Ketahanan Oksidasi Zirkaloy-4 yang Dipadu dengan Yttrium Pada Suhu Tinggi

Immanuel, Perdana; Ambardi, Pradoto; Prajitno, Djoko Hadi

doi:10.17146/urania.2019.25.1.4663

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The microstructure in basketweave-shaped Zr-10Mo, Zr-10Mo-1Nb, Zr-10Mo-3Nb and Zr-10Mo-5Nb alloys contain black dendritic α-Zr phase in the white [14,16] and Mo2Zr intermetallic compound in the α-Zr phase [17]. α-Zr phase is black dendritic at the β-Zr grain boundary, α-Zr phase that grows from a number of different nucleation areas in β-Zr grain area where the form of those plates intersect and do not have time to extent forming the basketweave structure, this is because the insoluble Niobium element in β-Zr phase serves as the nucleation site of α-Zr phase during the colling time with the final basketweave structure [16]. In the Zr-10Mo-xNb alloy (x= 1%, 3% and 5%), the transformation mechanism of β-Zr phase into α-Zr phase + Mo2Zr intermetallic compound starts from the early cooling stage from the melting of Zirconium alloy into β-Zr phase, the next stage is the α-Zr nuclei grow and are trapped in the β-Zr grain and Mo2Zr intermetallic compound grows in the α-Zr phase.…”

Section: Resultsmentioning

confidence: 99%

CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER’S SOLUTION

Prastika

Ambardi

Prajitno

2019

jsmi

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CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER'S SOLUTION. This research discusses the corrosion behavior of Zr-10Mo alloys in Niobium-doped lactate ringer's solution. The addition of Niobium of 1%, 3% and 5% on Zr-10Mo alloys aims to study the effect of adding Niobium to the hardness, microstructure and corrosion resistance of Zr-Mo alloys. The alloys are made by melting the materials of Zr, Mo and Nb with a certain percentage of weight using single arc melting furnace in Argon atmosphere with high purity and Tungsten eletrodes. The alloys (as cast) are subjected to hardness testing using C-scale rockwell, microstructure using optical microscopy, compounds and phases in the alloys (as cast) using XRD and corrosion testing using polarization method in lactate ringers' solution. The hardness value increases by the addition of Niobium, Zr-10Mo-1Nb alloy of 34 HRC, Zr-10Mo-3Nb alloy of 38 HRC and Zr-10Mo-5Nb alloy of 41.5 HRC. The basketweave-shaped microstructure with the addition of Niobium creates relatively smaller grain size. The value of corrosion rate decrases by the addition of Niobium at the immersion times of 0 minute, 60 minutes and 120 minutes, Zr-10Mo-1Nb alloy of 4.208 mpy, Zr-10Mo-3Nb alloy of 3.538 mpy and Zr-10Mo-5Nb alloy of 2.813 mpy, included in the excellent category (1-5 mpy).

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Section: Resultsmentioning

confidence: 99%

CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER’S SOLUTION

Prastika

Ambardi

Prajitno

2019

jsmi

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“…Pada penelitian sebelumnya, yttrium telah terbukti dapat meningkatkan ketahanan paduan zircaloy terhadap oksidasi [6]. Penggunaan zircaloy dalam waktu yang lama akan rentan terhadap penggetasan oleh hidrogen [7].…”

Section: Pendahuluanunclassified

STUDI PENGARUH PENAMBAHAN YTTRIUM DAN PERLAKUAN PANAS BETA TERHADAP KETAHANAN HIDROGEN PADUAN ZIRCALOY-4-0,1%Mo PADA TEMPERATUR 600°C DAN 800°C

Alfatar

Basuki

Prajitno

2022

urania

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STUDI PENGARUH PENAMBAHAN YTTRIUM DAN PERLAKUAN PANAS BETA TERHADAP KETAHANAN HIDROGEN PADUAN ZIRCALOY-4-0,1%Mo PADA TEMPERATUR 600°C DAN 800°C. Energi listrik merupakan sumber energi yang banyak digunakan dan dibutuhkan oleh manusia. Sehingga kebutuhan energi listrik ini akan meningkat seiring bertambahnya jumlah populasi manusia. Pembangkit Listrik Tenaga Nuklir (PLTN) merupakan salah satu solusi dari persoalan tersebut. Salah satu komponen penting reaktor nuklir yaitu kelongsong bakar nuklir biasanya menggunakan material berupa paduan zirkonium, namun penggunaan paduan ini dalam waktu yang lama akan rentan terhadap penggetasan akibat penetrasi hidrogen. Serangkaian percobaan dilakukan untuk mengetahui pengaruh penambahan yttrium dan perlakuan panas beta terhadap ketahanan hidrogen dan sifat mekanis paduan Zircaloy-4-0,1%Mo-xY (x=0 wt%; 0,5 wt%; 1 wt%). Penambahan yttrium menyebabkan peningkatan jumlah presipitat yang diduga adalah α-Y sekaligus meningkatkan kekerasan paduan baik pada paduan as cast maupun perlakuan panas beta. Perlakuan panas beta menurunkan kekerasan paduan akibat peningkatan jumlah fasa β-Zr. Peningkatan ketahanan hidrogen dapat dilakukan dengan penambahan yttrium karena bertindak sebagai penstabil fasa β-Zr. Sama halnya dengan perlakuan panas beta yang dapat meningkatkan ketahanan hidrogen dengan metode yang sama yaitu meningkatkan jumlah fasa β-Zr sehingga jumlah hidrogen yang dapat larut meningkat. Penambahan 1 wt% Y pada paduan zircaloy-4-0.1%Mo dengan perlakuan panas beta menunjukkan ketahanan hidrogen yang paling baik dengan ketebalan 6,24 μm pada temperatur 600°C dan 545,5 μm pada temperatur 800°C.Kata kunci: Zircaloy-4, ketahanan hidrogen, variasi yttrium

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Ketahanan Oksidasi Zirkaloy-4 yang Dipadu dengan Yttrium Pada Suhu Tinggi

Cited by 2 publications

References 11 publications

CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER’S SOLUTION

CORROSION BEHAVIOR OF Zr-10Mo ALLOYS IN NIOBIUM-DOPED LACTATE RINGER’S SOLUTION

STUDI PENGARUH PENAMBAHAN YTTRIUM DAN PERLAKUAN PANAS BETA TERHADAP KETAHANAN HIDROGEN PADUAN ZIRCALOY-4-0,1%Mo PADA TEMPERATUR 600°C DAN 800°C

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