AC impedance-emission spectroscopy of determining the electrochemical behavior of anodized aluminum in aqueous solutions

Khaled J. Habib; Sami J. Habib

doi:10.1117/12.498387

7 March 2006 AC impedance-emission spectroscopy of determining the electrochemical behavior of anodized aluminum in aqueous solutions

Khaled J. Habib, Sami J. Habib

Author Affiliations +

Proceedings Volume 4101, Laser Interferometry X: Techniques and Analysis; (2006) https://doi.org/10.1117/12.498387
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

In the present investigation, holographic interferometry was utilized for the first time to determine the rate change of the alternating current (A.C.) impedance of aluminium samples during the initial stage of anodization processes in aqueous solution without any physical contact. In fact, because the A.C impedance values in this investigation, were obtained by holographic interferometry, electromagnetic method rather than electronic method, the abrupt rate change of the A.C impedance was called A.C impedance-emission spectroscopy. The anodization process (oxidation) of the aluminium samples was carried out chemically in different sulphuric acid concentrations (0.5-3.125 % H2SO4) at room temperature. In the mean time, the real-time holographic interferometry was used to determine the difference of the A.C.impedance of two subsequent values, dZ , as a function of the elapsed time of the experiment for the aluminium samples in 0. 5%, 1.0%, 1.5%, and 3.125% H2SO4 solutions. The A.C impedance-emission spectra of the present investigation represent a detail picture of not only the rate change of the A.C.impedance throughout the anodization processes , but also, the spectra represent the rate change of the growth of the oxide films on the aluminium samples in different solutions. Consequently, holographic interferometric is found very useful for surface finish industries especially for monitoring the early stage of anodization processes of metals , in which the rate change of A.C. impedance of the aluminium samples can be determined in situ .

Citation Download Citation

Khaled J. Habib and Sami J. Habib "AC impedance-emission spectroscopy of determining the electrochemical behavior of anodized aluminum in aqueous solutions", Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); https://doi.org/10.1117/12.498387

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available