The effect of ultrasonic treatment on the oxidation resistance and microstructure of Fe80Cr20 alloy powder at high temperature oxidation process
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 res...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5907/ http://eprints.uthm.edu.my/5907/1/The_Effect_of_Ultrasonic_Treatment_on_the_Oxidation_X.pdf |
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| Summary: | 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. |
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