Mechanical and opto-electrical response of embedded smart composite coating produced via electrodeposition technique for embedded system in defence application.
Fayomi, O.S.I. Atayero, A.A. Mubiayi, M.P. Akande, I.G. Adewuyi, P.A. Fajobi, M.A. Ayara, W.A. Popoola, A.P.I.
Fayomi, O.S.I.
Atayero, A.A.
Mubiayi, M.P.
Akande, I.G.
Adewuyi, P.A.
Fajobi, M.A.
Ayara, W.A.
Popoola, A.P.I.
Citations
Altmetric:
Abstract
The emergence of nanocomposite particulate with the increasing demand for opto-electrical properties for defence application has necessitated this study. In this work, an attempt was made to develop Zn-CeO2/Zn-CeO2-Al2SiO5 thin film composite on A356 mild steel using electrodeposition technique. The developed coating was attained in 2 V for 10 min at a constant current density of 1.5 A/cm2 and pH of 4.5. The mass concentration of Al2SiO5 was varied, ranging from 0 to 15 g. The composite coatings were characterized using Scanning electron microscope equipped with energy dispersive spectrometer (SEM/EDS). The corroding properties of the coated and uncoated sample were examined through potentiodynamic polarization technique via Autolab PGSTAT 101 Metrohm potentiostat/galvanostat with NOVA software of version 2.1.2 in 3.65% NaCl. The electrical characterization was carried out using voltage-ammeter meter and Keithley 2400 series source meter application tester. The opto-electrical investigation was done using a solar simulator with maximum intensity of 1000 W/m2 under an air mass of 1.5 at a working intensity of 750 W/m2. The outcome of various test and characterizations revealed that the electrodeposited Zn-CeO2/Zn-CeO2-Al2SiO5 possessed good stability, improved microstructural qualities, better electrical conductivity and outstanding corrosion resistance.
Description
Date
2018-09-16
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Research Projects
Organizational Units
Journal Issue
Keywords
Microhardness, Coating, Mild steel, Semiconductor, Agglomeration, Optoelectronics