N型鎂矽錫熱電材料之接觸金屬及模組製作

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姓名

盧俊廷(Chun-Ting Lu) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

N型鎂矽錫熱電材料之接觸金屬及模組製作
(Fabrication of Contact Metals and Modules for N-type Mg2(SiSn) Thermoelectric Materials)

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摘要(中)

隨著時代變遷，AI及電動車迅速發展，伴隨能源大量消耗，石化能源日益減少及環保意識抬頭，人們開始積極探索替代能源，可再生能源也受到重視。熱電材料是一種可再生能源的應用，擁有舉足輕重地位。熱電元件能將熱能直接轉換為電能，或反向將電能轉換為熱能。這種雙向能量轉換的能力使其在能源回收、冷卻系統以及可再生能源應用中展現了巨大的潛力。
本實驗利用N型Mg2(SiSn)熱電材料製作出PN元件並且使40對PN元件焊接成大型熱電模組。Mg2Si混合固定比例Mg2Sn，透過粉末摻雜、混合、放上接觸金屬(焊接用)、冷壓成型、高溫燒結等步驟製作出N型Mg2(SiSn)熱電元件，同時在此階段進行電性量測和分析，進而確定粉末摻雜配比及合適焊接的接觸金屬。再來與實驗室同學研究的P型Mg2(SiSn)熱電塊材搭配，組成單對PN型熱電元件。最後我們選定擁有優異熱電性能的PN元件，大量製作單對PN元件，焊接使其串接成大型模組。

摘要(英)

As technology advances, AI and electric vehicles are rapidly developing. The increasing energy consumption and depletion of fossil fuels, coupled with rising environmental awareness, have spurred interest in alternative energy sources, particularly renewable energy. Thermoelectric materials, which can convert heat into electricity and vice versa, play a critical role in this field, offering potential in energy recovery, cooling systems, and renewable energy applications.
This experiment builds on previous research with N-type Mg2(SiSn) thermoelectric materials. We prepared N-type thermoelectric components by mixing a fixed proportion of Mg2Si with Mg2(SiSn), followed by powder doping, mixing, placing contact metals, cold pressing, and high-temperature sintering. Electrical measurements and analyses were conducted to determine the optimal doping ratios and contact metals. These N-type components were then paired with P-type Mg2(SiSn) materials to form single PN-type thermoelectric devices. Finally, we selected the best-performing PN devices and produced them in large quantities. These devices were welded into a large-scale module, achieving an output voltage of 1V.

關鍵字(中)

★ 鎂矽錫
★ 熱電材料
★ 熱電轉換效應
★ 熱電優值
★ 粉末冶金製程
★ 熱電模組

關鍵字(英)

論文目次

摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vii
表目錄 xii
第一章緒論 1
1-1 前言 1
1-2 熱電材料發展歷史 1
1-3 熱電特性的前景與應用 4
第二章、熱電特性與文獻回顧 5
2-1 前言 5
2-2 熱電特性與理論 5
2-2-1 熱電優值(ZT) 5
2-2-2 Seebeck Effect 7
2-2-3 Peltier Effect 8
2-2-4 Thomson Effect 9
2-2-5 熱電模組功率計算 10
2-3 文獻回顧 11
2-3-1 Mg2(SiSn)晶體結構 11
2-3-2 Mg2(SiSn)熱電材料 12
2-3-3 Mg2(SiSn)微量Bi摻雜 14
2-3-4 常見接合方法 16
2-3-5 PN熱電元件結構 16
2-4 實驗動機 18
第三章、量測方式 19
3-1 量測儀器 19
3-1-1 Seebeck量測 19
3-1-2 電導率量測 21
3-1-3 密度量測 23
3-1-4 熱擴散率量測 24
3-1-5 比熱量測 25
3-1-6 熱傳導率量測 26
3-1-7 材料晶體特性分析 27
3-1-8 材料微觀分析 29
3-1-9 模組電性量測 30
第四章、實驗步驟 33
4-1 前言 33
4-2 實驗步驟流程圖 34
4-3 實驗步驟 35
4-3-1 Si(Sb)的製程 35
4-3-2 Mg2Si的製程 40
4-3-3 Mg2(SiSn)的製程 45
4-3-4 元件的製作和測試 48
4-3-4-1 元件上下橋接結構 48
4-3-4-2 元件平行並排結構 51
4-3-4-3 元件立起前後串接結構 53
4-3-5 模組的製作 57
第五章、實驗結果與討論 62
5-1 前言 62
5-2 焊料與金屬接觸的測試 63
5-2-1 WU-4焊料與金屬焊接 63
5-2-2 鋅鋁銅焊料與金屬焊接 64
5-3 高鎂矽金屬接觸測試結果 64
5-4 熱電模組實驗結果討論 67
5-4-1 模組上下橋接的結構 67
5-4-2 模組平行並排的結構 69
5-4-3 模組立起前後串接的結構 71
5-4-4 大型熱電模組電性分析 74
5-5 Mg2(SiSn)試片熱傳導率計算 86
5-6 Mg2(SiSn)試片ZT值計算 87
第六章、結論與未來展望 88
參考文獻 90

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指導教授

辛正倫(Cheng-Lun Hsin)

審核日期

2024-7-23

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