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A microstructure study on the Al2O3-Al and Al-Steel Interfaces for Ceramic-Metal Joints via Friction Welding

Noh, Mohamad Zaky and Hussain, Luay Bakir and Ahmad, Zainal Arifin A microstructure study on the Al2O3-Al and Al-Steel Interfaces for Ceramic-Metal Joints via Friction Welding. In: Proceeding of the International Conference on X-rays and Related Techniques in Research and Industry (ICXRI-2006), 29-30 November 2006, Putrajaya.

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Abstract

The joining of ceramic-metal could be done through a few techniques: brazing, diffusion bonding, friction welding etc. However, the mechanism of ceramic-metal joining was still not properly understood. In this study, alumina rod was bonded to mild steel rod via friction welding technique by using Al 1100 sheet as interlayer. The diameter of the rods was 10 mm. Friction pressure of 20 MPa and forging pressure of 40 MPa were used. Rotational speeds were maintained at 900 rpm and friction times of 2 to 20 seconds were applied. The joining strength was determined through four point bending test. The maximum bending strength, 240 MPa was obtained at the friction times of 20 seconds. Under optical microscope and SEM observation, the deformation of the aluminum interface was clearly obtained. Mechanical interlocking and close contact between the alumina-aluminum and aluminum-mild steel were observed at magnifications of 3000X. The strength of alumina-steel bonding is much dependent on the wettability of the alumina surface by the molten aluminum and the existing of mechanical interlocking between interlayer and sample materials.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: ceramic-metal joining; friction welding; four point bending test; optical microscope and SEM observation; alumina-aluminum and aluminum-steel interfaces
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Applied Science and Technology > Department of Science and Mathematics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 07 Nov 2012 03:35
Last Modified: 07 Nov 2012 03:35
URI: http://eprints.uthm.edu.my/id/eprint/2614
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