Abstract
The electroless deposition method was used to prepare Ni-based nanocomposite coatings, this approach represents an alternate way of having coatings on the different substrates. Most of the previous literatures on this subject and work deals with a study the effect of the process conditions and, Bath composition on the microstructure at the macroscale of Ni-Al2O3 composite coatings. Though, effect on the step structure of the composition of the bath and microstructure are little, the present work aims to study the effect of hard ceramic Al2O3 nanoparticles at different concentrations (0.0, 0.5, 1.0, 2, 4) g/L, on the phase structure, microstructure and morphology of Al2O3 nanocomposite coating, in order to enhance the mechanical, plysical and chemical properties of nanocomposite coating. In this paper, An X-Ray diffraction method, spectroscopy (EDS), energy dispersive, and scanning electron microscope (SEM) were studied in the phase structure, chemical composition and morphological nanocomposition coatings. In the present paper, is evident from EDS study that the composite coating consists of Ni and nanoparticles of Al2O3. The micrograph study of the EDS showed that A flat and smooth surface is present in the deposited nanocomposite coating. Uniform distribution of nanoparticles of alumina within Ni-Matrix. And the XRD study showed the crystalline structure of the Ni- Al2O3 nanocomposite coating.
Highlights
Due to aluminium and its alloys characteristics like low density, light weight, and good corrosion resistance, used widely in the aerospace and automotive technology [1]
Electroless deposition nanocomposite coating technique is one of most common techniques used in scientific fields, as well as in industrial fields
Kadhim / Diyala Journal of Engineering Sciences Vol (14) No 3, 2021: 1-7 hard and wear proof surfaces with resistance to corrosion, nanocomposite electro-less coatings have recently been used in many applications in the chemical, automotive, aerospace and mechanical industries [11]
Summary
Due to aluminium and its alloys characteristics like low density, light weight, and good corrosion resistance, used widely in the aerospace and automotive technology [1]. Kadhim / Diyala Journal of Engineering Sciences Vol (14) No 3, 2021: 1-7 hard and wear proof surfaces with resistance to corrosion, nanocomposite electro-less coatings have recently been used in many applications in the chemical, automotive, aerospace and mechanical industries [11]. There is a movement towards using nanosized particles to enhance the mechanical properties wear and corrosion resistance as an additional component of composite coatings [21,22,23,24,25]. Another technique for obtaining coatings on the different substrates is electroless nickel matrix nanocomoposite coatings. They can be attractive and alternative to chromium coatings [26,27]
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