熱處理對電沉積Ni-Fe合金箔微觀結構和磁性能的影響

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基金項目:

國家自然科學基金資助項目(No.50674011)

Effects of heat treatment on the microstructure and magnetic properties of electrodeposited Ni-Fe permalloy foils

1. Key Laboratory of the Ministry of Education of China for Ecological and Recycle Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China

摘要: 對電沉積得到的Ni-Fe坡莫合金箔,在氫氣氣氛下進行退火處理,退火溫度分別為850,1000和1150℃,保溫時間均為5h.在掃描電子顯微鏡(SEM)和光學顯微鏡下觀察合金箔斷面和表面的顯微結構,利用XRD檢測合金箔的晶體結構,利用軟磁材料直流磁性測試儀裝置測得合金箔的直流磁特性.實驗結果表明:在850~1150℃溫度下熱處理時,退火溫度越高,合金箔的直流磁性能越好;經過退火熱處理后合金箔的晶粒明顯長大,而且合金箔存在明顯的擇優取向.
- 坡莫合金 /
- 退火處理 /
- 電沉積 /
- 磁性能 /
- 擇優取向
Abstract: Electrodeposited Ni-Fe permalloy foils was annealed under hydrogen atmosphere at 850, 1000 and 1 150 ℃ for 5 h, respectively. The microstructures of cross-sections and surfaces were observed by SEM and optical microscope, the crystal structure was studied by XRD, and the direct-current magnetic properties were measured by direct-current magnetic properties testing equipment. The results indicate that when the annealing temperature is between 850 and 1 150 ℃, the direct-current magnetic properties improve with increasing temperature. After annealing, the crystals of the permalloy foils grow up rapidly and present obvious preferred orientation.
- permalloy /
- annealing /
- electrodeposition /
- magnetic properties /
- preferred orientation