A Study Of Corrosion Behaviour Of Aircraft Components Material : Anodized Aluminium 2024-T3
This report presents a study on corrosion behaviour of aircraft components' material: anodized aluminium 2024-T3. Aluminium 2024-T3 is an aircraft material with high damage tolerance and it is normally used for aircraft fuselage and wings structure. However, the natural of Al 2024-T3 is very...
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| Format: | Monograph |
| Published: |
UTeM
2008
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| Online Access: | http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000048651 http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000048651 http://eprints.utem.edu.my/3300/1/A_Study_On_Corrosion_Behaviour_Of_Aircraft_Component_Material_-__Anodized_Aluminium_2024-TC3_Chang_Hin_Fuat_TA480.A6.C46_2008_-_24_Pages.pdf http://eprints.utem.edu.my/3300/2/A_Study_On_Corrosion_Behaviour_Of_Aircraft_Component_Material_-__Anodized_Aluminium_2024-TC3_Chang_Hin_Fuat_TA480.A6.C46_2008.pdf |
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| Summary: | This report presents a study on corrosion behaviour of aircraft components'
material: anodized aluminium 2024-T3. Aluminium 2024-T3 is an aircraft material
with high damage tolerance and it is normally used for aircraft fuselage and wings
structure. However, the natural of Al 2024-T3 is very susceptible to many types of
localized corrosion such as pitting corrosion, crevice corrosion and intergranular
corrosion. Anodizing process is .a process where the bulk metal is corroded purposely
using oxidizer to construct a protection layer that can prevent corrosion. In this study,
the anodized aluminium 2024-T3 is prepared using chromic acid anodizing and
hardcoat anodizing under controlled solution's temperature, concentration, times and
current. Later, the prepared samples were studies using anodic polarization curve,
Tafel plot (corrosion rate) and morphology analysis. Data such as critical corrosion
potential of anodized Al 2024-T3 with their passivity can'be obtained and it is useful
to characterize the corrosion behaviour the specimen. Meanwhile, the Tafel slope
that been generated experimentally can used to calculate the corrosion rate of
specimen. Lastly, through the SEM, the morphology of the corroded specimen is
observed to determine what types of corrosion might be responsible for the
deterioration of anodized Al 2024-T3. The result of this study had shown pitting
corrosion and uniform corrosion on the specimens. This is further characterized with
some metastable pitting and micropitting that commonly found in aluminium pitting
process. As the C1- ion concentration increase, the specimens' Em, and Ebd had
become more negative and more susceptible to corrosion. As conclusion, the Al
2024-T3 is very susceptible to pitting corrosion and it become more critical when the
C1- ion in the environment increased. With anodizing process, the Al 2024-T3
aircraft components can increase its corrosion resistance and extend the service life
of aircraft components about 25 years minimum. |
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