LaCeNi magnetic wave absorbing material and preparation method thereof

A technology of magnetic wave absorption and stoichiometric ratio, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of restricting the application of materials, lack of saturation magnetization and magnetic permeability, and failure to achieve light weight and strong absorption , to achieve the effect of good microwave absorption characteristics, good microwave absorption performance, and wide absorption frequency band
CN104451264AActive Publication Date: 2015-03-25GUILIN UNIV OF ELECTRONIC TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUILIN UNIV OF ELECTRONIC TECH
Publication Date
2015-03-25

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Abstract

The invention discloses a LaCeNi magnetic microwave absorbing material and a preparation method thereof. The stoichiometric proportions of a molecular formula of the magnetic wave absorbing material are as follows: 10.0%-16.7% of La, 0-6.0% Ce and 83.3% Ni. The LaCeNi magnetic microwave absorbing material is prepared by the following main steps: smelting La, Ce and Ni metals, of which the purities are greater than or equal to 99.90% as raw materials under argon protection; carrying out heat treatment on a cast ingot in vacuum at 800-1050 DEG C; quenching with ice water; and carrying out ball-milling to form powder after mechanically crushing. The LaCeNi magnetic microwave absorbing material has relatively excellent microwave absorbing property in a 2-18GHz of microwave band; when the thickness of a compound is 1.5mm, the minimal absorption peak can reach about 40.1dB; the LaCeNi alloy disclosed by the invention has the advantages of good wave absorbing property, wide absorbing frequency band, simple preparation process, good corrosion resistance and the like in the 2-18GHz of microwave band; and the LaCeNi magnetic microwave absorbing material disclosed by the invention is suitable for preparation of microwave absorbing products of requiring wide absorbing frequency band, good wave absorbing property and good corrosion resistance in the magnetic wave absorbing material.
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Description

technical field

[0001] The invention belongs to magnetic microwave absorbing materials, in particular to LaCeNi magnetic microwave absorbing materials and a preparation method thereof. Background technique

[0002] As electromagnetic waves in the GHz frequency range are widely used in various fields such as local area networks, mobile phones, and radar systems, electromagnetic radiation has caused serious electromagnetic pollution to the human living environment and brought great harm to people's lives. In order to solve the problems caused by electromagnetic wave radiation, people have carried out a lot of research work. Among them, magnetic wave-absorbing materials are used to convert electromagnetic wave energy into other forms of energy, so as to suppress electromagnetic wave radiation and interference, which has a good effect. . For example, applying magnetic absorbing materials on the surface of electronic products such as TVs, computers, and mobile communications can...

Claims

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