Proposed SupervisorProfessor Dr. Gul Hameed Awan

Waqar Ul Islam 2011-MS-MME-21

Department of Metallurgical & Materials EngineeringUniversity of Engineering & Technology, Lahore

Contents IntroductionObjectivesMethodologyFacilities & EquipmentUtilization of Research WorkReferences

5052 Aluminium Alloy5052 is an aluminium alloy, is primarily alloyed with magnesium and chromium.It has good work ability, static strength and high fatigue strength.It also has low density and excellent thermal conductivity common to all aluminium alloysIt is commonly used in tube, sheet and plate form.

ApplicationElectrical conductors.Transport.Packaging.Building and architecture.High pressure gas cylinders.Machined component.Road barriers and signs.Sports equipmentMiscellaneous application.

Anodizing Anodizing is the conversion coating of the surface of aluminum and its alloys to porous aluminum oxide.

The process derives its name from the fact that the aluminum part to be coated becomes the anode in an electrolytic cell.

This differentiates it from electroplating, in which the part is made the cathode

CONTD.Anodizing of aluminum can be accomplished in a wide variety of electrolytes, employing varying operating conditions including concentration and composition of the electrolyte, presence of any additive, temperature and voltage.

Properties EnhancedIncrease corrosion resistance.Improve decorative appearance.Increase abrasion resistance.Improve adhesive bonding.Improve lubricity.

Objective

The objective of this research is to study the effect of magnesium on thickness of porous layer and texture of anodized layer at various tempratures

MethodologySelection of a suitable specimen(Al-Mg alloy) preferably AA5052.Specimen will be etched in a solution contain NaOH.For anodizing a thermostatic cell will be used as counter electrode.Anodizing will be carried out in sulphuric acid bath.

CONTD.Temperature of the bath will be varied between 25o and 60o C.Voltage will be kept constant at 15V.DC power supply will be used.After anodizing the specimen will be rinsed with deionized water and dried in cool air stream.Thickness of the oxide film will be measured by eddy current.EDX and SEM will be used to examine the resultant specimen.

Facilities and EquipmentElectrolyte BathElectrolyteAl-Mg foilSEMEDX

Utilization of Research

The research will be helpful to academics and industries like aerospace, automotive and transportation.

Reference

[1] S.Theohar, Ch. Kontogeorgou, Effect of temperature on the anodizing process of aluminum alloy AA5052.[2]ASM metals Handbook Surface Engineering, Volume 5, Page no 1416.[3] S. Wernick, R. Pinner, P.G. Sheasby, Surface Treatment and Finishing of

[4] G.R. Wakefield, R.M. Sharp, Appl. Surf. Sci. 51 (1991) 95.[5] A.C. Crossland, G.E. Thompson, P. Skeldon, G.C. Wood, C.J.E. Smith, H. Habazaki, K. Shimizu, Corros. Sci. 40 (6) (1998) 871.

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