EFFECTS OF CURING TEMPERATURE AND ATMOSPHERE ON THE PROPERTIES OF ISOTROPIC BONDED NdFeB MAGNETS.

Authors

  • Toto Sudiro Research Center for Physics, Indonesian Institute of Sciences-LIPI
  • Agus SukartoWismogroho Research Center for Physics, Indonesian Institute of Sciences-LIPI
  • Perdamean Sebayang Research Center for Physics, Indonesian Institute of Sciences-LIPI
  • Theresya Simanjuntak Department of Physics, University of Sumatera Utara
  • AditiaWarman Department of Physics, University of Sumatera Utara
  • Nanang Sudrajat Research Center for Electronics and Telecommunications, Indonesian Institute of Sciences-LI

DOI:

https://doi.org/10.17146/jsmi.2015.16.2.4209

Keywords:

Bonded NdFeB magnet, Curing temperature, Atmosphere, Bulk density, Magnetic properties

Abstract

EFFECTS OF CURING TEMPERATURE AND ATMOSPHERE ON THE PROPERTIES OF ISOTROPIC BONDED NdFeB MAGNETS. The purpose of this paper was to synthesize the isotropic bonded NdFeB magnets at varying curing temperature and atmosphere, and to clarify their properties. For the aforesaid objective, the NdFeB powder was mixed with polyacrylate binder (3wt%) and compacted by hydraulic pressure with a compressive pressure of 30 MPa. The specimens were then separately cured at 100, 150, 180 and 200°C for 1 h in air and vacuum. The effects of curing temperature in air and vacuum on the bulk density and magnetic properties of isotropic bonded NdFeB magnets were studied. The results indicated that the bulk density and fluxmagnet density of bonded NdFeB magnets decreased with increase in curing temperature. This seems to be due to the binder vaporization and oxidation of element of NdFeB magnet. The bulk density of specimens cured in air was higher than that in vacuum for all temperatures. On the contrary, the magnetic flux density showed the opposite behavior. The optimum magnetic properties were achieved at curing temperature of 100oC for 1 h in vacuumwith Br = 6,61 kG, HCJ = 8,841 kOe, and BHmax = 9,01 MGOe.

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Published

31-01-2015

How to Cite

Toto Sudiro, Agus SukartoWismogroho, Perdamean Sebayang, Theresya Simanjuntak, AditiaWarman, & Nanang Sudrajat. (2015). EFFECTS OF CURING TEMPERATURE AND ATMOSPHERE ON THE PROPERTIES OF ISOTROPIC BONDED NdFeB MAGNETS. Jurnal Sains Materi Indonesia, 16(2), 49–53. https://doi.org/10.17146/jsmi.2015.16.2.4209

Issue

Vol. 16 No. 2 (2015): Jurnal Sains dan Materi Indonesia

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