Determination of linear tafel region from piecewise linear regression analysis

Tafel polarisation method is widely used in corrosion studies but relies heavily on the accurate extrapolation of the linear regions. To eliminate the ambiguity in the linear extrapolation, the present study develops a quantitative method based on piecewise linear regression analysis. In this method...

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Main Authors:	Mohamed Noor, Noraini, Othman, Raihan, Mohd Hatta, Maziati Akmal, Ani, Mohd Hanafi
Format:	Article
Language:	English
Published:	Electroactive Materials Society 2014
Subjects:	TA329 Engineering mathematics. Engineering analysis TP250 Industrial electrochemistry
Online Access:	http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/1/2014_IJEM.pdf

id	iium-37831
recordtype	eprints
spelling	iium-378312018-07-19T01:20:55Z http://irep.iium.edu.my/37831/ Determination of linear tafel region from piecewise linear regression analysis Mohamed Noor, Noraini Othman, Raihan Mohd Hatta, Maziati Akmal Ani, Mohd Hanafi TA329 Engineering mathematics. Engineering analysis TP250 Industrial electrochemistry Tafel polarisation method is widely used in corrosion studies but relies heavily on the accurate extrapolation of the linear regions. To eliminate the ambiguity in the linear extrapolation, the present study develops a quantitative method based on piecewise linear regression analysis. In this method, the entire polarisation data is divided into small sub-intervals and variation in the regression coefficient and linearity coefficient values are observed. Consistency in these values serves as a quantitative indicator of the linear Tafel regions. The method described is then demonstrated in potentiodynamic polarisation measurement of Al/NaCl (0.5 M) and Zn/KOH (1 M) systems. The piecewise linear regression analysis positively identified the linear regions from the polarisation branches and thus provided more accurate corrosion parameters of the systems. Electroactive Materials Society 2014-09 Article PeerReviewed application/pdf en http://irep.iium.edu.my/37831/1/2014_IJEM.pdf Mohamed Noor, Noraini and Othman, Raihan and Mohd Hatta, Maziati Akmal and Ani, Mohd Hanafi (2014) Determination of linear tafel region from piecewise linear regression analysis. International Journal of Electroactive Materials, 2. pp. 22-27. ISSN 2289-179X http://www.electroactmater.com/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TA329 Engineering mathematics. Engineering analysis TP250 Industrial electrochemistry
spellingShingle	TA329 Engineering mathematics. Engineering analysis TP250 Industrial electrochemistry Mohamed Noor, Noraini Othman, Raihan Mohd Hatta, Maziati Akmal Ani, Mohd Hanafi Determination of linear tafel region from piecewise linear regression analysis
description	Tafel polarisation method is widely used in corrosion studies but relies heavily on the accurate extrapolation of the linear regions. To eliminate the ambiguity in the linear extrapolation, the present study develops a quantitative method based on piecewise linear regression analysis. In this method, the entire polarisation data is divided into small sub-intervals and variation in the regression coefficient and linearity coefficient values are observed. Consistency in these values serves as a quantitative indicator of the linear Tafel regions. The method described is then demonstrated in potentiodynamic polarisation measurement of Al/NaCl (0.5 M) and Zn/KOH (1 M) systems. The piecewise linear regression analysis positively identified the linear regions from the polarisation branches and thus provided more accurate corrosion parameters of the systems.
format	Article
author	Mohamed Noor, Noraini Othman, Raihan Mohd Hatta, Maziati Akmal Ani, Mohd Hanafi
author_facet	Mohamed Noor, Noraini Othman, Raihan Mohd Hatta, Maziati Akmal Ani, Mohd Hanafi
author_sort	Mohamed Noor, Noraini
title	Determination of linear tafel region from piecewise linear regression analysis
title_short	Determination of linear tafel region from piecewise linear regression analysis
title_full	Determination of linear tafel region from piecewise linear regression analysis
title_fullStr	Determination of linear tafel region from piecewise linear regression analysis
title_full_unstemmed	Determination of linear tafel region from piecewise linear regression analysis
title_sort	determination of linear tafel region from piecewise linear regression analysis
publisher	Electroactive Materials Society
publishDate	2014
url	http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/1/2014_IJEM.pdf
first_indexed	2023-09-18T20:54:14Z
last_indexed	2023-09-18T20:54:14Z
_version_	1777410196834877440

Determination of linear tafel region from piecewise linear regression analysis

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