Karakterisasi Magnet Komposit Barium Heksaferit dengan Penambahan Feb sebagai Matrik dan Silicone Rubber sebagai 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- 3kg/m3 and coercivity value, jHC = 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.