N型鎂矽錫熱電材料之製程開發及模組研究

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姓名

詹季燁(Chi-Yeh Chan) 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開發及模組研究
(Process Innovation and Module Development of N-type Mg2(Si,Sn) Thermoelectric Materials)

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摘要(中)

近年來由於全球暖化以及能源資源枯竭的問題越來越嚴重，熱電發電作為減少這些問題影響的手段已引起關注。由於熱電轉換技術可以將熱能直接轉換為電能，因此廢熱得以轉換成電能。此外，它是一種乾淨的發電方法，可透過不排放二氧化碳的情況下發電，並不會造成環境的汙染。而影響熱電轉換技術的好壞主要取決於材料本身的熱電優值(ZT)，因此，如何有效的提升材料的ZT優值是目前研究的重要課題。
本研究透過矽摻雜反應，製作出N-type之奈米矽粉末，與鎂、錫粉末加以混合後冷壓成塊材，再用不同溫度及不同的放式做退火反應，形成鎂矽錫合金。本實驗將分析出熱電特性最好的製程，並使用其製程製備塊材來製作模組，並量測其熱電特性。

摘要(英)

In recent years, due to the growing problem of global warming and depletion of energy resources, thermoelectric power generation has attracted attention as a means of reducing the impact of these problems. Since thermoelectric conversion technology can convert thermal energy directly into electrical energy, waste heat can be converted into electrical energy. In addition, it is a clean power generation method that generates electricity without emitting carbon dioxide and does not cause environmental pollution. The influence of thermoelectric conversion technology depends mainly on the thermoelectric figure of merit (ZT) of the material itself. Therefore, how to effectively improve the ZT value of the material is an important topic of current research.
In this study, N-type silicon nanopowder was prepared by doping reaction. It is mixed with magnesium powder and tin powder, and then cold-pressed into ingots. Then, the ingots are annealed at different temperatures and different methods to form Mg2Si0.4Sn0.6 alloy. This experiment will analyze the process with the best thermoelectric characteristics, and use its process to prepare the block to make the module and measure its thermoelectric characteristics.

關鍵字(中)

★ 鎂矽錫合金
★ 熱電材料
★ 熱電模組
★ ZT優值

關鍵字(英)

論文目次

目錄
摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vii
表目錄 x
第一章、導論 - 1 -
1-1前言 - 1 -
1-2熱電效應 - 2 -
1-3研究動機 - 4 -
第二章、實驗方法與儀器 - 5 -
2-1球磨矽粉末 - 5 -
2-2混合粉末與摻雜 - 5 -
2-3冷壓成塊材 - 5 -
2-4 塊材退火環境 - 5 -
2-5組裝模組 - 6 -
2-6 量測儀器 - 6 -
2-6-1 電導率量測 - 6 -
2-6-2 Seebeck量測 - 7 -
2-6-3 熱導率量測 - 9 -
2-6-4 密度量測 - 9 -
2-6-5 熱擴散係數量測 - 10 -
2-6-6 比熱量測 - 11 -
2-6-7 熱電優值ZT( figure of merit) - 12 -
2-6-8 結構分析 - 12 -
2-6-9 晶體結構分析 - 13 -
2-6-10 模組電性分析 - 15 -
第三章、塊材製程與步驟 - 18 -
3-1前言 - 18 -
3-2塊材製程流程 - 19 -
3-3塊材製程步驟 - 20 -
3-3-1 矽粉末球磨 - 20 -
3-3-2 N-type摻雜 - 22 -
3-3-3 混和Mg、Si、Sn粉末 - 25 -
3-3-4 冷壓成塊材 - 25 -
第四章、製程開發與模組設計 - 27 -
4-1前言 - 27 -
4-2製程開發方向 - 28 -
4-3以Cr粉末及高溫膠帶抑制錫析出 - 29 -
4-4使用奈米鎂粉製作塊材 - 31 -
4-5使用低溫長時間進行退火 - 33 -
4-6高溫測試 - 34 -
4-6-1高溫測試-法1 - 35 -
4-6-2高溫測試-法2 - 37 -
4-6-2高溫測試-法3 - 37 -
4-7法2長時間燒結 - 41 -
4-7-1法2長時間燒結熱電量測 - 42 -
4-7-2法2長時間燒結結構分析 - 46 -
4-7-3法2長時間燒結XRD分析 - 48 -
4-8模組製作 - 50 -
4-8-1模組特性量測 - 51 -
第五章、結論 - 53 -
參考文獻 - 54 -

參考文獻

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指導教授

辛正倫(Cheng-Lun Hsin)

審核日期

2019-7-23

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