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Email this article PEMBUATAN KAWAT SUPERKONDUKTOR MULTI-FILAMEN Cu-Nb-Sn DENGAN METODA SERBUK DALAM TABUNG [Production Of Cu-Nb-Sn Multifilamenary Superconductor Wire By Powder-In-Tube Method]
Abstract
Telah dilakukan percobaan pembuatan konduktor Nb3Sn dengan cara PIT (powder-in-tube) untuk aplikasi medan magnet tinggi. Superkonduktor Cu-Nb-Sn adalah salah satu jenis superkonduktor temperatur rendah yang cocok untuk aplikasi pada peralatan MRI (magnetic resonance imaging). Percobaan pembuatan kawat superkonduktor multi-filamen jenis Cu-Nb-Sn ini dilakukan melalui beberapa tahapan proses yaitu: preparasi bahan, proses pemesinan, penarikan kawat, dan proses perlakukan panas. Proses pencampuran serbuk Nb dan Sn dilakukan menggunakan HEM (high energy milling) agar diperoleh campuran yang sempurna. Perlakuan panas terhadap kawat dilakukan pada temperatur 700°C selama96 jam agar serbuk Nb dan serbuk Sn dapat berdifusi satu sama lain membentuk fasa inter-metalik Nb3Sn sehingga kawat menjadi bersifat superkonduktor. Pengamatan mikrostuktur kawat multi-filamen dilakukan terhadap potongan penampang melintang maupun membujur. Pengamatan mikrostruktur dengan SEM (scanning electron microscopy) dan EDS (energy dispersive spectroscopy) dilakukan terhadap kawat hasil perlakuan panas tersebut untuk melihat adanya pembentukkan Nb3Sn di dalam kawat multi-filamen.
Abstract
Experimental process to produce Nb3Sn conductors, based on the powder-in-tube (PIT) method, have been
developed for application high field magnets. Cu-Nb-Sn superconductor is one type of low temperature
superconductor that suitable to be applied for MRI eqiupment. The experiments to produce these multifilamen
superconductor wires were done through some steps such as: sample preparation, machining process,
wire drawing, and heat treatment process. Perfectly mixing of Nb - Sn powder was needed, so the process
was done by using High Energy Mill (HEM). The wires containing Nb-Sn powder was subsequently heat
treated at 700°C in 96 hours for the formation of the superconducting Nb3Sn phase by diffusion reaction of
Nb-Sn powder mixture. Microstructure observation of multi-filamen wires was done through the longitudinal
dan transverse cross section. Microstructure observation was done by using SEM and EDS to observed the
formation of the superconducting Nb3Sn phase inside the multi-filamen wires.
Keywords
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