O.S.I. Fayomi

Tshwane University of Technology

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A.P.I. Popoola

Tshwane University of Technology

198

I.G. Akande

University of Ibadan

Oluranti Agboola

Covenant University

N. E. Udoye

Covenant University

A. A. Ayoola

Covenant University

Sunday Olayinka Oyedepo

Bells University of Technology

A.O. Inegbenebor

Covenant University

Joseph O. Dirisu

Covenant University

M. Abdulwahab

Federal University of Technology Owerri

O.O. Joseph

Covenant University

Cooperative Institutions

Covenant University

316

Tshwane University of Technology

Bells University of Technology

University of Ibadan

University of Johannesburg

Ahmadu Bello University

University of Lagos

Federal University of Technology

Obafemi Awolowo University

University of Nigeria

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A Review on the Efficacy of Electroplating in Deteriorating Environments

Journal of Physics Conference Series (2019)

O.S.I. Fayomi I G Akanade A A Sode

Abstract Electroplating is an electrochemical process that involves a chemical response of the constituents in an aqueous mixture, due to galvanic excitation that causes the formation of thin film layers i.e. the coating, on the substrate of the material. Very few surface finishing techniques exist that serve the purposes of various functional applications and aesthetic appeal. Electroplating stands out as one of those surface finishing techniques that impact peculiar properties. This paper presents an overview of the multifunction application and efficacy of electroplating in different corrosive environments.

Galvanic cell

10.1088/1742-6596/1378/4/042084

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Citations (6)

Tribo-Mechanical Investigation and Anti-Corrosion Properties of Zn-TiO2 Thin Film Composite Coatings from Electrolytic Chloride Bath.

International Journal of Electrochemical Science (2014)

O.S.I. Fayomi A.P.I. Popoola Roland Tolulope Loto

Zn-TiO2 (Zn-Ti) composite films were produced on mild steel substrate by electro-deposition from zinc based chloride solutions. The thin film coating was investigated using scanning electron microscopy coupled with energy dispersive spectroscopy (SEM/EDS), x-ray diffraction and atomic force microscopy (AFM). The anti-corrosion behaviour in 3.65% NaCl medium were studied using potentiodynamic polarization technique and characterized by high resolution optical microscope (HR- OPM). The wear and the hardness properties of the composite coatings were measure with high diamond microhardness tester and reciprocating sliding tester respectively. Experimental results show that co-deposited TiO2 particle provides new orientation of metal matrix and modified the surface structure which contributed maximally to the increase in hardness and wear resistance. More so, increase in anti-corrosion property of all the deposits fabricated is attributed to the formation of new phases, surface homogeneity of the developed coating and the thin oxide films of Ti.

Energy-dispersive X-ray spectroscopy

10.1016/s1452-3981(23)08059-8

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Citations (19)

The influence of aluminum metal matrix composite reinforcement - A mini review

AIP conference proceedings (2022)

N. E. Udoye A.O. Inegbenebor O.S.I. Fayomi Joseph O. Dirisu

The joined influence of fortifying metal matrix composites with separate and numerous particle reinforcing agents like hybrid metal matrix composites are utilized greatly in the manufacturing industry. This is attributed to the enriched mechanical and wears characteristics such as strength, impact and wear resistance. In the present study, a series of research undertakings were carried out. This paper directs the technologists and scientists towards the appropriate collection of materials by their constituents in the field of study and diverse methods used in the fabrication of metal matrix composites, especially on the metallurgical stir casting process.

Matrix (chemical analysis)

Metal matrix composite

10.1063/5.0092577

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Citations (1)

Optimization of Water Distribution Systems: A Review

Journal of Physics Conference Series (2019)

O.M. Awe S. T. A. Okolie O.S.I. Fayomi

Abstract A water distribution system (WDS), being a system of interconnected hydraulic elements ensures water distribution and supply to satisfy demands while optimization is applied in many systems and situations, thus making it an important paradigm in technology. When we try to optimize, we either minimize (resource consumption, cost) or maximize (profit, system performance). This paper reviews optimization of water distribution systems and presents different aspects of WDSs. It also presents the different optimization methods in a detailed manner. Finally, modern sophisticated optimization methods are refined enough to solve complex real-world problems such as WDS design and operations. The categories of challenges being solved include: new WDSs design; expansion and revamping of existing WDSs; pump operation; water quality management; calibration and system partitioning. Reliability, robustness and resilience considerations are often encountered in WDS literature and are still open to analysis because there is no generally acceptable model for permanent inclusion in WDSs optimization.

Robustness

Engineering optimization

10.1088/1742-6596/1378/2/022068

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Citations (18)

Inhibition Study and Adsorption Responses of Copper in Chicken Bone Ash Inhibited NaCl Environment

Corrosion & materials. (2024)

O.S.I. Fayomi

By examining the corrosive behaviour and adsorption characteristics of copper in a corrosive medium containing 0.5 M NaCl, the potential of chicken bone as a corrosion inhibitor was examined in this study. With inhibitor concentrations ranging from 0.2 to 0.8 g, the experiments were carried out at temperatures between 30 and 60 °C. The effectiveness of chicken bone ash as a corrosion inhibitor was evaluated using a variety of electrochemical analysis techniques, such as polarisation analysis and open circuit potential measurement. The electrochemical analysis’ findings demonstrated that chicken bone ash functions as a cathodic inhibitor, significantly slowing copper corrosion. The inhibitor outperformed all other concentrations tested and demonstrated its maximum inhibition efficiency at a temperature of 50°C. These findings were further supported by the adsorption parameter analysis, which showed that the copper surface responded quickly to the inhibitor’s adsorption, primarily through a physical adsorption process. A promising alternative for protecting copper in corrosive environments is the use of chicken bone as a corrosion inhibitor. The findings imply that chicken bone ash has inherent inhibitory properties that effectively slow down corrosion.

