Processing and properties of soda lime silica glass glass insulation soft magnetic composite

作者：Ding Wei; Jiang Longtao; Ma Kang; Yang Wenshu; Wu Gaohui^*

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2014, 8(1-2): 68-71.

• Soft magnetic composite
• Sol-gel method
• Glass insulating layer
• Low pressure

Fe/SiO2-Na2O-CaO glass soft magnetic composite (SMC) was fabricated by hot-pressing with low compaction pressure (80 MPa). Sol-gel method was used to create SiO2-Na2O-CaO 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 gain size difference of iron particles was observed in Fe/SiO2-Na2O-CaO 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 SiO2-Na2O-CaO glass layer was straight, clean and well bonded. Static magnetic properties of Fe/SiO2-Na2O-CaO glass SMC could be improved by annealing treatment, while the electrical resistivity (rho) decreased slightly after annealing treatment. The eddy current loss increased more rapidly than the hysteresis loss with frequency for Fe/SiO2-Na2O-CaO 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.

• 出版日期2014-2
• 单位哈尔滨工业大学