Magnetic powder, method for producing magnetic powder, powder magnetic core, and coil part
A powder and magnetic technology, applied in the field of powder magnetic cores and coil components, can solve the problems such as the decrease of the magnetic permeability of the particle forming body
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no. 1 approach
[0024] First, the magnetic powder of the first embodiment will be described.
[0025] figure 1 It is a cross-sectional view schematically showing one particle of the magnetic powder of the first embodiment. In addition, in the following description, one particle of magnetic powder is also called a "magnetic particle".
[0026] figure 1 The illustrated magnetic particle 1 has a core 2 , a base layer 3 provided on the surface of the core 2 , and an insulating layer 4 provided on the surface of the base layer 3 . Each part will be described below.
[0027] 1.1 Core
[0028] The core 2 is a particle containing a soft magnetic material. Examples of the soft magnetic material included in the core 2 include pure iron, Fe-Si alloys such as silicon steel, Fe-Ni alloys such as Permalloy, Fe-Co alloys such as Permalloy, sendust, etc. Examples of various Fe-based alloys such as Fe-Si-Al-based alloys, Fe-Cr-Si-based alloys, and Fe-Cr-Al-based alloys such as magnetic alloys include va...
no. 2 approach
[0083] Next, the manufacturing method of the magnetic powder of 2nd Embodiment is demonstrated.
[0084] figure 2 It is a process drawing which shows the manufacturing method of the magnetic powder of 2nd Embodiment. In addition, in the following description, to manufacture figure 1 The method shown with magnetic particle 1 is described as an example.
[0085] Such as figure 2 As shown, the manufacturing method of the magnetic powder of the second embodiment includes: a preparation step S1 of preparing particles 5 with a base layer having a core 2 and a base layer 3; and an insulating layer forming step S2 of forming the particles 5 with a base layer It is used for a film-forming treatment using a first organosiloxane compound and a second organosiloxane compound having a different basic constitutional unit from the first organosiloxane compound as raw materials. Hereinafter, each step will be described.
[0086] 2.1 Preparation process S1
[0087] First, the underlayer-...
no. 3 approach
[0121] Next, a method for producing the magnetic powder of the third embodiment will be described.
[0122] image 3 It is a process drawing which shows the manufacturing method of the magnetic powder of 3rd Embodiment. In addition, in the following description, to manufacture figure 1 The method shown with magnetic particle 1 is described as an example.
[0123] Hereinafter, the third embodiment will be described, but in the following description, the differences from the second embodiment will be mainly described, and the description of the same matters will be omitted.
[0124] The third embodiment is the same as the second embodiment except that the film formation process in the insulating layer forming step S2 is different.
[0125] Such as image 3 As shown, the manufacturing method of the magnetic powder of the third embodiment has a preparatory step S1 and an insulating layer forming step S2. Hereinafter, each step will be described.
[0126] 3.1 Preparation proc...
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Abstract
Description
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