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All Journal Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir
Perdana Immanuel
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KETAHANAN OKSIDASI ZIRCALOY-4 YANG DIPADU DENGAN YTTRIUM PADA TEMPERATUR TINGGI Perdana Immanuel; Pradoto Ambardi; Djoko Hadi Prajitno
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 25 No. 1 (2019): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2019.25.1.4663

Abstract

Yttrium is one of the rare earth metals which is used to improve properties of metals. This study was conducted to determine the effect of Yttrium (Y) on high-temperature oxidation resistance of zirconium alloy 4 by using isothermal oxidation method at temperatures of 900 °C and 1000 °C. This study employs 3 varied yttrium concentration of 0 wt%, 0.5 wt% and 1 wt% as doping material for zircalloy-4 (Zr, Sn, Fe, and Cr). The isothermal oxidation process was conducted at temperatures of 900 °C and 1000 °C for 9 hours heating of samples as cast in a furnace. Tests were done to the samples after oxidation process, which include metallographic testing, hardness testing, X-Ray Diffraction (XRD) testing and oxide thickness measurements. Test results show that the varying content of yttrium does not significantly affect the value of hardness, but there is a tendency that greater yttrium content decreases hardness value. The addition of yttrium affects the oxidation resistance at high temperatures, which can be seen from the graph of oxide thickness as well as the morphology of the oxide surface of each sample.
Co-Authors Djoko Hadi Prajitno Pradoto Ambardi