Determination of self-similarity of corrosion pits on aluminum caused by varying concentrations of hydrochloric acid using multifractal analysis

Authors

Ritzelle Joan B. Briones ⋅ PH Institute of Chemistry, University of the Philippines Los Baños
Rachelle Marie A. Bunan ⋅ PH Institute of Chemistry, University of the Philippines Los Baños
Rachel Guia P. Giron ⋅ PH Institute of Chemistry, University of the Philippines Los Baños
Jesus Felix B. Valenzuela ⋅ PH Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños

Abstract

Different concentrations of hydrochloric acid were used to simulate long-time chloride exposure. Using FracLac, a plug-in of ImageJ, digital pictures of the corroded aluminum metal strips were analyzed. Results obtained were used to determine the selfsimilarity of the corrosion pits and to calculate the average values of the heterogeneity parameters: |D₀−f(α(1))|, |D₀−f(α(−1))|, and α_max−α_min. The pits were found to be self-similar, but the self-similarity decreases upon increase of chloride concentration. Increase in chloride concentration also decreased the heterogeneity of the surface as presented by the trends among the heterogeneity parameters of the treatments.

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Issue

2005: Proceedings of the 23rd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2005-PB-25

Section

Poster Session PB

Published

2005-10-26

How to Cite

[1]

RJB Briones, RMA Bunan, RGP Giron, and JFB Valenzuela, Determination of self-similarity of corrosion pits on aluminum caused by varying concentrations of hydrochloric acid using multifractal analysis, Proceedings of the Samahang Pisika ng Pilipinas 23, SPP-2005-PB-25 (2005). URL: https://proceedings.spp-online.org/article/view/SPP-2005-PB-25.