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WEI DING1, LONGTAO JIANG1, ZIYANG XIU1, KANG MA1, WENSHU YANG1, GAOHUI WU1,2,*
In present work, two related models of SMC (microst ructure model and electric circuit model) were built, and the relationship among electrical resistivity ( ρ ), insulator volume content γ ) and powder coating rate (α) was derived and discussed. From the obtained relationship, the coating rate could be quant ified and be comparable during preparation. The calculation indicates that both increase of insulator volume content and powder coating rate could improve the electrical resistivity. Moreover, significant improvement of electrical resistivity could only be obtained at very high coating rate (above 99.5%) at a constant insulator volume content (15 vol.%). Therefore, comprehensive consideration of electric and magnetic properties, more effort should be expended to explore effective processing method to obtain iron powders with high coating rate..
Soft magnetic composite, Sol gel method, Insulating layer, Permeability.
WEI DING, LONGTAO JIANG, ZIYANG XIU, KANG MA, WENSHU YANG, GAOHUI WU, Theoretical relationship among electrical resistivity , insulator volume content and powder coating rate of soft magnetic composite, Optoelectronics and Advanced Materials - Rapid Communications, 7, 5-6, May-June 2013, pp.466-469 (2013).
Submitted at: Dec. 7, 2012
Accepted at: June 12, 2013
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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