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All Journal Teknomekanik Innovation in Engineering
Abideen T. Oyewo
Department of Mechanical Engineering, Faculty of Engineering, Osun State University, Nigeria
Engineering Mechanical Engineering

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Investigation of corrosion, hardness, and wear rate of rice husk-zinc composite coating on A36 steel using dual anode electrolytic deposition technique Samuel Ajayi; Peter Ikubanni; Peter Onu; Timothy A. Adekanye; Abideen T. Oyewo; Olufemi Ajide
Teknomekanik Vol. 8 No. 2 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i2.42172

Abstract

Zinc-bas ed composite coatings developed from synthetic ceramics (Si3N4, SiC, and Al2O3) have recently been employed as reinforcement to enhance their resistance to deterioration. However, there is limited literature on the utilization of ceramic particles sourced from agro-industrial wastes in the formulation of these coatings. This study investigated the effect of the surface improvement process (SIP) using rice husk (RH) nanoparticles on the hardness and wear rate of A36 steel. The A36 steel, zinc bar, and RH nanoparticles were procured and characterized using Energy Dispersive Spectroscopy (EDS). Four cathode specimens were produced, including an as-received specimen of A36 steel and two anodes of zinc. Four steel specimens coated with Zn-10RH(t25), Zn-10RH(t30), Zn-15RH(t25), and Zn-15RH(t30), denoted as S1, S2, S3, and S4, respectively, were developed with concentrations of 10 or 15 g/L and deposition times of 25 or 30 minutes at a constant cell voltage of 0.5 V. The as-received substrate steel was used as the control specimen (CS). The hardness and wear rate (WR) properties of the deposited samples were examined using Vickers hardness (HV) and a Pin-on-disc tribometer, respectively. All coated specimens exhibited substantial improvements in hardness and wear rate properties compared to CS (Hardness = 85.82±0.45 HV and WR = 2.45±0.34 g/min). For the coated specimens, the hardness and WR values ranged from 188.50 to 288.37 HV, 260.34 to 284.38 MPa, and 0.01 to 0.02 g/min, respectively. The inclusion of the coatings significantly enhanced the mechanical properties of the deposited specimens.
Economic influence of corrosion on mild steel in an industrial setup: An overview Samuel Adebanji Ajayi; Olufemi Ajide; Abideen T. Oyewo; Ejiroghene Onokpite; Agberegha Larry Orobome; Christian O. Osueke
Innovation in Engineering Vol. 3 No. 2 (2026): (September 2026) – In Progress
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/ie.v3i2.48

Abstract

Most manufacturing industries throughout the world are facing many corrosion problems.  Contaminants such as CO2 and H2S which deteriorate pipe lines and machine components made from mild steel are the major challenge of these industries. Corrosion is a pervasive and financially detrimental process that significantly impacts industrial operations, with mild steel being particularly susceptible due to its widespread use and inherent reactivity. This paper examines the multifaceted economic influence of mild steel corrosion within an industrial setting, distinguishing between direct and indirect costs. The direct economic burden includes expenses related to frequent maintenance, repair, and premature replacement of corroded assets, as well as capital costs associated with overdesign and the implementation of corrosion control measures. Indirect costs, often more substantial and difficult to quantify, encompass losses from production downtime, decreased operational efficiency, product contamination, and environmental cleanup. By synthesizing data from various industrial sectors, this paper highlights that the total cost of corrosion represents a considerable percentage of a nation's Gross Domestic Product (GDP). Proactive corrosion management, including the strategic use of coatings, cathodic protection, and material selection, is identified as a critical factor in mitigating these financial losses and enhancing the longevity, safety, and profitability of industrial infrastructure. 
Co-Authors Agberegha Larry Orobome Christian O. Osueke Ejiroghene Onokpite Olufemi Ajide Peter Ikubanni Peter Onu Samuel Adebanji Ajayi Samuel Ajayi Timothy A. Adekanye