论文部分内容阅读
研究了环境温度对热处理后铁基纳米晶磁芯磁导率的影响。结果表明,厚度不同的样品经热处理后均存在一个频率小区域,在这个小区域内工作的磁芯,其磁导率不受环境温度的影响。工作频率低于此频率区域时,磁芯的磁导率随环境温度升高而降低,当环境温度由30℃升到120℃时,磁导率在1 kHz时降幅最大;工作频率高于这一频率区域时,磁芯的磁导率随环境温度的升高而略有升高。
The effect of ambient temperature on the magnetic permeability of iron-based nanocrystalline cores after heat treatment was investigated. The results show that the samples with different thicknesses have a small frequency region after heat treatment. The magnetic permeability of cores operating in this small area is not influenced by the ambient temperature. When the operating frequency is lower than this frequency range, the magnetic permeability of the magnetic core decreases with the increase of the ambient temperature. When the ambient temperature rises from 30 ℃ to 120 ℃, the permeability decreases sharply at 1 kHz; the operating frequency is higher than this In a frequency region, the magnetic permeability of the core rises slightly with increasing ambient temperature.