Tape-casting temperature isostatic pressing composite molding preparation method of metal soft magnetic composite material
A composite material and warm isostatic pressing technology, which is applied in the fields of magnetism of inorganic materials, manufacturing of inductors/transformers/magnets, electrical components, etc., can solve the problems of non-dense green body structure, low molding density, and affecting the performance of functional materials, etc., to achieve The effect of high density uniformity, low porosity and smooth surface
Inactive Publication Date: 2014-09-10
ZHEJIANG UNIV
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The invention discloses a tapecasting temperature isostatic pressing composite molding preparation method of a metal soft magnetic composite material. The method comprises the following steps: (1) mixing a passivator and a solvent to obtain a passivating solution, and mixing, stirring and drying the passivating solution and magnetic metal powder to obtain passivated powder; (2) mixing the passivated powder, an organic solvent, a dispersing agent, an adhesive and a plasticizer according to a certain proportion, uniformly stirring, and filtering and de-foaming the mixture through a sieve to prepare slurry which is uniformly dispersed; (3) performing tape casting; (4) performing temperature isostatic pressing on a biscuit. According to the invention, solidification and isostatic pressing processes are simplified into a process, so that a metal soft magnetic composite film prepared by using the blade casting temperature isostatic composite molding method is high in resistivity and good in mechanical strength, and the density and the saturation flux density are greatly improved. By virtue of a more mature tape casting process and a temperature isostatic pressing process, the production process of the metal soft magnetic composite material is simplified, the cost is reduced, the performance is excellent, and the method has a wide application prospect in preparation of electronic devices such as film inductors.
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Property | Measurement | Unit |
Density | 6.9 | g/cm³ |
Saturation flux density | 1.4 | t |
Coercivity | 235.0 | a/m |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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