Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies

Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies

The effect of scan rate on the accuracy of corrosion parameter in evaluating the efficiency of rice straw extract as corrosion inhibitor has been studied via potentiodynamic polarization measurement. Scan rate in the range of low (0.1-0.25 mV s-1), medium (0.5-1.0 mV s-1) and high (1.5-2.0 mV s-1) s...

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Main Authors: Solhan Yahya, Norinsan Kamil Othman, Abd Razak Daud, Azman Jalar
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2014
Online Access:http://journalarticle.ukm.my/7265/
http://journalarticle.ukm.my/7265/
http://journalarticle.ukm.my/7265/1/16_Solhan_Yahya.pdf
id ukm-7265
recordtype eprints
spelling ukm-72652016-12-14T06:43:34Z http://journalarticle.ukm.my/7265/ Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies Solhan Yahya, Norinsan Kamil Othman, Abd Razak Daud, Azman Jalar, The effect of scan rate on the accuracy of corrosion parameter in evaluating the efficiency of rice straw extract as corrosion inhibitor has been studied via potentiodynamic polarization measurement. Scan rate in the range of low (0.1-0.25 mV s-1), medium (0.5-1.0 mV s-1) and high (1.5-2.0 mV s-1) scan were carried out on the carbon steel in 1 M HCl. The corrosion parameters such as corrosion rate, polarization resistance and corrosion current density have been analyzed through Tafel polarization curve. High scan rate gave poor accuracy of corrosion parameter compared to medium and low scan. Medium scan at 1.0 mV s-1 has been chosen as the optimum scan rate due to the approached steady-state and small disturbance of charged current. As a result, the addition of rice straw extract in 1 M HCl has reduced the values of corrosion current density in both cathodic and anodic reactions signified the corrosion has been inhibited. The efficiency of rice straw extracts as a corrosion inhibitor offer good result as much as 86%. Universiti Kebangsaan Malaysia 2014-07 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7265/1/16_Solhan_Yahya.pdf Solhan Yahya, and Norinsan Kamil Othman, and Abd Razak Daud, and Azman Jalar, (2014) Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies. Sains Malaysiana, 43 (7). pp. 1083-1087. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type Digital Repository
institution_category Local University
institution Universiti Kebangasaan Malaysia
building UKM Institutional Repository
collection Online Access
language English
description The effect of scan rate on the accuracy of corrosion parameter in evaluating the efficiency of rice straw extract as corrosion inhibitor has been studied via potentiodynamic polarization measurement. Scan rate in the range of low (0.1-0.25 mV s-1), medium (0.5-1.0 mV s-1) and high (1.5-2.0 mV s-1) scan were carried out on the carbon steel in 1 M HCl. The corrosion parameters such as corrosion rate, polarization resistance and corrosion current density have been analyzed through Tafel polarization curve. High scan rate gave poor accuracy of corrosion parameter compared to medium and low scan. Medium scan at 1.0 mV s-1 has been chosen as the optimum scan rate due to the approached steady-state and small disturbance of charged current. As a result, the addition of rice straw extract in 1 M HCl has reduced the values of corrosion current density in both cathodic and anodic reactions signified the corrosion has been inhibited. The efficiency of rice straw extracts as a corrosion inhibitor offer good result as much as 86%.
format Article
author Solhan Yahya,
Norinsan Kamil Othman,
Abd Razak Daud,
Azman Jalar,
spellingShingle Solhan Yahya,
Norinsan Kamil Othman,
Abd Razak Daud,
Azman Jalar,
Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
author_facet Solhan Yahya,
Norinsan Kamil Othman,
Abd Razak Daud,
Azman Jalar,
author_sort Solhan Yahya,
title Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
title_short Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
title_full Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
title_fullStr Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
title_full_unstemmed Effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
title_sort effect of scan rate on corrosion inhibition of carbon steel in the presence of rice straw extract - potentiodynamic studies
publisher Universiti Kebangsaan Malaysia
publishDate 2014
url http://journalarticle.ukm.my/7265/
http://journalarticle.ukm.my/7265/
http://journalarticle.ukm.my/7265/1/16_Solhan_Yahya.pdf
first_indexed 2023-09-18T19:49:12Z
last_indexed 2023-09-18T19:49:12Z
_version_ 1777406104906498048

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