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Composite bonded magnet becomes one of interesting magnetic materials based on its mechanical and magnetic characteristics. Besides that, the application of composite in magnet materials fabrication reduces the cost which means that it is more effective and efficient. However, composite bonded magnet does not have a very good stability due to its chemical content. This study tested the properties of NdFeB based composite bonded magnet that was fabricated from the mixture of NdFeB and BaFe12O19 powders also bakelite polymer in compression method. Physical properties of the samples were analysed through bulk density with dimensional method, Vickers Hardness (HV) test, microstructure using optical microscope (OM), magnetic properties using Gaussmeter and hysterical curve using Vibrating Sample Magnetometer (VSM). From the overall of the characteristic tests, the best composition obtained for NdFeB composite bonded magnet is 95%wt NdFeB, 5%wt BaFe12O19 with 2.5%wt of bakelite. This composition results in NdFeB composite bonded magnet with bulk density of 4.148 g/cm3, 981.75 Gauss for magnetic flux. While remanence value (Br), coercivity (Hcj) and product energy (BH max) respectively are 4.410 kG, 9.334 kOe, and 3.679 MGOe. Meanwhile, the best hardness value, 163.58 HV, is given at BaFe12O19 with 2.5%wt of bakelite. Particle size observer using OM with Image-j gave the size of around 0.938-1.450 μm. Overall, the addition of BaFe12O19 and bakelite reduces the density and magnetic flux values whereas the hardness value increases with the addition of the two materials.

journal of physics. conference series

The Effect of Composite Bonded Magnet NdFeB/BaFe<sub>12</sub>O<sub>19</sub> Composition with an Addition of Bakelite to Physical and Magnetic Properties

The Effect of Composite Bonded Magnet NdFeB/BaFe12O19 Composition with an Addition of Bakelite to Physical and Magnetic Properties

The Effect of Composite Bonded Magnet NdFeB/BaFe₁₂O₁₉ Composition with an Addition of Bakelite to Physical and Magnetic Properties