Pengaruh Variasi Komposisi Dalam Pembuatan Magnet Permanen Dengan Bahan Dasar Pasir Besi Lumajang

Zulkifly, Akhmad (2008) Pengaruh Variasi Komposisi Dalam Pembuatan Magnet Permanen Dengan Bahan Dasar Pasir Besi Lumajang. Other thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Dalam Tugas Akhir ini, telah dilakukan pembuatan magnet permanen dengan bahan dasar bijih besi yang diekstraksi dari pasir besic Lumajang ,Sebagai bahan aditif untuk membentuk BaFe120 19 digunakan Barium Carbonate (BaC03) dengan komposisi yang divariasi, yakni 5% , 10%, 15%, 16.67%, dan 19%. Proses pembuatan magnet dilakukan dengan teknologi bahan serbuk, ukuran serbuk yang dipakai adalah 400 mesh. Pencetakan dilakukan dengan tekana 294 Mpa, suhu kalsinasi 1000 °C, dan suhu sintering 1100 °C, waktu penahanan 45 menit dengan pendinginan udara. Sampel magnet diukur induksi remanennya dengan Gaussmeter sebelum dan setelah magnetisasi. Dilakukan juga pengujian densitas sampel magnet. Hasil yang diperoleh menunjukkan bahwa nilai induksi remanen dan densitas memiliki pol a yang sama terhadap variasi komposisi, yakni meningkat hingga komposisi aditif 10%, kemudian turun dan meningkat lagi pada komposisi aditif 19%. Hasil terbaik diperoleh dari sampel dengan komposisi aditif 10% yang memiliki induksi remanen 200 Gauss, medan koersif 60 Oersted, dan nilai densitas 3.22 gr/cm3. Hasil ini masih tergolong kecil jika dibandingkan dengan sampel acuan dari LIP!. Faktor utama penyebab hal ini adalah kemurnian bijih besi yang digunakan, karena bijih besi hasil ekstraksi hanya mengandung 51,1 % Fe20 3
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In this Final Project, a permanent magnet has been made using iron ore extracted from Lumajang iron sand as the basic material. As an additive to form BaFe12019, Barium Carbonate (BaC03) is used with various compositions, namely 5%, 10%, 15%, 16.67%, and 19%. The magnet making process is carried out using powder material technology, the powder size used is 400 mesh. Molding is carried out with a pressure of 294 Mpa, a calcination temperature of 1000 °C, and a sintering temperature of 1100 °C, a holding time of 45 minutes with air cooling. The magnet sample was measured for its remanent induction with a Gaussmeter before and after magnetization. The density test of the magnet sample was also carried out. The results obtained showed that the remanent induction and density values ​​had the same pattern to the composition variation, namely increasing up to an additive composition of 10%, then decreasing and increasing again at an additive composition of 19%. The best results were obtained from samples with a 10% additive composition that had a remanent induction of 200 Gauss, a coercive field of 60 Oersted, and a density value of 3.22 gr/cm3. These results are still relatively small when compared to the reference sample from LIP!. The main factor causing this is the purity of the iron ore used, because the extracted iron ore only contains 51.1% Fe20 3

Item Type:	Thesis (Other)
Additional Information:	RSF 621.34 Zul p-1 2008
Uncontrolled Keywords:	Bijih besi, komposisi, induksi remanen, densitas; Iron ore, composition, remanence induction, density
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA417.3 Magnetic testing. T Technology > TA Engineering (General). Civil engineering (General) > TA 459 Metal foams.
Divisions:	Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	EKO BUDI RAHARJO
Date Deposited:	16 Jan 2025 06:57
Last Modified:	16 Jan 2025 06:57
URI:	http://repository.its.ac.id/id/eprint/116355

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