The metal/coating/electrolyte interfacial impedance and its global fractal model

✍ Scribed by J. Hubrecht; M. Embrechts; W. Bogaerts

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 785 KB
• Volume: 38
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(93)80308-m

✦ Synopsis

Aba~-l?tc impdancc spb*rum ol an immd coa~cd metal specimen gcnedly contains three Ireqwncy domains: the high frequency (HF) parr represents the coating characteristic, the intennaiiate frequency (IT) part stands for the corrosion ma&on and double layer bahaviour, and chc low frequency (LF) pul is wnnoztal to the dilTusion proof In general. epcb d these deviate from the id4 smooth interface model, because of Ihe presence of some inhomgoeity. roughness, tic. In this paper, wrrwtions 10 the 'ideal" model are proposed supported by fractal insights. Morwver. the LF delusional impedance is generala towards a sysko~ of two serial diffusion layen. and Ihe parts are assanbkd into an overall impedamxmodd.