Open AccessStudy on the Production of Bonded Magnet NdFeB and Polyvinyl Butyral
Author(s) -
Mareanus Mendrofa,
Perdinan Sinuhaji,
Muljadi Muljadi
Publication year - 2020
Publication title -
journal of technomaterial physics
Language(s) - English
Resource type - Journals
eISSN - 2656-0755
pISSN - 2656-0747
DOI - 10.32734/jotp.v2i1.5263
Subject(s) - neodymium magnet , materials science , magnet , polyvinyl butyral , composite material , microstructure , composite number , curing (chemistry) , mixing (physics) , mechanical engineering , physics , quantum mechanics , engineering
bonded magnet is composite magnet material made by mixing magnetic powder with non-magnetic binder. The process in manufacturing bonded magnet NdFeB made by mixing powder of neodymium iron boron (NdFeB) commercial type MQP-B with a polyvinyl butyral powder using a glass beaker. The comparisons of variation in composing NdFeB magnets powders with a binder of PVB (% weight) are 98:2, 96:4, 94:6 and 93:7 of 8 grams from total mass of the sample. After mixing the powder, it is molded by using a compression molding method with 8 tons pressure for 20 minutes at curing temperature 1600C. The molded samples are conducted by characterizing the physical properties which include measurement of density, microstructure analysis using SEM-EDX and magnetic properties which include measurement of the magnetic field strength using a Gaussmeter and hysteresis curve using VSM. The result of the study shows that the addition of and binder PVB in bonded magnet NdFeB causes a decrease in the density and magnetic field strength. The best result of density and magnetic field in the manufacture of bonded magnets is obtained by the addition of 2 % binder of 5.66 g/cm3 and strong magnetic field of 1862.4 G. the score of Mr = 72.86 emu/g, Ms = 103 emu/gram, Hc = 8.490 KOe and BHmax = 5.1 MGOe was obtained on the addition of PVB 2 %.