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Is the application of amorphous nanocrystalline magnetic materials affected by environmental factors?
time:2025-02-12 14:37:11 Click count:64

The application of amorphous nanocrystalline magnetic materials will be affected by environmental factors. The following is a specific introduction: 

Ⅰ. Physical environment 

1. Temperature: 

The magnetic properties of amorphous nanocrystalline magnetic materials are more sensitive to temperature. In low temperature environments, the atomic thermal motion of the material weakens, the magnetic permeability may decrease, and the coercive force may increase, which will affect its magnetic transmission and energy conversion efficiency in low temperature environments. In high-temperature environments, the atomic thermal motion of the material may intensify, which may lead to changes in the magnetic domain structure, reducing its saturation magnetic induction strength and increasing magnetic loss, which in turn affects its working stability and service life in high-temperature environments. For example, in the aerospace field, the performance of amorphous nanocrystalline magnetic materials may be affected in extreme low temperatures in space and in high temperature environments when re-entering the atmosphere. 

2. Humidity:

A high humidity environment may corrode amorphous nanocrystalline magnetic materials, especially when there are defects or impurities on the surface of the material, moisture can easily invade the inside of the material, triggering chemical reactions, and leading to a decline in the performance of the material. In addition, changes in humidity may also cause expansion or contraction of the material, affecting the consistency of its dimensional stability and magnetic properties. 

3. Mechanical stress: 

In practical applications, if amorphous nanocrystalline magnetic material is subject to mechanical stress, such as tensile, compression, bending, etc., it will cause changes in the magnetic domain structure of the material, which will reduce the magnetic permeability and bend Increased force. For example, in the engine compartment of a car, components made of amorphous nanocrystalline magnetic materials may be subject to vibration and impact, which will affect their magnetic properties. 

Ⅱ. Electromagnetic environment 

1. External magnetic field:

 Under the action of a strong external magnetic field, the magnetic domain structure of amorphous nanocrystalline magnetic materials will be rearranged, which may lead to changes in performance parameters such as saturated magnetic induction strength and magnetic permeability. When using amorphous nanocrystalline magnetic materials near some strong magnetic field devices, the impact of the external magnetic field on its performance needs to be considered to ensure its normal operation. 

2. Electromagnetic radiation:

In a high-frequency electromagnetic radiation environment, amorphous nanocrystalline magnetic materials may cause eddy current loss and hysteresis loss to increase, reducing their energy conversion efficiency. For example, in places with strong high-frequency electromagnetic radiation such as communication base stations, the amorphous nanocrystalline magnetic materials used need to have good electromagnetic radiation resistance.

Ⅲ. Chemical environment 

1. Corrosive gases:

 In some industrial environments or special occasions, corrosive gases exist, such as sulfur dioxide, chlorine, etc. These corrosive gases may react chemically with amorphous nanocrystalline magnetic materials, destroying the surface structure and internal components of the material, resulting in a degradation of its magnetic properties. 

2. Contact of chemical substances: 

When amorphous nanocrystalline magnetic materials come into contact with certain chemical substances, chemical reactions or physical adsorption may occur, changing the surface properties and magnetic properties of the material. For example, in the chemical industry, if amorphous nanocrystalline magnetic materials come into contact with chemical substances such as organic solvents, acid and alkali solutions, it may affect its performance and service life.


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