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High temperature cathodic protection of Fe-Cr alloy

Power plant industry extensively using ferritic Fe-Cr alloys as boiler materials due to its good resistant to creep, low in thermal shock and thermal expansion. However, the development of new generation of Ultra Supercritical (USC) power plant requires boiler materials to be operate at higher tempe...

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Main Authors:	Ani, Mohd Hanafi, Azman, M. A. F., Musa, Mukhtaruddin, Anhar, Zaki, Abdul Hamid, Abd. Malek
Format:	Conference or Workshop Item
Language:	English English
Published:	IOP Publishing Ltd 2020
Subjects:	T Technology (General) TA Engineering (General). Civil engineering (General) TA401 Materials of engineering and construction
Online Access:	http://irep.iium.edu.my/81931/1/81931-High%20Temperature%20Cathodic%20Protection%20of%20Fe-Cr%20Alloy.pdf http://irep.iium.edu.my/81931/7/81931%20High%20Temperature%20Cathodic%20Protection%20of%20Fe-Cr%20Alloy%20SCOPUS.pdf http://irep.iium.edu.my/81931/ https://iopscience.iop.org/article/10.1088/1757-899X/864/1/012031/pdf
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spelling	my.iium.irep.819312020-10-15T03:12:37Z http://irep.iium.edu.my/81931/ High temperature cathodic protection of Fe-Cr alloy Ani, Mohd Hanafi Azman, M. A. F. Musa, Mukhtaruddin Anhar, Zaki Abdul Hamid, Abd. Malek T Technology (General) TA Engineering (General). Civil engineering (General) TA401 Materials of engineering and construction Power plant industry extensively using ferritic Fe-Cr alloys as boiler materials due to its good resistant to creep, low in thermal shock and thermal expansion. However, the development of new generation of Ultra Supercritical (USC) power plant requires boiler materials to be operate at higher temperature and pressure, thus make it susceptible to high temperature oxidation. The USC power plant successfully reaching the target of working temperature at temperature more than 873K (600°C). By increasing the operating temperature, the efficiency of power plant also increases at the expense of acceleration of high temperature oxidation. This project explored the application of impressed current cathidic protection (ICCP) at 1073 K. At high temperature, gas may dissociates into charged ions that make it possible to conduct electrons. Typical boiler material of T91 was used in high temperature oxidation at 1073K, under Ar-20%O2 mixed gas. The sample is connected to potentiostat with Pt wire to measure the value of corrosion potential (Ecorr), and Icorr. Blank experiment is conducted to determine the presence of reaction by the presence of current conductivity at high temperature in oxygen condition. The weight gain is following parabolic’s rate law, which shows that diffusion is the rate determing step. Blank test shows that as potential induced, current flows from one Pt terminal to another Pt terminal through intermediate mixed gas. Corrosion potential (Ecorr) of the sample show the value is greater than value at room temperature. It is concluded that ICCP is feasible to be conducted for controlling corrosion at high temperature. IOP Publishing Ltd 2020 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/81931/1/81931-High%20Temperature%20Cathodic%20Protection%20of%20Fe-Cr%20Alloy.pdf application/pdf en http://irep.iium.edu.my/81931/7/81931%20High%20Temperature%20Cathodic%20Protection%20of%20Fe-Cr%20Alloy%20SCOPUS.pdf Ani, Mohd Hanafi and Azman, M. A. F. and Musa, Mukhtaruddin and Anhar, Zaki and Abdul Hamid, Abd. Malek (2020) High temperature cathodic protection of Fe-Cr alloy. In: 2nd Joint Conference on Green Engineering Technology & Applied Computing 2020, 4th - 5th Feb. 2020, Bangkok, Thailand.. https://iopscience.iop.org/article/10.1088/1757-899X/864/1/012031/pdf 10.1088/1757-899X/864/1/012031
institution	Universiti Islam Antarabangsa Malaysia
building	IIUM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	International Islamic University Malaysia
content_source	IIUM Repository (IREP)
url_provider	http://irep.iium.edu.my/
language	English English
topic	T Technology (General) TA Engineering (General). Civil engineering (General) TA401 Materials of engineering and construction
spellingShingle	T Technology (General) TA Engineering (General). Civil engineering (General) TA401 Materials of engineering and construction Ani, Mohd Hanafi Azman, M. A. F. Musa, Mukhtaruddin Anhar, Zaki Abdul Hamid, Abd. Malek High temperature cathodic protection of Fe-Cr alloy
description	Power plant industry extensively using ferritic Fe-Cr alloys as boiler materials due to its good resistant to creep, low in thermal shock and thermal expansion. However, the development of new generation of Ultra Supercritical (USC) power plant requires boiler materials to be operate at higher temperature and pressure, thus make it susceptible to high temperature oxidation. The USC power plant successfully reaching the target of working temperature at temperature more than 873K (600°C). By increasing the operating temperature, the efficiency of power plant also increases at the expense of acceleration of high temperature oxidation. This project explored the application of impressed current cathidic protection (ICCP) at 1073 K. At high temperature, gas may dissociates into charged ions that make it possible to conduct electrons. Typical boiler material of T91 was used in high temperature oxidation at 1073K, under Ar-20%O2 mixed gas. The sample is connected to potentiostat with Pt wire to measure the value of corrosion potential (Ecorr), and Icorr. Blank experiment is conducted to determine the presence of reaction by the presence of current conductivity at high temperature in oxygen condition. The weight gain is following parabolic’s rate law, which shows that diffusion is the rate determing step. Blank test shows that as potential induced, current flows from one Pt terminal to another Pt terminal through intermediate mixed gas. Corrosion potential (Ecorr) of the sample show the value is greater than value at room temperature. It is concluded that ICCP is feasible to be conducted for controlling corrosion at high temperature.
format	Conference or Workshop Item
author	Ani, Mohd Hanafi Azman, M. A. F. Musa, Mukhtaruddin Anhar, Zaki Abdul Hamid, Abd. Malek
author_facet	Ani, Mohd Hanafi Azman, M. A. F. Musa, Mukhtaruddin Anhar, Zaki Abdul Hamid, Abd. Malek
author_sort	Ani, Mohd Hanafi
title	High temperature cathodic protection of Fe-Cr alloy
title_short	High temperature cathodic protection of Fe-Cr alloy
title_full	High temperature cathodic protection of Fe-Cr alloy
title_fullStr	High temperature cathodic protection of Fe-Cr alloy
title_full_unstemmed	High temperature cathodic protection of Fe-Cr alloy
title_sort	high temperature cathodic protection of fe-cr alloy
publisher	IOP Publishing Ltd
publishDate	2020
url	http://irep.iium.edu.my/81931/1/81931-High%20Temperature%20Cathodic%20Protection%20of%20Fe-Cr%20Alloy.pdf http://irep.iium.edu.my/81931/7/81931%20High%20Temperature%20Cathodic%20Protection%20of%20Fe-Cr%20Alloy%20SCOPUS.pdf http://irep.iium.edu.my/81931/ https://iopscience.iop.org/article/10.1088/1757-899X/864/1/012031/pdf
_version_	1681489282312699904
score	13.211869

High temperature cathodic protection of Fe-Cr alloy

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