Ardy Mahendra, Brillian (2022) Studi Pengembangan Bahan Magnesium Diborida dengan Penambahan Graphene Oxide melalui Proses Powder in Stainless Steel Tube dan Cold Rolling terhadap Karakterisasi Pembentukan Fasa, Morfologi, dan Superkonduktivitas. S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.
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Abstract
Magnesium Diboride is a high potential superconducting material that can be applied quite practically. Material development is carried out by adding carbon, namely Graphene Oxide which is a single atom layered material. The Powder in Tube method is practically used to reduce oxidation at a cheaper price. The manufacturing process is carried out in a 1:2 ratio where 98% purity Mg is mixed with Boron, then 0, 0.3 and 3%wt Graphene Oxide is added, all ingredients are weighed stoichiometrically. The material is sintered at a temperature of 800℃ for 2 hours which is then carried out by a cold rolling process. The XRD results show the formation of the dominant MgB2 phase and the formation of an impurity phase in the form of MgO and the largest crystal size is 463 which is owned by the MgB2 Wire sample without doping and 3%wt GO, for the smallest crystal size it is 295 which is owned by the MgB2 PIST 3 sample. %wt GO. SEM test showed the surface morphology in the form of lumps (agglomeration) in each sample, with the presence of several shafts. Cryogenic testing showed that the MgB2 PIST sample without doping had the highest critical temperature value which had a TcOnset value of 40 K and a TcZero value of 38.7 K.
| Item Type: | Thesis (S1) | |||||||||||||||
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| Additional Information: | Magnesium Diborida adalah material superkonduktor berpotensi tinggi yang dapat diaplikasikan dengan cukup praktis. Pengembangan material dilakukan dengan penambahan karbon, yaitu Graphene Oxide yang merupakan bahan berlapis atom tunggal. Metode Powder in Tube praktis digunakan dapat mengurangi oksidasi dengan harga yang lebih murah. Proses manufaktur dilakukan dengan perbandingan 1:2 dimana bahan Mg dengan kemurnian 98% dicampur dengan Boron, yang kemudian ditambahkan doping Graphene Oxide seberat 0, 0,3 dan 3%wt, semua bahan ditimbang secara stoikiometri. Material disinter dengan suhu 800℃ selama 2 jam yang kemudian dilakukan proses pengerollan dingin. Hasil XRD menunjukkan terbentuknya fasa MgB2 yang dominan dan terbentuknya fasa pengotor berupa MgO serta didapatkan ukuran kristal terbesar bernilai 463 Å yang dimiliki oleh sampel MgB2 Wire tanpa doping dan 3%wt GO, untuk ukuran kristal terkecil bernilai 295 Å yang dimiliki oleh sampel MgB2 PIST 3%wt GO. Pengujian SEM menunjukkan morfologi permukaan berbentuk gumpalan (aglomerasi) pada setiap sampel, dengan adanya beberapa poros. Pengujian Cryogenic menunjukkan bahwa sampel MgB2 PIST tanpa doping memiliki nilai suhu kritis paling tinggi dimana memiliki nilai TcOnset sebesar 40 K dan TcZero sebesar 38,7 K. | |||||||||||||||
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 21201-Jurusan Teknik Mesin |
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| Depositing User: | Mr Brilian Ardy Mahendra | |||||||||||||||
| Date Deposited: | 15 Nov 2022 13:49 | |||||||||||||||
| Last Modified: | 09 Dec 2022 11:34 | |||||||||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/17311 |
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