Impedance measurements of polyester-coated galvanised mild steel in 10xacid rainwater after an accelerated wet-dry test


Dehri I.

TURKISH JOURNAL OF CHEMISTRY, cilt.24, ss.239-245, 2000 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 24 Konu: 3
  • Basım Tarihi: 2000
  • Dergi Adı: TURKISH JOURNAL OF CHEMISTRY
  • Sayfa Sayısı: ss.239-245

Özet

The variation of defective polyester-coated performance with time in 10xacid rain solution was investigated using electrochemical impedance spectroscopy. Measurements were carried out on samples after an accelerated atmospheric corrosion test. The impedance diagrams (Nyquist plots) were simulated using the EQUIVCRT program which was elaborated by Boukamp and the semi-ellipse model which was developed by Erbil. It has been shown that the defective coating resistance changes with time for the samples subjected to acid rainwater. The corrosion rate of coated metal also changes with time.