Abstract
Fe/SiO2Na2OCaO glass soft magnetic composite (SMC) was fabricated by hot pressing with low compaction pressure (80
MPa). Sol gel method was used to create SiO2Na2OCaO glass insulation on the surface of pure iron powders. Iron powder
was well coated with glass substances, which have some micro cracks. No significant deformation or grain size difference of
iron particles was observed in Fe/SiO2Na2OCaO glass SMC in different directions. Continuous distribution of Si and Na
elements between iron particles was revealed by EDS. Interface between iron particles and amorphous SiO2Na2OCaO
glass layer was straight, clean and well bonded. Static magnetic properties of Fe/SiO2Na2OCaO glass SMC could be
improved by annealing treat ment, while the electrical resistivity (ρ) decreased slightly after annealing treatment. The eddy
current loss increased more rapidly than the hysteresis loss with frequency for Fe/SiO2Na2OCaO glass SMC in present
work. It should be due to the low electrical resistivity of composites. Therefore, the coating and fabrication parameters should
be further optimized in future research..
Keywords
Soft magnetic composite, Sol gel method, Glass insulating layer, Low pressure.
Citation
WEI DING, LONGTAO, JIANG, KANG MA, WENSHU YANG, GAOHUI WU, Processing and properties of soda lime silica glass glass insulation soft magnetic composite, Optoelectronics and Advanced Materials - Rapid Communications, 8, 1-2, January-February 2014, pp.68-71 (2014).
Submitted at: Jan. 8, 2013
Accepted at: Jan. 22, 2014