Monitoring the Effectiveness of Water-Based Plants for the Inhibition of Metal

Year : 2026 | Volume : 13 | Issue : 01 | Page : 37 47
    By

    Ukpaka Chukwuemeka Peter,

  • Chioma Onwubiko Hosanna,

  • Okwu Kingsley,

  1. Professor, Department of Chemical/Petrochemical Engineering, Rivers State University Port Harcourt, Rivers State, Nigeria
  2. Lecturer II, Department of Chemical/Petrochemical Engineering, Rivers State University Port Harcourt, Rivers State, Nigeria
  3. Lecturer II, Department of Chemical/Petrochemical Engineering, Rivers State University Port Harcourt, Rivers State, Nigeria

Abstract

The temperature performance profile of the plant extracts shows that inhibition efficiency increased with increasing temperature of the system until at about 323K at 9.00hrs immersion time where a decline in inhibition efficiency occurred implying the opposite at higher temperatures and longer immersion time. Corrosion rate parameters changed with rise in temperature and exposure – immersion time. Plots of rates of corrosion against the volume(s) of the test inhibitor(s) in the corrosive mixture shows that at all volume(s) of the test inhibitor(s) – GF or SM water-based extract used there exists a visible and significant decrease in the value(s) of corrosion rate as the acid often struggles continuously to break and overcome the thin film barrier formed by capable molecules of the extract(s) on the metal surfaces. GC-MS and FT-IR analyses results confirm that SM & GF plant extracts contain molecules capable of inhibiting corrosion on medium carbon steel. SEM surface microstructure surface photographs show SM or GF water-based plant extract at higher volumes than the 1.0M HCl in the corrodent mixture had less pits and cracks on the carbon steel metal samples implying great reduction in the rate of corrosion on the medium carbon steel samples by phytochemical molecules of great affinity for MCS metal samples in the corrodent medium. The Weight Loss (g) with respect to Time, T(hrs) for MCS metal samples corrosion rate inhibition in complementary presence of varying volumes of SM plant extract, GF plant extract & 1.0 Molar concentration HCl corrosive solution at room temperature at different immersion time was monitored. Also, the Weight Loss (g) in teams of Temperature effect, T(K) for MCS metal samples corrosion rate inhibition in complementary presence of varying volumes of SM plant extract, GF plant extract & 1.0 Molar concentration HCl corrosive solution at room temperature at constant immersion time (3hrs), (6hrs) and (9hrs) was monitored as well.

Keywords: Acidic medium, inhibition, metal, monitoring, plants, water-based, weight loss

[This article belongs to Journal of Thin Films, Coating Science Technology & Application ]

How to cite this article:
Ukpaka Chukwuemeka Peter, Chioma Onwubiko Hosanna, Okwu Kingsley. Monitoring the Effectiveness of Water-Based Plants for the Inhibition of Metal. Journal of Thin Films, Coating Science Technology & Application. 2026; 13(01):37-47.
How to cite this URL:
Ukpaka Chukwuemeka Peter, Chioma Onwubiko Hosanna, Okwu Kingsley. Monitoring the Effectiveness of Water-Based Plants for the Inhibition of Metal. Journal of Thin Films, Coating Science Technology & Application. 2026; 13(01):37-47. Available from: https://journals.stmjournals.com/jotcsta/article=2026/view=241615


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Regular Issue Subscription Original Research
Volume 13
Issue 01
Received 25/02/2026
Accepted 26/02/2026
Published 25/03/2026
Publication Time 28 Days
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