Karakterisasi Magnet Komposit Barium Heksaferit Dengan Penambahan FeB Sebagai Matrik dan Silicone Rubber Sebagai Filler
KARAKTERISASI MAGNET KOMPOSIT BARIUM
HEKSAFERIT DENGAN PENAMBAHAN FeB SEBAGAI
MATRIK DAN SILICONE RUBBER SEBAGAI FILLER
ABSTRAK
Pembuatan magnet komposit berbahan dasar Barium Heksaferit dengan
penambahan FeB dan filler silicone rubber telah berhasil dilakukan. Bahan baku
Barium Heksaferit dan FeB di milling secara terpisah dengan menggunakan
Planetary Ball Mill (PBM) selama 24 jam dan High Energy Milling (HEM)
selama 1 jam kemudian di mixing menggunakan PBM dengan perbandingan
BaFe12O19 : FeB adalah 97:3, 95:5, dan 93:7 %berat. Serbuk hasil mixing
dikalsinasi pada suhu 900°C, kemudian ditambahkan silicone rubber 20, 30, 40,
dan 50 %berat sebagai filler bahan komposit. Karakterisasi material meliputi
struktur mikro (XRD), bulk density, sifat magnetik, dan uji tarik. Hasil XRD
menunjukkan dengan penambahan FeB meningkatkan jumlah fasa hematit
(Fe2O3). Hasil bulk density menunjukkan nilai rapat jenis tertinggi pada
penambahan 20% berat silicone rubber 2,251×10-3kg/m3 dengan nilai koersivitas
jHc = 2,85× A/m dan nilai modulus elasitsitas 0,99 MPa. Dari hasil penelitian
diperoleh magnet komposit permanen yang tahan lama karena memiliki nilai
koersivitas yang tinggi.
Kata kunci: Magnet komposit, Barium Heksaferit, ferro boron, silicone rubber,
karakterisi
Universitas Sumatera Utara
CHARACTERIZATION OF MAGNET COMPOSITE BARIUM
HEKSAFERRITE WITH FeB ADDITION AS MATRIX AND
SILICONE RUBBER AS FILLER
ABSTRACT
Fabrication of composite magnet material based on Barium Heksaferit with the
addition FeB and silicone rubber as filler has been successfully prepared. The
raw materials Barium Heksaferit and FeB separately milled by using Planetary
Ball Mill (PBM) for 24 hours and High Energy Milling (HEM) for 1 hour and
then mixed by using PBM with composition ratio BaFe12O19: FeB are 97: 3, 95: 5,
and 93: 7 %weight. The powder has mixed calcined at 900 °C, then added
silicone rubber 20, 30, 40, and 50% weight as filler composite materials. The
caracterization of materials are the microstructure (XRD), bulk density, magnetic
properties (VSM), and the tensile test. The XRD results showed the addition of
FeB increasing phases of hematite (Fe2O3). The results show the highest bulk
density value in the addition of 20% weight of silicone rubber is 2.251 × 10 3
kg/m3 and coercivity value, jH C = 2,85× A/m and young modulus value is 0.99
MPa. The results were obtained permanent magnet composites are durable
because has a high coercivity.
Keywords: Composite magnet, Barium Heksaferit, ferro boron, silicone rubber,
characterization
Universitas Sumatera Utara
HEKSAFERIT DENGAN PENAMBAHAN FeB SEBAGAI
MATRIK DAN SILICONE RUBBER SEBAGAI FILLER
ABSTRAK
Pembuatan magnet komposit berbahan dasar Barium Heksaferit dengan
penambahan FeB dan filler silicone rubber telah berhasil dilakukan. Bahan baku
Barium Heksaferit dan FeB di milling secara terpisah dengan menggunakan
Planetary Ball Mill (PBM) selama 24 jam dan High Energy Milling (HEM)
selama 1 jam kemudian di mixing menggunakan PBM dengan perbandingan
BaFe12O19 : FeB adalah 97:3, 95:5, dan 93:7 %berat. Serbuk hasil mixing
dikalsinasi pada suhu 900°C, kemudian ditambahkan silicone rubber 20, 30, 40,
dan 50 %berat sebagai filler bahan komposit. Karakterisasi material meliputi
struktur mikro (XRD), bulk density, sifat magnetik, dan uji tarik. Hasil XRD
menunjukkan dengan penambahan FeB meningkatkan jumlah fasa hematit
(Fe2O3). Hasil bulk density menunjukkan nilai rapat jenis tertinggi pada
penambahan 20% berat silicone rubber 2,251×10-3kg/m3 dengan nilai koersivitas
jHc = 2,85× A/m dan nilai modulus elasitsitas 0,99 MPa. Dari hasil penelitian
diperoleh magnet komposit permanen yang tahan lama karena memiliki nilai
koersivitas yang tinggi.
Kata kunci: Magnet komposit, Barium Heksaferit, ferro boron, silicone rubber,
karakterisi
Universitas Sumatera Utara
CHARACTERIZATION OF MAGNET COMPOSITE BARIUM
HEKSAFERRITE WITH FeB ADDITION AS MATRIX AND
SILICONE RUBBER AS FILLER
ABSTRACT
Fabrication of composite magnet material based on Barium Heksaferit with the
addition FeB and silicone rubber as filler has been successfully prepared. The
raw materials Barium Heksaferit and FeB separately milled by using Planetary
Ball Mill (PBM) for 24 hours and High Energy Milling (HEM) for 1 hour and
then mixed by using PBM with composition ratio BaFe12O19: FeB are 97: 3, 95: 5,
and 93: 7 %weight. The powder has mixed calcined at 900 °C, then added
silicone rubber 20, 30, 40, and 50% weight as filler composite materials. The
caracterization of materials are the microstructure (XRD), bulk density, magnetic
properties (VSM), and the tensile test. The XRD results showed the addition of
FeB increasing phases of hematite (Fe2O3). The results show the highest bulk
density value in the addition of 20% weight of silicone rubber is 2.251 × 10 3
kg/m3 and coercivity value, jH C = 2,85× A/m and young modulus value is 0.99
MPa. The results were obtained permanent magnet composites are durable
because has a high coercivity.
Keywords: Composite magnet, Barium Heksaferit, ferro boron, silicone rubber,
characterization
Universitas Sumatera Utara