High-frequency low-loss MnZn ferrite material and manufacturing method thereof

Abstract

The invention provides a high-frequency low-loss MnZn ferrite material, which comprises main components and auxiliary components, wherein the main components are 53-56 mol percent of ferric oxide, 34-41 mol percent of manganese oxide and 6-10 mol percent of zinc oxide, the content of manganese oxide is measured by Mn; the auxiliary components are at least three selected from CaCO3, SiO2, Nb2O5, CoO, V2O5, SnO2 and TiO2, and based on the total weight of the main components, the auxiliary components comprise: 0.02-0.08 weight percent of CaCO3, 0.002-0.01 weight percent of SiO2, 0.02-0.06 weightpercent of Nb2O5, 0.03-0.20 weight percent of CoO, 0.01-0.05 weight percent of V2O5, 0-0.20 weight percent of SnO2 and 0-0.10 weight percent of TiO2. The invention also provides a manufacturing method of the high-frequency low-loss MnZn ferrite material.

Description

technical field [0001] The invention relates to a MnZn ferrite material and a manufacturing method thereof, and in particular to a high-frequency low-loss MnZn ferrite material and a manufacturing method thereof. Background technique [0002] With the rapid development of TV, computer and various communication industries, the requirements for various inductors, filters, and transformer core materials tend to be high-frequency and low-loss. Therefore, major companies in the world are competing to conduct research. Nearly 20 Over the years, power materials have been improved from PC30 and PC40 to PC44 with lower power consumption and PC50 with higher frequency. These high-performance products are widely used in high-definition digital television, high-resolution computer monitors, pulse code modulation digital communication (PCM), and WDM and DWDM optical fiber communication equipment. [0003] MnZn power ferrite is mainly used as a transformer core for energy transmission an...

AI Technical Summary

Problems solved by technology

But on the other hand, due to SiO 2 and Fe in the main component 2 o 3 Can react to form Fe 2 (SiO 3 ) 3 , and its melting point is 1150°C, which is lower than the sintering temperature of ferrite, so it is prone to abnormal grain growth during sintering, resulting in deterioration of ferrite performance

[0005] Many people have been researching high-frequency low-loss MnZn ferrite materials, but the losses of these existing MnZn ferrite materials are mostly 100kW / m at 60°C, 100°C, 120°C, 500kHz, and 50mT. 3 above, and the sintering temperature required for the manufacture of these materials is set above 1300°C, the highest sintering temperature is high, which is not conducive to saving electric energy and reducing production costs

Images