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Soft magnetic alloy powder, compact, and inductance element

一种软磁性合金、电感元件的技术，应用在变压器/电感的零部件、电气元件、磁性物体等方向，能够解决记载、没有添加量等问题，达到磁性优良、减小磁芯损耗的效果

Active Publication Date: 2008-06-18
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, in Patent Document 3, although it is disclosed that Cr, Si, Cu, and Co are used as elements added to PC permalloy, there is no description about the added amount thereof.

Method used

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  • Soft magnetic alloy powder, compact, and inductance element
  • Soft magnetic alloy powder, compact, and inductance element
  • Soft magnetic alloy powder, compact, and inductance element

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Embodiment

[0070] Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. In addition, in the following embodiments, the contents of Fe and Ni are based on the total mass of Fe and Ni, and the contents of Co and Si are based on the contents of Fe, Ni, Co, and Si.

[0071] (Preparation of Soft Magnetic Alloy Powder)

[0072] First, ingots, blocks, or pellets of Fe—Ni alloy, Fe simple substance, Ni simple substance, Co simple substance, and Si simple substance are prepared. Next, these were mixed according to the composition shown in Table 1 and Table 2, and accommodated in the crucible arrange|positioned in the water atomization apparatus. Then, in an inert atmosphere, use a working coil installed outside the crucible to heat the crucible to above 1500°C by high-frequency induction to melt and mix the ingots, blocks, or particles in the crucible to obtain a melt.

[0073] Next, the molten body in...

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Abstract

A soft magnetic alloy powder containing Fe-Ni-based crystal particles is provided as one capable of adequately reducing core loss of a powder magnetic core and achieving satisfactory magnetic characteristics at an effective operating temperature of an element. The present invention provides a soft magnetic alloy powder containing Fe-Ni-based crystal particles containing 45 to 55 mass % Fe and 45 to 55 mass % Ni, relative to a total mass of Fe and Ni, and containing 1 to 12 mass % Co and 1.2 to 6.5 mass % Si, relative to a total mass of Fe, Ni, Co, and Si.

Description

technical field [0001] The invention relates to a soft magnetic alloy powder, a pressed powder body and an inductance element. Background technique [0002] Conventionally, powder cores are generally used as one type of magnetic cores included in inductance elements and the like. As the material of the powder magnetic core, Fe-based soft magnetic metal powder which is a soft magnetic material is often used. Since the Fe-based soft magnetic metal powder has low electrical resistance of the material itself, even if the insulation between particles is improved, the core loss (core loss) is relatively high. In recent years, along with demands for miniaturization of inductance elements and the like, it is desired to increase resistance and reduce core loss in powder magnetic cores. Therefore, it is necessary to further improve the existing soft magnetic materials as described above. Then, in order to increase the electrical resistance of the Fe-based soft magnetic metal powder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/20C22C38/08H01F27/255
CPCH01F2017/048C22C19/03H01F1/26C22C33/0285C22C1/0433H01F1/14766H01F1/14733C22C2202/02H01F41/0246H01F17/04H01F3/08C22C38/08C22C33/00
Inventor 富田宏茂吕英治高藤今朝春远田孝友
Owner TDK CORPARATION
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