A kind of iron alloy magnetic material and preparation method thereof
A technology of magnetic materials and ferroalloys, which is used in the manufacture of magnetic materials, magnetic objects, inductors/transformers/magnets, etc. It can solve the problems of mechanical reliability, poor strength or insulation performance, etc., and achieve high insulation, uniform composition and high strength. Effect
Active Publication Date: 2020-10-13
SHENZHEN SUNLORD AUTOMOTIVE ELECTRONICS CO LTD
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[0003] The magnetic alloy materials currently used mainly include Fe-Si, FeSiAl, FeSiCr, FeNi and FeNiMo, etc., but although FeSi, FeSiAl, FeSiCr and Fe-Ni have high magnetic permeability after heat treatment, their strength or insulation performance is relatively low. Poor, easy to have mechanical reliability problems during use, or can not be directly used for related electroplating treatment, so it is necessary to develop ferroalloy magnetic materials with high strength and high insulation performance
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[0021] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0022] The present invention provides a ferroalloy magnetic material. In a specific embodiment, the raw materials for preparing the ferroalloy magnetic material include the following elemental components in mass percentages: Fe 85.5%-93.0%, Cr3.0%-6.5%, Al3 .0%-7.0%, Si 0.5%-2.0%, and Mn 0.1%-0.8%.
[0023] In a preferred embodiment, one or a combination of more than one of the following schemes can also be used:
[0024] In the raw materials, the mass percentage of Si is 0.5%-1.0%.
[0025] In the raw materials, the mass percentage of Mn is 0.1%-0.5%.
[0026] Among the raw materials, the average particle diameters of Fe, Cr, Al, Si and Mn are 5 μm-20 μm, 5 μm...
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Abstract
The invention discloses an iron alloy magnetic material and a preparation method thereof. Raw materials for preparing the iron alloy magnetic material comprise the following elemental components in percentages by weight: 85.5% to 93.0% of Fe, 3.0% to 6.5% of Cr, 3.0% to 7.0% of Al, 0.5% to 2.0% of Si and 0.1% to 0.8% of Mn. The preparation method comprises the following steps: (1) mixing: mixing the raw materials of the iron alloy magnetic material, a process control agent and grinding balls; (2) ball-milling: carrying out ball-milling in a protective atmosphere to obtain alloy powder; and (3) pelleting: adding an organic solvent and resin into the powder for continuous ball-milling to obtain a sizing agent, drying the sizing agent and then smashing the dried sizing agent, and then filtering to obtain the iron alloy magnetic material. The iron alloy magnetic material obtained in the invention is uniform in composition, has high strength and high insulation characteristic, and meets the requirements of an power inductor for magnetic core strength and insulation performance.
Description
technical field [0001] The invention relates to the technical field of iron alloy materials, in particular to an iron alloy magnetic material and a preparation method thereof. Background technique [0002] At present, ferroalloy magnetic materials are widely used in electronic products. With the rapid development of the electronic industry, the demand for processing speed and capacity of fast-consuming intelligent terminal products makes the density of circuits an inevitable trend, which directly leads to the inductive components. It is developing in the direction of small size, and the strength problem caused by product miniaturization is one of the key points in the application of inductors; at the same time, alloy power inductors generally adopt the process of terminal Ag, electroplating Ni and Sn plating to realize the manufacture of subsequent products , and if the surface insulation performance of the material is poor during the electroplating process, the plating phen...
Claims
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IPC IPC(8): H01F1/147H01F27/255H01F41/02C22C38/04C22C38/02C22C38/06C22C38/34C22C38/18
CPCC22C38/02C22C38/04C22C38/06C22C38/18C22C38/34H01F1/14791H01F27/255H01F41/0253
Inventor 方萌聂敏谈敏
Owner SHENZHEN SUNLORD AUTOMOTIVE ELECTRONICS CO LTD