Sintering method for high saturated flux density MnZn ferrite

Abstract

This invention provides a sintering method for a high-saturated flux density MnZn ferrite including the following steps: a, a first temperature-rising stage, b, a second temperature-rising stage, c, a heat preservation stage, d, temperature-reducing, which can increase the saturated flux density of MnZn ferrite greatly by controlling the temperature and oxygen partial pressure during the sintering process, besides, no expensive asistant components are needed in the preparation process.

Description

technical field

[0001] The invention relates to a sintering method of MnZn ferrite, in particular to a sintering method of MnZn ferrite with high saturation magnetic flux density. Background technique

[0002] MnZn ferrite can be used as a soft magnetic material and is widely used in power transformers, choke coils and other communication equipment and household appliances industries. When used in the power transformer core used in the frequency range of 100kHz to hundreds of kHz, compared with other ferrite materials and metal soft magnetic materials, MnZn ferrite has small power consumption and large saturation flux density, so MnZn ferrite Oxygen is an important material as a transformer core.

[0003] However, with the miniaturization of electronic equipment and high output power of power supplies, and in order to be used normally under high temperature conditions, the saturation magnetic flux density (Bs) of ordinary MnZn ferrite materials, especially high temperature ...