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The effect of ultrasonic treatment on the oxidation resistance and microstructure of Fe80Cr20 alloy powder at high temperature oxidation process

Feriyanto, Dafit and Idris, Maizlinda Izwana and Sebayang, Darwin (2014) The effect of ultrasonic treatment on the oxidation resistance and microstructure of Fe80Cr20 alloy powder at high temperature oxidation process. In: International Conference on X-Ray & Related Technique in Research and Industry (ICXRI2014), 11-13 August 2014, Johor Bahru, Johor.

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Abstract

Effect of ultrasonic treatment on the oxidation kinetics and microstructure of Fe80Cr20 alloy is investigated. Metallic material has many advantages especially for manufacturing of Solid Oxide Fuel Cell (SOFC) interconnect. The aim of this study is to improve the surface morphology and oxidation resistance of the Fe80Cr20 alloy powder as a raw material. Ultrasonic technique "is very promise technology and not yet fully explored. The FesoCrzo material was treated by ultrasonic technique (UT) at various times of 3.5 h, 4.5 h, 5 h and followed by cold compaction with force of 13 Newton. The oxidation test was carried out using tube hrnace under argon gas environment with 5 cycles, which has been considered. It was found that the UT has improved the surface morphology of the material effectively. The ultrasonic treatments lead to a better consolidation of specimen if compared with a raw material. It was revealed that the good interparticle bonding when experimented with ultrasonic treatment at 4.5 h. In the oxidation test, the lowest mass gain of 68 mg/cm2 was found at the oxidation time of 100 h. Meanwhile, the lowest parabolic rate constant of 6.8198 x 10-l4 g2cm-4s-1 was revealed when ultrasonic for 4.5 h sample.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: oxidation kinetics; Fe80Cr20; microstructure; ultrasonic bath; consolidation
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 07 Apr 2015 04:08
Last Modified: 07 Apr 2015 04:08
URI: http://eprints.uthm.edu.my/id/eprint/5907
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