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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| Format: | Article |
| Language: | English |
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Electroactive Materials Society
2014
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| Online Access: | http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/1/2014_IJEM.pdf |
| _version_ | 1848781480761753600 |
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| 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 |
| building | IIUM Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T15:50:14Z |
| format | Article |
| id | iium-37831 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:50:14Z |
| publishDate | 2014 |
| publisher | Electroactive Materials Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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/ |
| 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 |
| title | 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_short | Determination of linear tafel region from piecewise linear regression analysis |
| title_sort | determination of linear tafel region from piecewise linear regression analysis |
| topic | TA329 Engineering mathematics. Engineering analysis TP250 Industrial electrochemistry |
| url | http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/ http://irep.iium.edu.my/37831/1/2014_IJEM.pdf |