臺灣博碩士論文加值系統

本研究的目的在於研究非晶鐵基塊狀與厚帶。合金主成份為本實驗室之前所開發的Fe-Y-B系塊狀非晶材料，和Inoue的Fe-Si-B三元系統，進而添加不同元素並研究其結晶行為與軟磁性質。
在非晶塊狀方面，Fe69Y4B22Nb2Al3和Fe68Y4B22Nb2Al4 是此系列中具有最佳玻璃形成能力(GFA)的成分；其非晶棒材直徑可達4 mm，其飽和磁化量分別為118和114 emu/g，矯頑磁力分別為0.2和0.02 A/m。Fe70Y4B22Nb2Al2其GFA較低，非晶直徑為3 mm，但是軟磁性能佳，飽和磁化量為119 emu/g，矯頑磁力為0.07 A/m。
在非晶厚帶方面，我們成功製造出至少可形成160 μm和170 μm的非晶厚帶，成份分別為Fe71Y4B22Nb2Al1和Fe70Y4B22Nb2Al2，為一相當具有潛力的非晶厚帶材料。在Fe-Si-B系統方面，Nb的添加，能幫助合金噴出時，帶材的形成，進而改善帶材的品質。當Nb添加量為2%，成為Fe75Si9B14Nb2時，可維持到130 μm的非晶厚帶。
結合較傳統軟磁材料更為簡單的製程和更優良的軟磁性質，使得本論文中所開發出的新合金，在工業材料的應用上更有吸引力及潛力。

中文摘要.................................................................................................. I
Abstract.................................................................................................... II
誌謝..........................................................................................................III
總目錄..................................................................................................... IV
圖目錄...................................................................................................VIII
表目錄......................................................................................................XI
第一章 前言....................................................................................... 1
1-1 導論........................................................................................... 1
1-2 研究動機................................................................................... 2
1-3 合金設計理念........................................................................... 3
第二章 文獻回顧.............................................................................. 5
2-1 非晶態合金............................................................................... 5
2-1-1非晶態合金的發展......................................................... 5
2-1-2磁性非晶態合金............................................................. 6
2-2 形成非晶合金的要素............................................................... 7
2-2-1非晶形成能力的指標..................................................... 7
2-2-2三大經驗法則................................................................. 9
2-2-3固熔原子的影響.............................................................10
2-2-4共晶點.............................................................................11
2-3 非晶合金之製備方法...............................................................11
2-3-1濺射和蒸發沉積法.........................................................11
2-3-2化學沉積法和電沉積法.................................................12
2-3-3離子植入法.....................................................................12
2-3-4噴濺急冷和噴射沉積法.................................................13
2-3-5熔體急冷法.....................................................................13
2-4非晶態合金的性能....................................................................16
2-4-1非晶態合金的性能特點.................................................16
2-4-2非晶鐵芯的優缺點.........................................................17
2-4-3鐵芯的性能要求.............................................................19
第三章 實驗方法與步驟................................................................22
3-1 實驗流程...................................................................................22
3-1-1合金設計理念.................................................................22
3-1-2合金熔配.........................................................................26
3-1-3銅模鑄造法.....................................................................27
3-1-4熔液旋淬法.....................................................................27
3-2 分析與量測...............................................................................30
3-2-1 X-ray結構分析...............................................................30
3-2-2 DTA示差熱分析............................................................30
3-2-3 TEM微結構分析............................................................31
3-2-4 VSM磁性量測...............................................................32
3-2-5導磁率量測.....................................................................33
第四章 實驗結果與討論................................................................35
4-1不同Al含量對Fe-Y-B-Nb塊狀非晶的各項性質之影響........35
4-1-1 XRD相鑑定....................................................................35
4-1-2 DTA熱性質分析............................................................38
4-1-3 VSM磁性質分析...........................................................47
4-1-4 TEM微結構分析............................................................49
4-2不同Al含量對Fe-Y-B-Nb非晶厚帶GFA之影響.................51
4-2-1 XRD相鑑定....................................................................51
4-2-2導磁率量測.....................................................................55
4-3不同Nb含量對Fe-Si-B非晶厚帶各項性質之影響................57
4-3-1 XRD相鑑定....................................................................59
4-3-2 DTA熱性質分析............................................................63
4-3-3導磁率量測.....................................................................66
4-3-4 TEM微結構分析............................................................67
第五章 結論.......................................................................................69
5-1 鐵基塊狀非晶：Fe-Y-B-Nb-Al合金系統...............................69
5-2 鐵基非晶厚帶：Fe-Y-B-Nb-Al合金系統...............................69
5-3 鐵基非晶厚帶：Fe-Si-B-Nb合金系統....................................70
5-4 建議未來研究方向...................................................................70
參考文獻................................................................................................72

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