obtained test results, it was found that the Ni-P/Si3N4 layers produced in the bath with the Si3N4 nanoparticle content in the amount of 2 g/dm3 are more resistant to wear and show greater adhesion than the Ni-P/Si3N4 layers deposited in the bath with 5 g/dm3 of the dispersion phase. NiP/Si3N4 layers provide protection against abrasive wear under various loads and environmental conditions.

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Section: Discussionmentioning

confidence: 99%

Microstructure and Properties of Electroless Ni-P/Si3N4 Nanocomposite Coatings Deposited on the AW-7075 Aluminum Alloy

et al. 2021

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“…Many studies prove and indicate [4][5][6][7][8][9][10][11][12][13][14][15][16][17] that electroless nickel and boron layers can be successfully applied on a wide variety of materials and are among the best solutions to increase the resistance of the surface layer to abrasive wear and scuffing. In addition to their high hardness and good anti-wear properties, such layers also have good anti-corrosion and adhesion properties, which are particularly important in the areological system.…”

Section: Introductionmentioning

confidence: 99%

Influence of Dispersed Phase Content on the Mechanical Properties of Electroless Nanocomposite Ni-P/Si3N4 and Hybrid Ni-P/Si3N4/Graphite Layers Deposited on the AW-7075 Alloy

Czapczyk,

Zawadzki,

Wierzbicka

2023

Materials

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The article presents the results of mechanical testing of Ni-P/Si3N4 nanocomposite and hybrid Ni-P/Si3N4/graphite coatings deposited on AW-7075 aluminum alloy using the chemical reduction method. In terms of mechanical testing, microhardness was measured, and surface roughness and adhesion of the coatings to the aluminum substrate were determined using the “scratch test” method. The surface morphology of the deposited layers was also analyzed using light microscopy and scanning electron microscopy. Samples made of AW-7075 aluminum alloy with electroless deposited Ni-P/Si3N4 nanocomposite, Ni-P/graphite composite and hybrid Ni-P/Si3N4/graphite coatings with different content of dispersed phases were tested, and also, for comparison purposes, the Ni-P layer that constituted the matrix of the tested materials. Reinforcing phases in the form of silicon nitride nanoparticles and graphite particles were used in the layers. The purpose of the research was a thorough characterization of the coating materials used on aluminum alloys in terms of mechanical properties. Graphite is considered in this paper as it enables the reduction of the coefficient of friction through its lubricating properties. Unfortunately, graphite is difficult to use in selected layers as the only dispersion phase, because it has much lower hardness than the Ni-P coating. For this reason, a layer with a single dispersion phase in the form of graphite will be characterized by worse mechanical properties. It is necessary to add particles or nanoparticles with hardness higher than the base Ni-P coating, e.g., Si3N4, which improve the mechanical properties of the coating. The presented analyses of the results of the conducted research complement the previous studies on selected properties of nanocomposite layers with an amorphous structure and supplement the knowledge regarding their suitability for application to aluminum machine parts.

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Effect of duty ratio on properties of Ni-P-Al2O3-PTFE nanocomposite coatings by pulsed jet electrodeposition

Zheng

Liu

et al. 2023

Bull Mater Sci

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Effect of titanium oxide ceramic particles concentration on microstructure and corrosion behaviour of $$\text {Ni}$$–$$\text {P}$$–$$\text {Al}_{{2}}\text {O}_{{3}}$$–$$\text {TiO}_{{2}}$$ composite coating

Cited by 7 publications

References 59 publications

Microstructure and Properties of Electroless Ni-P/Si3N4 Nanocomposite Coatings Deposited on the AW-7075 Aluminum Alloy

Microstructure and Properties of Electroless Ni-P/Si3N4 Nanocomposite Coatings Deposited on the AW-7075 Aluminum Alloy

Influence of Dispersed Phase Content on the Mechanical Properties of Electroless Nanocomposite Ni-P/Si3N4 and Hybrid Ni-P/Si3N4/Graphite Layers Deposited on the AW-7075 Alloy

Effect of duty ratio on properties of Ni-P-Al2O3-PTFE nanocomposite coatings by pulsed jet electrodeposition

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