Pengaruh Aditif Nd2O3 Terhadap Sifat Fisis, Sifat Magnet Dan Struktur Kristal Pada Pembuatan Magnet Barium Heksaferit

PENGARUH ADITIF Nd 2 O 3 TERHADAP SIFAT FISIS, SIFAT
MAGNET DAN STRUKTUR KRISTAL PADA PEMBUATAN
MAGNET BARIUM HEKSAFERIT

ABSTRAK

Penelitian mengenai pengaruh aditif Nd 2 O 3 Terhadap sifat fisis, sifat magnet dan
struktur kristal pada pembuatan magnet Barium Hexaferit (BaFe 12 O 19 ) dengan
menggunakan metode metalurgi serbuk telah dilakukan. Aditif Nd 2 O 3 divariasikan
antara lain : 0%, 0,8% dan 1,2% wt dan suhu sintering divariasi : 1.100℃ , 1.150℃
dan 1.200℃ yang masing-masing ditahan selama 2 jam menggunakan tungku listrik
thermolyne. Proses preparasi material dasar berupa Barium Karbonat (BaCO 3 ),
(Fe 2 O 3 ) murni, dan Neodymium oksida (Nd 2 O 3 ) dilakukan dengan pencampuran
menggunakan mortar dalam media etanol selama 30 menit. Bahan kemudian
dikeringkan dalam oven selama 2 jam. Selanjutnya serbuk tersebut digerus dan
dilakukan kalsinasi dengan suhu 1.000℃ dengan lama penahanan 1 jam. Serbuk hasil
kalsinasi kemudian dihaluskan menggunakan mortar. Pencetakan serbuk dilakukan
dengan pencampuran binder celuna WE-518 sebanyak 3%. Proses kompaksi
dilakukan dengan diameter 18,32 mm dan tebal 4,42 mm. Karakterisasi yang
dilakukan meliputi : pengukuran bulk density, susut bakar, flux density, analisa
struktur kristal dengan XRD dan analisa sifat magnetik menggunakan VSM. Dari

hasil pengukuran bulk density, susut bakar, dan flux magnetic menunjukkan bahwa
nilai cendrung meningkat semakin tingginya suhu sintering, terkecuali pada flux
magnetik tanpa ada penambahan aditif cendrung menurun seiring meningkatnya suhu
sintering. Dari hasil karakterisasi bulk density dan flux magnetic diperoleh hasil
optimum yaitu pada penambahan Nd 2 O 3 0,8% dengan suhu 1.200℃. Pada kondisi ini
diperoleh : nilai bulk density = 5,043 gr/cm3 dan flux magnet = 464,75 G, nilai susut
bakar 10,2% .
Kata Kunci : Aditif Nd 2 O 3 , Barium Heksaferit, Densitas, Fluks Magnetik, Sintering

Universitas Sumatera Utara

ADDITIVE EFFECT ND 2 O 3 TO THE PHYSICAL PROPERTIES,
MAGNETIC PROPERTIES AND CRYSTAL STRUCTURE ON
THE MANUFACTURE OF BARIUM HEXAFERRITE

ABSTRACT

Research on the Additive effect Nd 2 O 3 To the physical properties, Magnetic
properties and Crystal structure on the manufacture of Barium Hexaferrite
(BaFe 12 O 19 )

by

using

the

method

metallurgy has

been

done.

Nd 2 O 3

additivevariations include : 0%, 0,8%, and 1,2% wt and temperature sintering
variations : 1.100℃ , 1.150℃, and 1.200℃ hold for 1 hours using a Thermolyne
electric furnace. The preparation process of basic materials such as Barium

Carbonate (BaCO 3 ), (Fe 2 O 3 ) pure, and Neodymium oxide (Nd 2 O 3 )is done by the
mortar mixing for 30 minute using ethanol. Then it is dried at oven for 2 hours. then
the powders were crushed. After that,continue by calcination with temperature 1.000
℃ with 1 hour detention time. Calcined powders results then mashed by hand mortar.

The molding process done by mixing powder binder celuna WE-518 with 3%

composition. The process of compaction is done with pressing 8 ton to form a pellet
with a diameter of 18,32 mm and 4,42 mm thick. The characterizations was
conducted : measurement of bulk density, keel fuel, flux density, Analysis of crystal
structure with XRD and Analysis of magnetic properties using VSM. From the
measurement of bulk density, keel fuel and flux density shows that the value tends to
increase the higher sintering temperature, Except for the magnetic flux without any
additive additions tends to decrease as the sintering temperature increases. From the
characterization of bulk density and magnetic flux, the optimum result is obtained at
the addition of Nd 2 O 3 0,8% with temperature 1,200 ℃. In this condition obtained:
bulk density of 5.043 gr / cm3 and flux magnet of 464.75 G, keel fuel of 10.2%.

Keywords :Additive Nd 2 O 3 , Barium Hexaferrite, Density, Flux Magnetic, Sintering

Universitas Sumatera Utara