Fabrication of MgB2 monofilament wire by in-situ using powder-in-tube (PIT) method

Rasyadi, Muhammad Emir Hanif; Yudanto, Sigit Dwi; Imaduddin, Agung; Sawitri, Dyah

doi:10.1063/1.5030252

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Penelitian ini menggunakan metode powder in tube in-situ dimana serbuk MgB2 dimasukkan ke dalam selubung baja sebagai media pembentukan kawat sebelum proses sintering. Metode powder in tube in-situ dipilih berdasarkan faktor efisien dan lebih ekonomis dengan hasil yang menunjukkan sifat superkonduktivitas dan sifat mekanik yang baik [10].Pada penelitian ini fabrikasi lanjut pada material MgB2 dilakukan menggunakan tabung baja tahan karat sebagai bahan selubung yang lebih optimal karena tidak bereaksi ketika dipanaskan dan menghasilkan fasa MgB2 yang lebih baik serta memiliki keunggulan lain yaitu biaya yang murah dan kemampuan deformasi yang baik serta dapat dilakukan perlakuan panas [11]- [12]. Proses pembentukan kawat selanjutnya dilakukan dengan proses rolling merupakan proses deformasi plastis yang merupakan metode pembentukan sederhana yang dapat meningkatkan sifat mekanik material namun menurunkan keuletan [13].…”

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Fabrikasi Kawat Resistansi Nol Berbahan MgB2/Stainless Steel dengan Variasi Reduksi Ukuran melalui Pengerolan Dingin terhadap Karakteristik Mekanik dan Struktur Mikro

Herbirowo¹,

Pramono²

2021

energi

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Magnesium Diboride (MgB2) is a high potential material for medical and electrical applications with zero resistance and high efficiency. The raw materials of Mg powder with a purity of 98% and B amorphous with a purity of 95%, were mixed with a ratio of 1:2, ground for 2 hours using an agate mortar, and subsequently compacted and inserted into stainelss steel (SS) tube by powder-in-tube (PIT). The SS tube was previously annealed at 900°C for 1 hour. The sintering process was carried out using a muffle furnace at a temperature of 800°C for 1 hour, followed by cold wire rolling with gradual reduction. The samples were characterized for their mechanical properties using Vickers microhardness tester and ultimate tensile test machine. Surface morphologies of samples were observed using optical microscope and SEM-EDAX Superconducting properties were measured with the cryogenic resistance measurement. The highest hardness value of 377,2 HV was achieved at a 60% size reduction along with the tensile strength of 1381 KN/mm. The results of the morphological observation showed homogeneous deformation without any cracks, with the the grain shape tended to be crystalline. The superconductivity test showed the phenomenon of zero resistance at a critical temperature of 39.55K at a 40% reduction in MgB2 wire

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Section: Pendahuluanunclassified

Fabrikasi Kawat Resistansi Nol Berbahan MgB2/Stainless Steel dengan Variasi Reduksi Ukuran melalui Pengerolan Dingin terhadap Karakteristik Mekanik dan Struktur Mikro

Herbirowo¹,

Pramono²

2021

energi

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“…This is expected to occur due to differences in sintering time. In this study, sintering at 800°C was carried out for 3 hours, whereas in the previous work, the sintering was carried out for only 2 hours[11]. In fact, in a study by Yao et.al., sintering MgB 2 was carried out in just a few minutes to get a high current density value[12].…”

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The Doping Effects of SiC and Carbon Nanotubes on the Manufacture of Superconducting Monofilament MgB<sub>2</sub> Wires

Imaduddin

Samsulludin

Wicaksono

et al. 2019

MSF

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MgB2 superconductor is a superconductor with a critical temperature of around 39K and has the potential to replace Nb3Sn and NbTi as superconducting coils to produce high magnetic fields. In this study, monofilament wires have been made to analyze the doping effect of SiC and Carbon Nanotubes (CNT) in its manufacture using Powder-In-Tube (PIT) method. Stainless Steel (SS-316) tube was used as a tube filled with powders of starting materials of Mg, B, SiC and CNT. A total of 8 samples were prepared with variations in the addition of SiC, and CNT as much as 5, 10, and 15 wt %, and also the variations in the addition of Mg composition by 0 and 10 mol % from normal stoichiometric values. The samples were rolled and sintered at 800°C for 3 hours. The samples then were analyzed using SEM (Scanning Electron Microscopy) to analyze the surface morphology, XRD (X-Ray Diffractometer) to analyze the formed phases and crystal structures, and then resistivity versus temperature using cryogenic systems to analyze their superconductivity properties. Based on the results of the XRD analysis, the MgB2 phase is the major phase in the samples and the SiC doping causes the formation of minor phases of Mg2Si and Fe3C. The addition of SiC causes a decrease in crystalline properties of the MgB2 phase due to reaction with SiC, while the addition of CNT does not cause the formation of a new phase. Based on the results of the analysis of resistance versus temperature, it is seen that the addition of SiC causes a decrease in TC value. While the addition of CNT causes the improvement in the nature of superconductivity, but it also causes the decrease of its TC values.

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Carbon and graphite addition effect on the crystal structure formation and grain size of MgB2 material

Martides,

Lusiana,

Yudanto

et al. 2024

5TH INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2022): Strengthening Research and Innovation in Metallurgy and Mater

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Fabrication of MgB2 monofilament wire by in-situ using powder-in-tube (PIT) method

Cited by 3 publications

References 9 publications

Fabrikasi Kawat Resistansi Nol Berbahan MgB2/Stainless Steel dengan Variasi Reduksi Ukuran melalui Pengerolan Dingin terhadap Karakteristik Mekanik dan Struktur Mikro

Fabrikasi Kawat Resistansi Nol Berbahan MgB2/Stainless Steel dengan Variasi Reduksi Ukuran melalui Pengerolan Dingin terhadap Karakteristik Mekanik dan Struktur Mikro

The Doping Effects of SiC and Carbon Nanotubes on the Manufacture of Superconducting Monofilament MgB<sub>2</sub> Wires

Carbon and graphite addition effect on the crystal structure formation and grain size of MgB2 material

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