Sintesis dan Karakterisasi Superkonduktor Magnesium Diboride (MgB2) dengan Penambahan Carbon Nanotubes (CNTs) dan Stannum (Sn)

Farhanudin, Muhammad Nur (2019) Sintesis dan Karakterisasi Superkonduktor Magnesium Diboride (MgB2) dengan Penambahan Carbon Nanotubes (CNTs) dan Stannum (Sn). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini mempelajari mengenai sintesis dan karakterisasi superkonduktor Magnesium Diboride (MgB2) dengan penambahan Carbon Nanotubes (CNTs) dan Stannum (Sn). Penelitian dilakukan dengan proses reaksi padat menggunakan bahan baku serbuk Magnesium (Mg), Boron (B), Stannum (Sn) dan Multi Walled Carbon Nanotubes (MWCNTs). Sintesis dilakukan melalui 2 metode, yang pertama adalah metode vakum dengan sampel kode A. Metode ini diawali dengan penimbangan bahan baku dimana perbandingan Mg:B:Sn:CNT adalah 0,518:0,462:0,01:0,01 (A1); 0,513:0,457:0,01:0,02 (A2) dan 0,497:0,443:0,01:0,05 (A3). Kemudian dilanjutkan dengan penggerusan menggunakan agate mortar selama 3 jam untuk masing-masing sampel. Serbuk hasil penggerusan dicetak menjadi pelet menggunakan mesin press kompaksi dengan besar tekanan sebesar 350 MPa. Sampel yang didapat selanjutnya dipanaskan di dalam furnace pada suhu 800 0C selama 2 jam dengan kondisi vakum, lalu dikarakterisasi. Sedangkan metode kedua, yaitu Powder In Sealed Tube (PIST) dengan sampel kode B. Dalam metode ini, langkah yang dilakukan hampir sama dengan metode vakum, hanya saja sebelum preparasi sampel, dilakukan preparasi Tabung SS316 terlebih dahulu. Setelah sintesis, semua sampel ini kemudian dikarakterisasi dengan X-Ray Diffraction (XRD), dimana terlihat fase dominannya adalah MgB2, dengan fase-fase impuritas kecil seperti MgO; Mg; Mg2Sn; C dan Sn. Analisis morfologi melalui SEM menunjukkan batas butir-butir sampel A1 lebih jelas dibandingkan pada sampel B2. Ukuran butir pada kedua sampel masih bervariasi dan penyebaran unsurnya belum merata. Pengujian Cryogenic Magnet menunjukkan sebagian besar sampel menunjukkan karakteristik superkonduktor pada temperatur 40 K.
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This study investigates the synthesis and characterization of Magnesium Diboride (MgB2) superconductors with the addition of Carbon Nanotubes (CNTs) and Stannum (Sn). The research was carried out via a solid-state reaction process using raw materials of Magnesium (Mg), Boron (B), Stannum (Sn), and Multi-Walled Carbon Nanotubes (MWCNTs) powders. The synthesis was performed through two methods; the first was the vacuum method with code A samples. This method began with weighing the raw materials with Mg:B:Sn:CNT ratios of 0.518:0.462:0.01:0.01 (A1); 0.513:0.457:0.01:0.02 (A2); and 0.497:0.443:0.01:0.05 (A3). This was followed by grinding using an agate mortar for 3 hours for each sample. The ground powder was pressed into pellets using a compaction press machine at a pressure of 350 MPa. The resulting samples were then heated in a furnace at 800 °C for 2 hours under vacuum conditions, followed by characterization. The second method was the Powder In Sealed Tube (PIST) method with code B samples. In this method, the steps were nearly identical to the vacuum method, except that prior to sample preparation, the SS316 tube preparation was performed first. After synthesis, all samples were characterized by X-Ray Diffraction (XRD), which revealed that the dominant phase was MgB2, along with minor impurity phases such as MgO, Mg, Mg2Sn, C, and Sn. Morphological analysis via SEM showed that the grain boundaries of sample A1 were clearer compared to sample B2. The grain sizes in both samples still varied, and the elemental distribution was not uniform. Cryogenic Magnet testing demonstrated that most samples exhibited superconducting characteristics at a temperature of 40 K.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Carbon Nanotubes, Magnesium Diboride, Superkonduktor, Temperatur kritis
Subjects:	Q Science > Q Science (General) Q Science > QC Physics Q Science > QC Physics > QC271 Temperature measurements
Divisions:	Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Nur Farhanudin
Date Deposited:	20 Jul 2026 03:29
Last Modified:	20 Jul 2026 03:29
URI:	http://repository.its.ac.id/id/eprint/66121

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