Effect of Rapidly Annealing Process on MgB2 Superconducting Wires

Abstract

The present study has reported the effect of rapidly annealing and cooling process on the transport and morphological properties of Fe/MgB2 wires. Transport properties like critical transition temperature, transition width and engineering critical current density of the obtained wires at different annealing and durations were determined for superconducting wires. The results show that the annealing temperature is more dominant to accelerate the reaction rate of Mg and B in the wires in comparison with annealing duration. Among the studied wires, a highest Jc (T = 36K) value >150 A/cm 2 was achieved for the wires at 900 o C and 1000 o C for small durations (15 minutes). In the study, it was investigated whether fast annealing and cooling is a possible candidate to fabricate fast the requested superconducting MgB2 long length wires for coils by React&Wind method in continuous system or not.

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

“…al mengembangkan potensi besar dengan mensintesis magnesium dan boron dalam bentuk bulk [2]- [3]. Keunggulan dari MgB2 yaitu ketersediaan bahan baku yang cenderung murah, struktur kristal sederhana, tinggi kepadatan dan sampai saat ini MgB2 akan menjadi material yang berpotensi kuat pada bidang aplikasi kesehatan dan perangkat elektronik [4]- [5]. MgB2 dapat dimanufaktur menjadi beberapa bentuk seperti contohnya tape, lapisan tipis dan kawat, selain itu proses manufaktur MgB2 tergolong mudah dan membutuhkan sedikit biaya dibandingkan material superkonduktor lain [6].…”