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研究生:陳俊明
研究生(外文):Chun-Ming Chen
論文名稱:(Fe0.95Mn0.05)75Si10B15非晶合金晶化與磁性之研究
論文名稱(外文):The Crystallization and Magnetic Properties of (Fe0.95Mn0.05)75Si10B15 Amorphous Alloy
指導教授:陳適範陳適範引用關係林於隆
口試委員:薄慧雲唐自標
口試日期:2011-06-28
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:材料科學與工程研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:74
中文關鍵詞:非晶質晶化磁性
外文關鍵詞:AmorphousCrystallizationMagnetic property
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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。

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.

摘 要 I
ABSTRACT II
誌 謝 IV
目 錄 V
圖 目 錄 VIII
表 目 錄 XII
第一章 前言 1
1.1 研究簡介 1
1.2 研究動機 4
第二章 文獻回顧與理論基礎 6
2.1 歷史背景 6
2.2 非晶質合金之製造方式 10
2.3 非晶質合金之形成條件 11
2.3.1 經驗法則 11
2.3.2 熱力學觀點 13
2.3.3 結晶觀點 13
2.3.4 非晶質之平衡 14
2.4 非晶質合金玻璃形成能力之參數 15
2.4.1 過冷液態區 16
2.4.2 簡約玻璃轉化溫度 17
2.4.3 深共晶點 18
2.4.4 參數γ 19
2.4.5 臨界冷卻速率、臨界尺寸厚度及最大尺寸厚度 20
2.4.6 γm值 22
2.5 非金質合金之特性 22
2.5.1 機械性質 22
2.5.2 抗蝕性質 24
2.5.3 軟磁性質 25
2.6 磁性質理論 26
2.6.1 磁性之分類 26
2.6.2 磁區結構與磁滯環 28
2.6.3 磁晶各異向性 30
2.6.4居禮溫度 30
2.6.5 非晶質之軟磁性 31
第三章 實驗流程與方法 32
3.1 實驗流程 32
3.2 合金薄帶之製備 33
3.2.1 合金成份配製 33
3.2.2 合金熔煉 33
3.2.3 製作合金薄帶 34
3.3 試片結構與表面分析 35
3.3.1 X光繞射儀 35
3.3.2 掃描式電子顯微鏡 36
3.3.3光學顯微鏡 36
3.4 熱性質分析 37
3.4.1 示差掃瞄熱分析儀 37
3.5 熱處理 38
3.5.1 石英封管 38
3.5.2 高溫爐 39
3.6磁性分析 40
3.6.1 熱磁分析儀 40
3.6.2 振動樣品磁力儀 42
第四章 結果與討論 44
4.1 試片外觀之觀察 44
4.1.1 母合金鑄錠之外觀 44
4.1.2 合金薄帶之外觀 45
4.1.3 石英封管後外觀 46
4.2 合金薄帶顯微結構分析 47
4.3 合金薄帶熱處理結構分析 49
4.3.1 非恆溫退火薄帶結構分析 50
4.3.2 恆溫退火薄帶結構分析 51
4.4合金薄帶熱處理顯微組織觀察 52
4.4.1非恆溫退火薄帶表面 52
4.4.2恆溫退火薄帶表面 55
4.5合金薄帶熱處理前後磁性分析 58
4.5.1合金薄帶熱處理前後VSM分析 58
4.5.1.1 非恆溫退火薄帶 58
4.5.1.2 恆溫退火薄帶 62
4.5.2合金薄帶熱處理前後TMA分析 66
4.5.2.1 非恆溫退火薄帶 66
4.5.2.2 恆溫退火薄帶 67
第五章 結論 68
參考文獻 69


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