Micro-indentation study of Mg-addition MgB2 superconducting wires

Güçlü, N.

doi:10.1016/j.jallcom.2010.09.178

Cited by 11 publications

(2 citation statements)

References 31 publications

(28 reference statements)

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“…Faktor yang penting dalam pembentukan kawat MgB 2 adalah rasio dari area cross-sectional material inti terhadap area cross-sectional pembungkus karena dapat mempengaruhi kapasitan arus dan densifikasi material inti [14]. Fraksi komposisi dari Mg dan B pada kawat MgB2 sangat penting untuk mencapai kerapatan arus kritis yang tinggi [15]. Berdasarkan penelitian sebelumnya, banyak dilakukan variasi rasio Mg dan penentuan suhu sinter optimal sekitar 750-850°C, dan masih ada kekurangan dalam pembentukan fase oksida dan fasa lain bersama dengan fase MgB2 yang dapat mempengaruhi tingkat kepadatan serbuk dalam kawat [16].…”

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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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