10.61336/jcm2024-1

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Experimental Study of the Interaction of Solanum Tuberosum Fluid as Additive in Electrodeposition Bath in the Presence of Zn-Tio2 on Mild Steel

Procedia Manufacturing (2016)

L.R. Kanyane O.S.I. Fayomi A.P.I. Popoola T. Monyai

Enhancing mild steel properties is necessary to meet global competiveness and performance during application. In this study, we report the effect of Solanum tuberosum as additive to Zn-TiO2 sulphate bath coating by electrodeposition method on low carbon steel. The interfacial and structural characteristics of the produced coating were examined by means of scanning electron microscopy equipped with energy dispersive spectroscopy (SEM/EDS). The corrosion resistance properties of the deposited coatings were assessed in 3.65% NaCl using linear polarization method and characterized by optical microscope (OPM). Diamond based microhardness tester was used to measure hardness of the composites. From the results, it is evident that Zn-TiO2-solanum coating resulted in improved performance as compared to Zn-TiO2 coating; both in hardness properties and corrosion resistance properties propagation as a result of its embedded structural build up.

Solanum tuberosum

Carbon steel

Energy-dispersive X-ray spectroscopy

10.1016/j.promfg.2016.12.087

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Citations (3)

The influence of steel die parameter and micro-structural investigation on AA6063 aluminum alloy

Oluwashina Philips Gbenebor S. O. Adeosun O.S.I. Fayomi O.O. Joseph

The study investigated the influence of steel die parameter and the microstructural evaluation of AA 6063 aluminum alloy extruded at room temperature using different die entry angles. Mild and tool steel dies of entry angles of 15o, 30o, 45o, 60o, 75o and 90o were used to extrude the work sample. Microstructural analysis, coupled with ram velocity, elongation, hardness, and maximum extrusion pressure of the extruded samples, were de-termined. It was observed that theaximum extrusion pressure required for extrusion and hardness of extruded samples increased with increasing die entry angle .Experimental results show that aluminum alloy deforms better when the die material is made of mild steel with die entry angles of 45o, 75o and 90o as compared to tool steel

Elongation

Source

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An overview of the influence of agro waste reinforcement on aluminium matrix composites

AIP conference proceedings (2022)

O.S.I. Fayomi J. W. Sojobi M. O. Nkiko I.G. Akande Ayodeji A. Noiki

The rise in demand for cheap and high performing engineering products for numerous application has continually attract the researcher's attention in the field of material science. The recent projections of eco-friendly, sustainable, future green and renewable manufactured goods allude increase in the use of agricultural waste in the upcoming decades. However, the high cost of synthetic reinforcement is a challenge, hence the need to source locally for an alternative reinforcement, cheap and readily available. This paper presents a comprehensive overview of studies carried out by several authors on the influence of various agro waste used in reinforcement of Aluminum matrix composites, highlights their influence on the mechanical properties, various applications of AMC and challenges encountered in the development of reinforced AMC.

10.1063/5.0093172

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Production of Adhesive from Cassava Starch

Journal of Physics Conference Series (2019)

A. A. Ayoola O.S.I. Fayomi I.G. Akande O.A. Adeeyo O.R. Obanla

Abstract The research work investigated the production of adhesive from cassava starch. Cassava tubers were processed into starch-based adhesives, using two different gelatinization enhancers (that is HCl and NaOH) which were introduced separately. The adhesives were produced by considering two varied process parameters, namely percentage weight of borax in starch solution (8 – 20%) and reaction temperature (65 – 85°C). Comparative analysis of the adhesive obtained (using HCl and NaOH as gelatinization enhancers) include the determination of its bond strength, viscosity, drying time, pH and density. As the borax weight percent increases up to 14 % and reaction temperature reduces (using NaOH) the drying time increases, while the drying time reduces as both the borax weight percent and temperature reduce (using HCl). The results of the adhesive physical properties fall within the standard range for each of the properties and this implied that the adhesive produced was of high quality.

Borax

10.1088/1742-6596/1378/3/032079

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Citations (5)

Effect of MgO/MnO2 Additives on the Structural Properties of Zinc Electroplated Mild Steel

Procedia Manufacturing (2019)

L.R. Kanyane O.S.I. Fayomi A.P.I. Popoola P.N. Sibisi

Low carbon steel is widely used in engineering applications due to its availability, physical properties and reasonable cost. Regardless of the massive use of mild steel in engineering applications, their application is limited to high tribology and corrosive environment are limited due to low corrosion resistance properties, low microhardness and poor tribological properties. The increase in service life and exceptional properties of reinforcement composite coatings for advanced engineering application has attracted many researchers world-wide. In this study, the effect of manganese oxide (MnO2) on Zn-MgO chloride bath coating by co-deposition route on mild steel is studied. The coating micrographs and surface thickness were examined by means of scanning electron microscope (SEM) coupled with energy dispersive spectroscopy (EDS) and PosiTector (SPG) respectively. The thermal stability of the synthesized composite coatings studied in isothermal furnace at 350°C. The findings of the studies are discussed in this paper.

Surface Engineering

Energy-dispersive X-ray spectroscopy

Carbon steel

10.1016/j.promfg.2019.05.038

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Citations (1)