Observation on void formed in oxide scale of Fe-Cr-Ni alloy at 1073K in dry and humid environments
Void formation in oxide scale during high temperature oxidation is a common phenomenon.Over a long period of time voids will affect the mechanical property of scales by influencing the cracking and spalling. Voids formed in dry environment are different than that of formed in humid environment. W...
| Main Authors: | , , , |
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| Format: | Proceeding Paper |
| Language: | English |
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2011
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| Online Access: | http://irep.iium.edu.my/4128/ http://irep.iium.edu.my/4128/1/Observation_on_Void_Formed_in_Oxide_Scale_of_Fe-Cr-Ni_Alloy_at_1073_K_in_Dry_and_Humid_Environments.pdf |
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| author | Akhbar, Kaderi Ani, Mohd Hanafi Othman, Raihan Mohd Zainal, Ahmad Zaki |
| author_facet | Akhbar, Kaderi Ani, Mohd Hanafi Othman, Raihan Mohd Zainal, Ahmad Zaki |
| author_sort | Akhbar, Kaderi |
| building | IIUM Repository |
| collection | Online Access |
| description | Void formation in oxide scale during high temperature oxidation is a common phenomenon.Over a long period of time voids will affect the mechanical property of scales by influencing the cracking and spalling. Voids formed in dry environment are different than that of formed in
humid environment. With the presence of water vapor in humid environment the formation of void will increase, thus greater number of void compared to that in dry environment. Fe-Cr-Ni alloy samples were exposed isothermally at 1073 K in air ((POO2=0.21atm = 2.1 × 10
5 Pa) and humid (air + steam) environments. XRD analysis done to all samples confirms that Fe2O3, Fe3O4, NiCr2O4, FeCr2O4, Cr2O3 and NiO phases exist in the scale. EDX analysis done shows varying compositions of Fe,Cr,Ni and O in outer and inner oxide scale, oxide scale/metal
interface and metal. Field emission scanning electron microscope (FE-SEM) was used to
investigate voids formed in the cross sections of the oxidized samples. Volume fraction of voids
in the oxide scale was calculated in accordance to the cross sectional area fraction of voids in the scale. It shows that Fe-Cr-Ni alloy samples exposed in humid environment has as high as 71% more voids than that exposed in dry environment. It is concluded that the humid environment increased the number of void formed in the oxide scale, thus facilitates the exfoliation of protective scale during the oxidation. |
| first_indexed | 2025-11-14T14:27:33Z |
| format | Proceeding Paper |
| id | iium-4128 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T14:27:33Z |
| publishDate | 2011 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-41282011-11-21T03:24:27Z http://irep.iium.edu.my/4128/ Observation on void formed in oxide scale of Fe-Cr-Ni alloy at 1073K in dry and humid environments Akhbar, Kaderi Ani, Mohd Hanafi Othman, Raihan Mohd Zainal, Ahmad Zaki TA401 Materials of engineering and construction Void formation in oxide scale during high temperature oxidation is a common phenomenon.Over a long period of time voids will affect the mechanical property of scales by influencing the cracking and spalling. Voids formed in dry environment are different than that of formed in humid environment. With the presence of water vapor in humid environment the formation of void will increase, thus greater number of void compared to that in dry environment. Fe-Cr-Ni alloy samples were exposed isothermally at 1073 K in air ((POO2=0.21atm = 2.1 × 10 5 Pa) and humid (air + steam) environments. XRD analysis done to all samples confirms that Fe2O3, Fe3O4, NiCr2O4, FeCr2O4, Cr2O3 and NiO phases exist in the scale. EDX analysis done shows varying compositions of Fe,Cr,Ni and O in outer and inner oxide scale, oxide scale/metal interface and metal. Field emission scanning electron microscope (FE-SEM) was used to investigate voids formed in the cross sections of the oxidized samples. Volume fraction of voids in the oxide scale was calculated in accordance to the cross sectional area fraction of voids in the scale. It shows that Fe-Cr-Ni alloy samples exposed in humid environment has as high as 71% more voids than that exposed in dry environment. It is concluded that the humid environment increased the number of void formed in the oxide scale, thus facilitates the exfoliation of protective scale during the oxidation. 2011-06 Proceeding Paper NonPeerReviewed application/pdf en http://irep.iium.edu.my/4128/1/Observation_on_Void_Formed_in_Oxide_Scale_of_Fe-Cr-Ni_Alloy_at_1073_K_in_Dry_and_Humid_Environments.pdf Akhbar, Kaderi and Ani, Mohd Hanafi and Othman, Raihan and Mohd Zainal, Ahmad Zaki (2011) Observation on void formed in oxide scale of Fe-Cr-Ni alloy at 1073K in dry and humid environments. In: 2nd International Conference on Mechanical and Manufacturing Engineering 2011 (ICME 2011), 6-7th June 2011, Perbadanan Putrajaya Complex, Putrajaya. (Unpublished) http://ucitv.uthm.edu.my/ucitveos53/Viewer/?peid=a705eae1-7b99-4dd3-8f15-57829cd17a24 |
| spellingShingle | TA401 Materials of engineering and construction Akhbar, Kaderi Ani, Mohd Hanafi Othman, Raihan Mohd Zainal, Ahmad Zaki Observation on void formed in oxide scale of Fe-Cr-Ni alloy at 1073K in dry and humid environments |
| title | Observation on void formed in oxide scale of Fe-Cr-Ni alloy
at 1073K in dry and humid environments |
| title_full | Observation on void formed in oxide scale of Fe-Cr-Ni alloy
at 1073K in dry and humid environments |
| title_fullStr | Observation on void formed in oxide scale of Fe-Cr-Ni alloy
at 1073K in dry and humid environments |
| title_full_unstemmed | Observation on void formed in oxide scale of Fe-Cr-Ni alloy
at 1073K in dry and humid environments |
| title_short | Observation on void formed in oxide scale of Fe-Cr-Ni alloy
at 1073K in dry and humid environments |
| title_sort | observation on void formed in oxide scale of fe-cr-ni alloy
at 1073k in dry and humid environments |
| topic | TA401 Materials of engineering and construction |
| url | http://irep.iium.edu.my/4128/ http://irep.iium.edu.my/4128/ http://irep.iium.edu.my/4128/1/Observation_on_Void_Formed_in_Oxide_Scale_of_Fe-Cr-Ni_Alloy_at_1073_K_in_Dry_and_Humid_Environments.pdf |