Akademik Veri Yönetim Sistemi
JOURNAL OF ANATOLIAN ENVIRONMENTAL AND ANIMAL SCIENCES, cilt.11, sa.2026, ss.1-8, 2026 (TRDizin)
In this study, the effect of plant-derived β–pinene (BP, CH₂=C(CH₃)–CH₂–C₆H₉) on the corrosion
behavior of cobalt (Co) in the presence of 3-amino-1,2,4-triazole (ATA, C₂H₄N₄) and 1H-1,2,3-benzotriazole
(BTA, C₆H₅N₃) triazole agrochemicals in 0.5 M and 0.05 M H₂SO₄ acid at 25°C was investigated using
electrochemical techniques. The techniques including open circuit potential (EOCP-time), electrochemical
impedance spectroscopy (EIS), and Tafel curves were employed to evaluate the corrosion performance. The
results revealed that BP exhibited a synergistic effect with both compounds, forming (BTA/BP) Co and
(ATA/BP) Co structures that enhanced corrosion protection at acidic concentrations, while significantly
reducing the adverse effects of toxic triazoles through interaction with β-pinene. This synergistic interaction
was particularly pronounced in 0.5M with BTA, where a stable and protective surface film was formed on
the cobalt surface. As a result of this film formation, the corrosion current density decreased significantly
from 50 μA/cm² to 9.5 μA/cm², corresponding to approximately 81% inhibition efficiency. Moreover,
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS) analysis confirmed that the cobalt ion
concentration decreased from 2669 ppb to 132 ppb in 0.5 M H₂SO₄ and from 2350 ppb to 641 ppb in 0.05 M
H₂SO₄, indicating a more pronounced inhibition effect at the higher acid concentration. The electrochemical
results are in good agreement with the ICP–MS findings, confirmed the formation of a triazole–β-pinene
complex and its strong protective performance on the cobalt surface.