关键词: 铁氧体, 强度, 影响因素, 制备工艺, 微观结构

Abstract: In order to meet the high strength requirements of ferrite products in the field of electronic components，and solve the problem that the current products are prone to cracks and crushing in practical applications，the key factors affecting the strength of ferrite products are analyzed in depth，and an effective promotion strategy is proposed.Through the systematic investigation of raw material purity，particle size dis‐ tribution，chemical ratio，preparation process parameters，and microstructure (grain size，grain boundary state，porosity)，the microscopic mechanism of the influence of various factors on product strength is re‐ vealed.The results show that the density and uniformity of the sintered body can be significantly improved by selecting the main and auxiliary raw materials with high purity and uniform particle size and optimizing the proportion of each component in the formula.At the same time，precise control of molding process parame‐ ters and precise regulation of multi-stage sintering temperature and atmosphere can effectively improve grain growth and grain boundary binding force，and reduce porosity. It can provide theoretical guidance and practical basis for the development and production of high-performance and high-reliability ferrite materi‐ als. It can effectively reduce the defective rate of products，improve the overall reliability and service life of electronic equipment，and then improve customer satisfaction.

Key words:  , ferrite, strength, influencing factors, preparation process, microstructure