N型鎂矽錫熱電材料之製程改良及其焊料之研究

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姓名

鍾尚哲(Sheng-Zhe,Zhong) 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製程改良及其焊料之研究
(Process Innovation of N-type Mg2(Si,Sn) Thermoelectric Materials and Solder)

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摘要(中)

近年來全球都在尋找替代能源和綠能發電，而熱電材料的出現為無汙染、高效率發電和製冷晶片提供了希望，因此熱電發電引起了許多關注。熱電材料是一種能將電能與熱能交互轉換的材料，此種材料能夠在足夠的溫差下產生電動勢，達到以熱生電的現象。相反的，也可以提供電流給它產生吸熱或放熱的效應，達到生熱與製冷的效果。判斷熱電材料轉換效率的好壞是依靠熱電優值(ZT)，所以如何提升ZT優值是我們該探討研究的。
本文研究N型 Mg2 (Si,Sn) 熱電材料。透過矽摻雜銻反應製作出N-type之奈米矽粉末，與鎂、錫、铋粉末混合後冷壓成塊材，退火後形成鎂矽錫合金，再測試添加不同比例的錳矽化合物來改善其特性，找出最佳特性參數來製作模組，並量測其熱電特性。我們研究結果表明以Mg2.2(Si,Sn)+10% Mn5Si3 所得到的N型熱電材料在室溫~200°C之間具有0.3~0.5的ZT值。
本文研究單一輸出試片是使用銅片為電極，Mg2Sn為電極黏著材料，並一次性組裝電極去長時間退火。單一輸出試片進行熱電性能量測，最大輸出功率為1.0108 (μW)。

摘要(英)

In recent years, the world has been looking for alternative energy sources and green power generation. The emergence of thermoelectric materials provides hope for pollution-free, high-efficiency power generation and cooling chips. Therefore, thermoelectric power generation has attracted a lot of attention. A thermoelectric material is a material that can convert electrical energy and thermal energy interactively. This material can generate electromotive force under a sufficient temperature difference to achieve the phenomenon of generating electricity by heat. Conversely, it can also be supplied with current to produce heat absorption or heat release effects to achieve the effects of heat generation and cooling. Judging the conversion efficiency of thermoelectric materials depends on the thermoelectric figure of merit (ZT), so how to improve the ZT figure of merit is what we should discuss.
This paper studies N-type Mg2 (Si,Sn) thermoelectric materials. The N-type nanosilicon powder is produced through the reaction of silicon-doped antimony, mixed with magnesium, tin, and bismuth powder and cold pressed into a block, annealed to form a magnesium-silicon-tin alloy, and then tested by adding different proportions of manganese-silicon compounds to Improve its characteristics, find the best characteristic parameters to make a module, and measure its thermoelectric characteristics. Our research results show that the N-type thermoelectric material obtained with Mg2.2(Si,Sn)+10% Mn5Si3 has a ZT value of 0.3-0.5 between room temperature to 200°C.
In this paper, the single-output test sample uses copper as the electrode, Mg2Sn as the electrode adhesive material, and the electrode is assembled at one time for long-time annealing. The single output test sample is used for thermoelectric performance measurement, and the maximum output power is 1.0108 (μW).

關鍵字(中)

★ 鎂矽錫錳矽熱電材料

關鍵字(英)

論文目次

摘要 I
Abstract II
目錄 III
圖目錄 VI
表目錄 IX
第1章、緒論 1
1-1 前言: 1
1-2 熱電材料簡介 2
1-2-1 常見熱電材料: 2
1-2-2 熱電市場分析 3
1-2-3 熱電材料的應用 4
1-3 基礎理論 6
1-3-1 熱電效應: 6
1-3-2 熱電優值與轉換效率: 8
1-4 文獻回顧 9
1-4-1 鎂矽錫合金材料簡介: 9
1-4-2 錳矽化合物簡介: 12
1-4-3 焊料合金材料簡介 13
1-5 研究動機: 14
第2章、實驗儀器 17
2-1 量測儀器: 17
2-1-1 電導率量測: 17
2-1-2 Seebeck 量測: 18
2-1-3 密度量測 20
2-1-4 熱擴散係數量測 20
2-1-5 比熱量測: 22
2-1-6 熱導率計算: 23
2-1-7 結構分析: 23
2-1-8 晶體結構分析: 24
2-1-9 單一輸出電性量測 25
第3章、實驗方法與流程 27
3-1 前言 27
3-2 實驗開發及流程: 28
3-3 塊材製備 30
3-3-1 N-type 矽粉摻雜: 30
3-3-2 N-type Mn5Si3 粉末製作: 31
3-3-3 混合Mg、Sn、Si、Bi以及Mn5Si3: 34
3-3-4 冷壓成塊材: 34
3-3-5 高溫燒結 35
3-3-6 高溫退火 35
3-4 單一輸出製作: 36
第4章、實驗結果與討論 37
4-1 測試不同Mg之比例 37
4-2 測試不同Mn5Si3之比例 39
4-2-1 Mg2Si0.4Sn0.6添加各比例Mn5Si3 39
4-2-2 Mg2.2Si0.4Sn0.6添加各比例Mn5Si3 43
4-3 測試不同之退火氣氛對zt的影響 48
4-4 單一輸出測試與量測結果 51
第5章、結論與未來展望 55
參考文獻 56

參考文獻

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指導教授

辛正倫(Cheng-Lun,Hsin)

審核日期

2021-8-10

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