Pengaruh Pengkayaan Nd pada Pembuatan Serbuk Bahan Magnet Nd2Fe14B Terhadap Struktur Kristalin, Mikrostruktur dan Sifat Magnet
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PENGARUH PENGKAYAAN Nd PADA PEMBUATAN SERBUK BAHAN
MAGNET Nd2Fe14B TERHADAP STRUKTUR KRISTALIN,
MIKROSTRUKTUR DAN SIFAT MAGNET
ABSTRAK
Pembuatan serbuk magnet Nd2Fe14B sebagai bahan dasar pembuatan magnet
permanen. Proses pembuatan serbuk magnet Nd 2Fe14B dengan pengkayaan Nd
dilakukan dengan mencampurkan serbuk Neodymium (Nd), serbuk Iron (Fe) dan serbuk
Boron (B) dalam keadaan vakum. Perbandingan komposisi serbuk Nd 1,33 gram; Fe
3,62 gram; B 0,05 gram dengan massa total 5 gram kemudian di heat treatment sampai
suhu 720 oC. Setelah dihasilkan Nd2Fe14B lalu divariasi dengan penambahan Nd sebesar
0,3 gram dan 0,7 gram. Lalu di heat treatment sampai suhu 720 oC. Sampel yang telah
dihasilkan, kemudian dilakukan karakterisasi sifat magnet menggunakan VSM, analisis
mikrostruktur menggunakan SEM-EDX dan analisis fasa yang terbentuk menggunakan
XRD. Hasil penelitian menunjukkan bahwa penambahan Nd 0,7 gram pada serbuk
Nd2Fe14B meningkatkan nilai energi produk (BH-Max). Nilai Mr = 446,5 G, Ms =
3496,01 G, Hc = 261,1 Oe dan BHmax = 17,83 KGOe diperoleh pada penambahan Nd
0,7 gram.
Kata kunci : Magnet Nd2Fe14B, Pengkayaan Nd, dan sifat magnet.
Universitas Sumatera Utara
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INFLUENCE OF Nd-rich IN MANUFACTURING MAGNETIC
POWDERS Nd2Fe14B ON CRYSTAL STRUCTRE,
MICROSTRUCTUR, AND MAGNETIC PROPERTIES
ABSTRACT
Manufacturing of magnetic powders Nd2Fe14B as a basic material to produce
permanent magnet. The process in manufacturing magnetic powders Nd2Fe14B with Ndrich was conducted by mixing Neodymium powders (Nd). Iron powders (Fe), and boron
powders (B) in a vacuum. Ratio of composition are Nd 1,33 gram; 3,62 gram; B 0,05
gram with total mass 5 gram and then heat treatment was conducted to 720ºC. The
results are Nd2Fe14B powder and then variation was conducted with addition of Nd 0,3
gram and 0,7 gram. After that, heat treatment was conducted to 720ºC. The samples
were conducted by characterization of magnetic properties using VSM, microstructure
analysis using SEM-EDX and phase analysis using XRD. The result of study shows that
addition of Nd 0,7 gram to Nd2Fe14B increase the value of energy product (BHmax). The
value of Mr = 446,5 G, Ms = 3496,01 G, Hc = 261,1 Oe and BHmax = 17,83 KGOe was
obtained in addition of Nd 0,7 gram.
Keywords : Magnets Nd2 Fe14B, Nd-Rich, magnetic properties.
Universitas Sumatera Utara
PENGARUH PENGKAYAAN Nd PADA PEMBUATAN SERBUK BAHAN
MAGNET Nd2Fe14B TERHADAP STRUKTUR KRISTALIN,
MIKROSTRUKTUR DAN SIFAT MAGNET
ABSTRAK
Pembuatan serbuk magnet Nd2Fe14B sebagai bahan dasar pembuatan magnet
permanen. Proses pembuatan serbuk magnet Nd 2Fe14B dengan pengkayaan Nd
dilakukan dengan mencampurkan serbuk Neodymium (Nd), serbuk Iron (Fe) dan serbuk
Boron (B) dalam keadaan vakum. Perbandingan komposisi serbuk Nd 1,33 gram; Fe
3,62 gram; B 0,05 gram dengan massa total 5 gram kemudian di heat treatment sampai
suhu 720 oC. Setelah dihasilkan Nd2Fe14B lalu divariasi dengan penambahan Nd sebesar
0,3 gram dan 0,7 gram. Lalu di heat treatment sampai suhu 720 oC. Sampel yang telah
dihasilkan, kemudian dilakukan karakterisasi sifat magnet menggunakan VSM, analisis
mikrostruktur menggunakan SEM-EDX dan analisis fasa yang terbentuk menggunakan
XRD. Hasil penelitian menunjukkan bahwa penambahan Nd 0,7 gram pada serbuk
Nd2Fe14B meningkatkan nilai energi produk (BH-Max). Nilai Mr = 446,5 G, Ms =
3496,01 G, Hc = 261,1 Oe dan BHmax = 17,83 KGOe diperoleh pada penambahan Nd
0,7 gram.
Kata kunci : Magnet Nd2Fe14B, Pengkayaan Nd, dan sifat magnet.
Universitas Sumatera Utara
xi
INFLUENCE OF Nd-rich IN MANUFACTURING MAGNETIC
POWDERS Nd2Fe14B ON CRYSTAL STRUCTRE,
MICROSTRUCTUR, AND MAGNETIC PROPERTIES
ABSTRACT
Manufacturing of magnetic powders Nd2Fe14B as a basic material to produce
permanent magnet. The process in manufacturing magnetic powders Nd2Fe14B with Ndrich was conducted by mixing Neodymium powders (Nd). Iron powders (Fe), and boron
powders (B) in a vacuum. Ratio of composition are Nd 1,33 gram; 3,62 gram; B 0,05
gram with total mass 5 gram and then heat treatment was conducted to 720ºC. The
results are Nd2Fe14B powder and then variation was conducted with addition of Nd 0,3
gram and 0,7 gram. After that, heat treatment was conducted to 720ºC. The samples
were conducted by characterization of magnetic properties using VSM, microstructure
analysis using SEM-EDX and phase analysis using XRD. The result of study shows that
addition of Nd 0,7 gram to Nd2Fe14B increase the value of energy product (BHmax). The
value of Mr = 446,5 G, Ms = 3496,01 G, Hc = 261,1 Oe and BHmax = 17,83 KGOe was
obtained in addition of Nd 0,7 gram.
Keywords : Magnets Nd2 Fe14B, Nd-Rich, magnetic properties.
Universitas Sumatera Utara