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Wave absorbing flaky powder and preparation process thereof

A flake powder, preparation process technology, applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., can solve the problems of low magnetic permeability, large magnetic loss, small magnetic loss, etc.

Inactive Publication Date: 2017-06-20
都江堰市金石宸磁性材料厂 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem that the existing sendust flake powder has low magnetic permeability and large magnetic loss, the present invention provides a kind of sendust flake powder with large magnetic permeability and small magnetic loss and its preparation method

Method used

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Experimental program
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Effect test

Embodiment Construction

[0015] The present invention is achieved through the following technical solutions:

[0016] A. The wave-absorbing flake powder is characterized in that the content of Fe in the sendust aluminum alloy powder (80 mesh-200 mesh) is the balance, the content of the Si is 9-10mol%, and the content of the Al The content is 5-6mol%, the content of c is <0.01mol%, the content of Mn is <0.1mol%, the content of P and S is <0.01mol%,

[0017] B, the preparation process of the microwave-absorbing material described in claim, is characterized in that, this method comprises the following steps:

[0018] a. Add the alloy powder whose metal material is sendust to solvent and lubricant (one of water, alcohol, carbonic acid solution, and grinding liquid), and mix it with a material ratio of 1:3-15, and the additive is 1:0.:0001- 1 (one of sucrose or fatty acid), carry out wet grinding; the speed (gradually increased) is 50-290r / min, the time is 2-12h, and the cooling time is 2-12h. Promptly o...

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PUM

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Abstract

The invention discloses a wave absorbing flaky powder and the preparation process thereof. The preparation process of the wave absorbing flaky powder comprises: powder milling, drying, sintering or reducing annealing, and packaging after crushing. The characteristics of the obtained target product comprise the following items: having a high permeability (real part 30 to 180); the powder is flaky; the apparent density is 0.2 to 0.8; and the D50 is 20 to 60. The wave absorbing flaky powder is mainly used in an anti-metal electronic tag, mobile payment, and anti-electromagnetic interference and so on.

Description

technical field [0001] The invention belongs to the field of metal soft magnetic functional materials. In particular, it relates to a wave-absorbing material for an antenna and a preparation process thereof. Background technique [0002] The absorbing material is a functional composite material mainly absorbing electromagnetic waves, which eliminates the back and forth reflection of electromagnetic waves in the shielding cavity, reduces the interference of clutter on its own equipment, and effectively prevents electromagnetic radiation from harassing and harming surrounding equipment and personnel. An advanced means of eliminating electromagnetic wave pollution. Applying wave-absorbing materials to electronic equipment can absorb leaked electromagnetic radiation and achieve the purpose of eliminating electromagnetic interference. [0003] 1. It is applied to RFID to effectively solve the metal interference in HF (13.56MHz) RFID system and improve the sensitivity of the ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/147H01F41/00H01Q17/00
CPCH01F1/14791H01F1/14775H01F41/00H01Q17/002
Inventor 邓洪泉邓朝文
Owner 都江堰市金石宸磁性材料厂
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