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A kind of gradient iron-silicon alloy with different silicon content distribution and its preparation method

A technology of iron-silicon alloy and silicon content, which is applied in the field of gradient iron-silicon alloy with different silicon content distribution and its preparation, can solve the problems such as difficulty in obtaining a single texture, achieve good surface quality, low iron loss, and controllable process strong effect

Inactive Publication Date: 2011-11-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the grain orientation is significantly affected by the original Si and Al content in the base material, the intermediate cold rolling process and the final diffusion annealing process, and it is difficult to obtain a single texture with good performance.

Method used

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  • A kind of gradient iron-silicon alloy with different silicon content distribution and its preparation method
  • A kind of gradient iron-silicon alloy with different silicon content distribution and its preparation method
  • A kind of gradient iron-silicon alloy with different silicon content distribution and its preparation method

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preparation example Construction

[0030] The present invention proposes a preparation method of gradient iron-silicon alloys with different silicon content distributions, such as figure 1 As shown, it specifically includes the following steps:

[0031] Step 1. Prepare the target:

[0032] Preparation of Fe by melting and casting 5 Si 3 target.

[0033] Step 2. Prepare low-silicon silicon steel sheet substrate:

[0034] After the low-silicon silicon steel sheet with a thickness of less than or equal to 0.35mm (silicon content is 3wt.%, preferably 35WW250 brand) is removed with sandpaper, the wire is cut into a sample as a substrate. For the JCK-500 magnetron sputtering instrument, The size of the sample is 40mm long, 8mm wide and 0.35mm thick. Other types of magnetron sputtering machines can be selected according to the size of the substrate table. Clean the oil stains with acetone (analytical pure) in an ultrasonic cleaner for use to obtain a low-silicon silicon steel substrate.

[0035] Step 3, magnetron ...

Embodiment 1

[0041] The preparation method of the gradient iron-silicon alloy with different silicon content distribution prepared in this implementation specifically includes the following steps:

[0042] Step 1. Prepare the target:

[0043] Preparation of Fe by melting and casting 5 Si 3 target.

[0044] Step 2. Prepare low-silicon silicon steel sheet substrate:

[0045] After removing the insulating layer with sandpaper, the low-silicon silicon steel sheet with the brand name of 35WW250 was cut into samples by wire. For the JCK-500 magnetron sputtering instrument, the size of the samples should be 40mm in length, 8mm in width, and 0.35mm in thickness. Clean with acetone (analytical grade) in an ultrasonic cleaner for use.

[0046] Step 3, magnetron sputtering process:

[0047] Put the cast target in step 1 into a magnetron sputtering apparatus as a cathode target, and install the low-silicon silicon steel substrate processed in step 2 on the anode plate of the magnetron sputtering ...

Embodiment 2

[0052] The preparation method of the gradient iron-silicon alloy with different silicon content distribution prepared in this implementation specifically includes the following steps:

[0053] Step 1. Prepare the target:

[0054] Preparation of Fe by melting and casting 5 Si 3 target.

[0055] Step 2. Low-silicon steel strip substrate sample preparation:

[0056] Remove the insulating layer of the 35WW250 low-silicon silicon steel sheet with sandpaper, and wire-cut it into a sample. For the JCK-500 magnetron sputtering instrument, the size of the sample should be 40mm in length, 8mm in width, and 0.35mm in thickness. (analytical pure) cleaned in an ultrasonic cleaner for use.

[0057] Step 3, magnetron sputtering process:

[0058] The target cast in step 1 is put into the magnetron sputtering apparatus as a cathode target, and the low-silicon silicon steel sheet processed in step 2 is installed on the anode plate of the magnetron sputtering apparatus. The gas pressure in...

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Abstract

The invention provides a gradient iron silicon alloy with different silicon (Si) content distribution and a preparation method of the gradient iron silicon alloy. The average silicon content of the alloy is 3.5 to 4.1 weight percent, the balance component is iron, the silicon content of the alloy is in gradient progressive reduction from the surface of the alloy to the heart of the alloy, and theprogressive reduction gradient of the silicon content is 0.045 to 0.11 weight percent in each 10 microns of silicon. The preparation method of the gradient iron silicon alloy with different Si content distribution comprises four steps, namely preparation of a target, preparation of a low silicon steel substrate, magnetron sputtering and diffusion treatment. The gradient iron silicon alloy with different silicon content, prepared by adopting the magnetron sputtering method, has relative low iron loss under medium and high frequencies; compared with a chemical vapor deposition (CVD) method and a thermal dipping method, the gradient silicon steel prepared by the magnetron sputtering method has the advantages of high purity, component controllability, good surface quality, strong process controllability, good environment friendliness and the like; and the method applied to the preparation of the gradient silicon steel belongs to exploratory brand-new research with development value.

Description

technical field [0001] The invention specifically relates to a gradient iron-silicon alloy with different silicon content distributions and a preparation method thereof. Background technique [0002] Silicon steel is a silicon-iron soft magnetic alloy with a very low carbon content (generally less than or equal to 0.02%), and the silicon content is generally 1.5 to 4.5 wt%. It is the most widely used soft magnetic alloy, occupies an important position in soft magnetic materials, and is the basic material for the development of electric power and telecommunications industries. Low iron loss and high magnetic induction under strong magnetic field are very important technologies for silicon steel. index. [0003] The silicon content in the silicon steel sheet has a great influence on the soft magnetic properties of its products. With the increase of the silicon content, the resistivity of the silicon steel sheet increases (the eddy current loss decreases), the magnetic permeab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00
Inventor 毕晓昉温钰侯崇强
Owner BEIHANG UNIV
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