Enhanced mechanical and corrosion protection properties of pulse electrodeposited NiP-ZrO<sub>2</sub> nanocomposite coatings
<p dir="ltr">Pulse electrodeposition is a technique of particular interest, which offers promising advantages such as ease of processing, compositional control, uniformity in structure, and grain refinement. In the present study, NiP-ZrO<sub>2</sub> nanocomposite coatings...
محفوظ في:
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| مؤلفون آخرون: | , , , , , , |
| منشور في: |
2020
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إضافة وسم
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| الملخص: | <p dir="ltr">Pulse electrodeposition is a technique of particular interest, which offers promising advantages such as ease of processing, compositional control, uniformity in structure, and grain refinement. In the present study, NiP-ZrO<sub>2</sub> nanocomposite coatings containing various concentrations of ZrO<sub>2</sub> nanoparticles (ZONPs) were deposited on low alloy steel (30CrMnSi) through pulse electrodeposition technique. The ZONPs in concentration of 0.0, 0.25, 0.50, 0.75, and 1.0 g/L were added in the electrolyte bath to obtain NiP-ZrO<sub>2</sub> nanocomposite coatings. Furthermore, to elucidate the role of ZONPs in the NiP matrix, the structural, morphological, mechanical, and electrochemical properties of NiP-ZrO<sub>2</sub> nanocomposite coatings were studied thoroughly. FESEM and EDX results reveal the successful incorporation of ZONPs into the NiP matrix. XRD and XPS analysis confirm the formation of a pure phase NiP structure without any noticeable defects. A considerable improvement in the mechanical response was observed with an increasing amount of ZONPs, reaching to highest values (hardness 6.7 GPa, modulus of elasticity 21.72 GPa) for NiP-1.0 ZrO<sub>2</sub> coating composition. Similarly, the electrochemical results show a gradual increase in corrosion protection behavior of the NiP-ZrO<sub>2</sub> coatings with increasing ZONP concentration, reaching an eventual value ~5.8 kΩ cm<sup>−2</sup> at NiP-1.0 ZrO<sub>2</sub> coating composition, which is six times greater than the pure NiP coatings. These improvements in the mechanical and electrochemical response of NiP-ZrO<sub>2</sub> nanocomposite coatings highlight their suitability for applications such as oil and gas pipelines.</p><h2>Other Information</h2><p dir="ltr">Published in: Surface and Coatings Technology<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.surfcoat.2020.126340" target="_blank">https://dx.doi.org/10.1016/j.surfcoat.2020.126340</a></p> |
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