Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel

Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel

The aim of this work is to determine the effect of pH, temperature and chloride concentrations on the corrosion behavior of welded 316L stainless steel. An electrochemical, immersion and salt spray tests were employed. Corrosion behavior of welded 316L stainless steel in acidic and alkaline solution...

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Main Author: Ramlee, Norlaila
Format: Thesis
Language:English
Published: 2008
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/9637/1/NorlailaRamleeMFKM2008.pdf
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spelling my-utm-ep.96372018-07-19T01:53:13Z Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel 2008-11 Ramlee, Norlaila TJ Mechanical engineering and machinery The aim of this work is to determine the effect of pH, temperature and chloride concentrations on the corrosion behavior of welded 316L stainless steel. An electrochemical, immersion and salt spray tests were employed. Corrosion behavior of welded 316L stainless steel in acidic and alkaline solutions at different concentrations and temperatures was investigated. The results showed that the weld metal (WM) zone was the most critical zone for pitting corrosion in alkaline (pH=7.64) and acidic (pH=I.83) conditions at temperature of 50°C. The results correlated well to the microstructural features of the metal studied. While, in the immersion test the results indicated that the highest corrosion rate was observed in stainless steel sample tested in 10% FeCh at 50°C for both 72 and 144 hours (40.6453 mm/yr and 40.8592 mm/yr). It was also found that the salt spray test had no considerable effect on the weldment of 316L SS probably due to the limited time of testing. Field Emission Scanning Electron Microscopy (FESEM) and Optical Microscopy (OM) were used to examine the microstructure features of the tested samples in order to determine the extent of corrosion attack and type of corrosion. 2008-11 Thesis http://eprints.utm.my/id/eprint/9637/ http://eprints.utm.my/id/eprint/9637/1/NorlailaRamleeMFKM2008.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Ramlee, Norlaila
Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel
description The aim of this work is to determine the effect of pH, temperature and chloride concentrations on the corrosion behavior of welded 316L stainless steel. An electrochemical, immersion and salt spray tests were employed. Corrosion behavior of welded 316L stainless steel in acidic and alkaline solutions at different concentrations and temperatures was investigated. The results showed that the weld metal (WM) zone was the most critical zone for pitting corrosion in alkaline (pH=7.64) and acidic (pH=I.83) conditions at temperature of 50°C. The results correlated well to the microstructural features of the metal studied. While, in the immersion test the results indicated that the highest corrosion rate was observed in stainless steel sample tested in 10% FeCh at 50°C for both 72 and 144 hours (40.6453 mm/yr and 40.8592 mm/yr). It was also found that the salt spray test had no considerable effect on the weldment of 316L SS probably due to the limited time of testing. Field Emission Scanning Electron Microscopy (FESEM) and Optical Microscopy (OM) were used to examine the microstructure features of the tested samples in order to determine the extent of corrosion attack and type of corrosion.
format Thesis
qualification_level Master's degree
author Ramlee, Norlaila
author_facet Ramlee, Norlaila
author_sort Ramlee, Norlaila
title Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel
title_short Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel
title_full Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel
title_fullStr Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel
title_full_unstemmed Effect of pH, temperature and chloride concentrations on the corrosion behaviour of welded 316L stainless steel
title_sort effect of ph, temperature and chloride concentrations on the corrosion behaviour of welded 316l stainless steel
granting_institution Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department Faculty of Mechanical Engineering
publishDate 2008
url http://eprints.utm.my/id/eprint/9637/1/NorlailaRamleeMFKM2008.pdf
_version_ 1747814767813197824

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