Preparation method of soft magnetic composite material and soft magnetic composite material

The invention is suitable for the technical field of materials, and provides a preparation method of a soft magnetic composite material and the soft magnetic composite.The preparation method comprises the steps that ammonia water is added into a water and/or alcohol solution of carbonyl iron powder to be fully mixed, and a pretreated carbonyl iron powder solution is obtained; uniformly mixing zirconium n-butoxide with an alcohol solvent, adding the mixture into the pretreated carbonyl iron powder solution for full reaction, and filtering, washing and drying to obtain the zirconium n-butoxide powder. After the soft magnetic composite material obtained in the invention is sintered at 250 DEG C, the saturation flux density is reduced by 5.58% through the test of a vibrating sample magnetometer, and the saturation flux density is reduced by 41.13% before and after the carbonyl iron powder which is not coated is sintered, so that the performance of the soft magnetic composite material is improved. The carbonyl iro