Inorganic insulating adhesive for soft magentic metal powder core andits prepn process

Abstract

The present invention provides one kind of inorganic insulating adhesive for soft magnetic metal powder core. The inorganic insulating adhesive consists of SiO2, Al2O3, ZrO2, mica powder and water mixed together, and possesses both insulating and adhering functions. The present invention also provides the method of using the inorganic insulating adhesive in preparing soft magnetic metal powder core. Using the inorganic insulating adhesive can result in high magnetic performance of the magnetic metal powder core and enhanced mechanical strength, and the soft magnetic powder core without organic matter contained has no ageing and performance degradation caused by heat.

Description

technical field

[0001] The invention belongs to the field of metal powder alloys, and in particular relates to an inorganic insulating adhesive for a metal soft magnetic powder core without organic matter, and a method for preparing the metal soft magnetic powder core by using the inorganic insulating adhesive. Background technique

[0002] The metal soft magnetic powder core is obtained by mixing soft magnetic alloy powder with insulating agent and binder uniformly, pressing and molding, and heat-treating. At present, metal magnetic powder cores mainly include iron powder cores, iron-nickel alloy powder cores, iron-nickel-molybdenum alloy powder cores, iron-silicon aluminum alloy powder cores, and FeCuNbSiB series amorphous nanocrystalline powder cores developed in recent years. Metal soft magnetic powder cores are the key components for making inductors, especially inductive devices in high-frequency, high-current and high-power circuits. The main parameters that reflect ...

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