(Fe0.95Mn0.05)75Si10B15非晶合金晶化與磁性之研究

The Crystallization and Magnetic Properties of (Fe0.95Mn0.05)75Si10B15 Amorphous Alloy

陳俊明(Chun-Ming Chen)

指導教授 ： 陳適範 ； 林於隆

國立臺北科技大學/工程學院/材料科學與工程研究所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00250

摘要

本研究目的在於探討(Fe0.95Mn0.05)75Si10B15非晶合金薄帶，藉由不同熱處理條件觀察其結構變化對磁性之影響，使用填充氬氣之電弧熔煉爐進行(Fe0.95Mn0.05)75Si10B15合金薄帶母合金製備，接著以單輥熔射旋淬法製成薄帶，以XRD及SEM檢驗(Fe0.95Mn0.05)75Si10B15合金薄帶顯示為非晶結構，以DSC分析得知Tg=782K及Tx=816K。之後進行熱處理，其中熱處理為非恆溫退火之薄帶，以XRD分析薄帶發現在730K無結晶生成，而800K時有Fe3Si與Fe2MnSi生成，840K時有Fe3Si及Fe2MnSi、Fe2B生成。以TMA及VSM分析薄帶磁性質，飽和磁化量由1.437T降到1.37T，矯頑磁力由17.592A/m上升至1212.467A/m，居禮溫度由667K升至896K。而熱處理為恆溫退火之薄帶，以XRD分析發現在溫度800K恆溫10分鐘時有Fe3Si與Fe2MnSi生成，20分鐘有Fe3Si及Fe2MnSi、Fe2B生成，40分鐘有Fe3Si及Fe2MnSi、Fe2B生成。飽和磁化量由1.437T降至1.35T，矯頑磁力由17.592A/m上升至1340.623A/m，居禮溫度由667K升至891K。

關鍵字

非晶質 ； 晶化 ； 磁性

並列摘要

The effects of heat treatment on crystallization and magnetic properties of (Fe0.95Mn0.05)75Si10B15 amorphous alloy was investigated.The (Fe0.95Mn0.05)75Si10B15 ingot was arc-melted under argon atmosphere. A single roller melt-spinning method was employed to produce the alloy ribbon. The microstructure of alloy ribbon was shown to be amorphous thermal properties was measured by differential scanning calorimetry(DSC) the Tg=782K and Tx=816K.the heat treatment is different temperature holding 10min. the microstructure of alloy ribbons at 730K was shown to be amorphous, at 800K have Fe3Si、Fe2MnSi crystals to form. At 840K have Fe3Si、Fe2MnSi、Fe2B crystals to form. the saturation magnetization (Ms) of (Fe0.95Mn0.05)75Si10B15 alloy ribbons decreased from 1.437 T to 1.37 T with increasing holding temperature from no heat treatment to 840K.and the coercive force (Hc) increased from 17.592A/m to 1212.467A/m with increasing holding temperature from no heat treatment to 840K. and the curie temperature (Tc) increased from 667K to 896K with increasing holding temperature from no heat treatment to 840K.For the heat treatment is 800K at different holding time alloy ribbons. the microstructure of alloy ribbon at holding 10min have Fe3Si、Fe2MnSi crystals to form, At holding 20min have Fe3Si、Fe2MnSi、Fe2B crystals to form. At holding 40min have Fe3Si、Fe2MnSi、Fe2B crystals to form. the Ms decreased from 1.437 T to 1.35 T with increasing holding time from no heat treatment to 40min. Hc increased from 17.592A/m to 1340.623A/m with increasing holding time from no heat treatment to 40min. and the Tc increased from 667K to 891K with increasing holding time from no heat treatment to 40min.

並列關鍵字

Amorphous ； Crystallization ； Magnetic property

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