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| 研究生： |
陳崇益 |
|---|---|
| 論文名稱： |
熱電Sn-Se-Te材料之相平衡與液相線投影圖 Phase equilibria and liquidus projection of thermoelectric Sn-Se-Te alloys |
| 指導教授： | 陳信文 |
| 口試委員: |
張志溥
張立信 黃振東 |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工學院 - 化學工程學系 Department of Chemical Engineering |
| 論文出版年： | 2012 |
| 畢業學年度： | 100 |
| 語文別： | 中文 |
| 論文頁數： | 99 |
| 中文關鍵詞： | 熱電 、Sn-Se-Te 、相圖 、液相線投影圖 |
| 外文關鍵詞： | thermoelectric, Sn-Se-Te, phase diagram, liquidus projection |
| 相關次數： | 點閱：2 下載：0 |
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三元系統Sn-Se-Te是個相當重要的合金材料，如相轉變光記錄儲存裝置(optical recording)與遠紅外線裝置(infrared devices)皆是其重要的應用，而在近年來備受討論的熱電材料，三元系統Sn-Se-Te也是其中相當重要的熱電系統之一。為了瞭解此未知的合金系統，相圖便是相當重要的工具之一，本實驗配置了經長時間熱處理過後的合金樣品，用以建構出250℃(11個月)與500℃(2個月)之等溫截面圖，實驗結果確立了250℃與500℃下三元系統Sn-Se-Te之相平衡圖，發現250℃之SnTe相對元素Se之溶解度僅3%，與文獻略有差異(10at%)。另外也以經過淬冷固化的樣品建構出Sn-Se-Te三元系統之液相線投影圖，確立了各個首要析出相之邊界，發現主要有6個首要析出相區以及3個三元共晶點，E_1：L→SnSe+(Se,Te)+SnTe，溫度為400℃，組成為Se-15at%Sn-83%Te；E_2：L→(Se,Te)+SnSe+SnSe_2，溫度為420℃，組成為Se-3at%Sn-83at%Te，E_3：L→Sn+SnSe+SnTe，溫度為230℃。
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