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The invention discloses a rare-earth ferrite core material which comprises a main material and an additive, wherein the main material comprises the following components by mol ratio: 66-69.6mol of Fe2O3, 14.2-21mol of manganese oxide, 15-17.5mol of zinc oxide, 0.4-0.7mol of carborundum, 2-3mol of molybdenum oxide, 0.7-1mol of chromium trioxide and 0.01-0.02mol of lanthanum-cladded carbonyl powder; the additive comprises the following components in proportion by weight of the ferrite core material: 100-200ppm of boron trifluoride, 300-500ppm of tantalum carbide and 800-900ppm of magnesia. The lanthanum-cladded carbonyl powder added into the ferrite core material has high magnetic flux under high frequency and ultrahigh frequency, and the overall performance of a finished product is further improved. The magnetic core material has the characteristics of high magnetic energy product, stable magnetic performance, high mechanical performance and the like.
The invention discloses a rare-earth ferrite core material which comprises a main material and an additive, wherein the main material comprises the following components by mol ratio: 66-69.6mol of Fe2O3, 14.2-21mol of manganese oxide, 15-17.5mol of zinc oxide, 0.4-0.7mol of carborundum, 2-3mol of molybdenum oxide, 0.7-1mol of chromium trioxide and 0.01-0.02mol of lanthanum-cladded carbonyl powder; the additive comprises the following components in proportion by weight of the ferrite core material: 100-200ppm of boron trifluoride, 300-500ppm of tantalum carbide and 800-900ppm of magnesia. The lanthanum-cladded carbonyl powder added into the ferrite core material has high magnetic flux under high frequency and ultrahigh frequency, and the overall performance of a finished product is further improved. The magnetic core material has the characteristics of high magnetic energy product, stable magnetic performance, high mechanical performance and the like.
Rare-earth ferrite core material
WENG GEPING (author)
2015-04-08
Patent
Electronic Resource
English
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