三元熱電系統Ag-Sn-Te之相平衡與液相線投影圖

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研究生：	邱國峻
論文名稱：	三元熱電系統Ag-Sn-Te之相平衡與液相線投影圖 Phase equilibria and liquidus projection of thermoelectric Ag-Sn-Te alloys
指導教授：	陳信文
口試委員:	張志溥黃振東張立信
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：	141
中文關鍵詞：	熱電材料、液相線投影圖、相平衡圖
外文關鍵詞：	Ag-Sn-Te
相關次數：	點閱：3 下載：0
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Ag-Sn-Te三元系統具有熱電應用上之重要性，尤其Ag2Te為重要的熱電材料。本研究探討Ag-Sn-Te三元系統的液相線投影圖與500℃恆溫相平衡圖。液相線投影圖的實驗方法為依所需比例秤取適量純元素Ag、Sn、Te，總重約1g。再將秤取的元素放入石英管，抽真空後封管。放入980℃高溫爐熱處理兩天熔融均勻後放入水中淬冷；而恆溫相平衡的實驗步驟類似液相線，差別在980℃高溫爐熱處理兩天熔融完之後改放入500℃爐子長時間放置約11個月等待合金達相平衡。利用SEM、EDX、EPMA對液相線與相平衡的合金進行金相與組成分析。Ag-Sn-Te三元系統的液相線投影圖存在11個首要析出相，分別為Sn、Ag、Te、ε(Ag3Sn)、ξ(Ag4Sn)、γAg2Te、βAg2Te、Ag1.9Te、βAg5Te3、SnTe以及一個三元相AgSnTe2。此外在富銀區存在miscibility gap。利用DTA得到的升溫曲線測出析出相生成溫度以及搭配二元相圖預估液相線投影圖在固化時的走向來研究固化路徑。Ag-Sn-Te系統500℃恆溫相平衡圖有4個三相區、9個兩相區以及六個單相區。

摘要 ........................................................................................................................... Ⅰ
目錄 .......................................................................................................................... Ⅱ
圖目錄...................................................................................................................... Ⅴ
表目錄.....................................................................................................................XV
一、 前言 ............................................................................................................... 1
二、文獻回顧 ....................................................................................................... 6
2-1相圖 .............................................................................................................................. 6
2-1-1 Ag-Sn二元相圖 .................................................................................... 6
2-1-2 Ag-Te二元相圖 ..................................................................................... 6
2-1-3 Sn-Te二元相圖 ..................................................................................... 7
2-2 Ag-Sn-Te三元系統相平衡圖 .................................................................... 7
2-3 Ag-Sn-Te三元系統液相線投影圖 ............................................................ 8
三、實驗方法 ..................................................................................................... 18
3-1 Ag-Sn-Te三元液相線投影圖 .................................................................. 18
3-1-1合金製備 ......................................................................................................... 18
3-1-2合金分析 ......................................................................................................... 19
3-1-3熱差分析儀 .................................................................................................... 21
III
3-2 Ag-Sn-Te三元系統500℃相平衡 ............................................................ 21
四、結果與討論 ......................................................................................................... 23
4-1 Ag-Sn-Te三元液相線投影圖 ..................................................................... 23
4-1-1 首要析出相: Ag3Sn ...............................................................................23
4-1-2 首要析出相: SnTe ...................................................................25
4-1-3 首要析出相: Te ......................................................................27
4-1-4 首要析出相: Ag5Te3、Ag1.9Te ..............................................30
4-1-5 首要析出相: AgSnTe2 ............................................................32
4-1-6 首要析出相: Sn........................................................................33
4-1-7 首要析出相: Ag .....................................................................34
4-1-8 miscibility gap區-Ag2Te、Ag4Sn.........................................34
4-2 Ag-Sn-Te相平衡..........................................................................37
4-2-1 SnTe+Ag4Sn兩相區............................................................37
4-2-2 SnTe+Ag2Te兩相區...........................................................................38
4-2-3 Ag4Sn+Ag2Te兩相區...........................................................................38
4-2-4 Ag +Ag2Te兩相區.................................................................................39
4-2-5 Liquid (Sn端)+SnTe兩相區...........................................................39
IV
4-2-6 Liquid (Te端)+SnTe兩相區...........................................................40
4-2-7 Ag4Sn+SnTe+Liquid三相區..............................................................41
4-2-8 Ag4Sn+SnTe +Ag2Te三相區..........................................................41
4-2-9 SnTe單相區...........................................................................................42
4-2-10 Liquid(Sn端)單相區............................................................................42
4-2-11 Liquid(Te端)單相區............................................................................43
4-3 熱分析...............................................................................................................128
4-3-1 L=Te+Ag5Te3+AgSnTe2.............................................................................128
4-3-2 L=Sn+Ag3Sn+SnTe ....................................................................................129
4-3-3 L+ SnTe =Te+ AgSnTe2 .............................................................................129
4-3-4 DTA結論 ..................................................................................................... 130
五、結論 .............................................................................................................. 138
六、參考文獻 ................................................................................................... 139
                                

1. G. S. Nolas, J. Sharp, H. Goldsmid, "Basic Principles and New Materials Developments", Springer, (2001)

2. T. M. Tritt, "Recent Trends in Thermoelectric Materials Research in Semiconductors and Semimetals", Academic Press, Vol. 69–71, (2001)

3. D. M. Rowe, C. M. Bhandari, "Modern Thermoelectrics",pp.164,(1983)

4. M. S. El-Genk, H. H. Saber, T. Caillat , "Energy Conversion and Management", Vol. 44 , pp. 1755-1772, (2003)

5. R. K. Willardson, A. C. Beer, T. M. Tritt, "Recent Trends in Thermoelectric Materials Research", Semiconductors and Semimetals, vol. 69, Chp.1,(2001)

6. J. Fairbanks, "Thermoelectric Applications in Vehickes Status", Department of Energy, (2008)

7. R.Chein, G. Huang, "Thermoelectric cooler application in electronic cooling" , Applied Thermal Engineering, Vol.24, pp. 2207-2217,(2004)

8. E. I. Rogacheva, "Non-stoichiometry and properties of ternary semiconductor phases of variable composition based on IV-VI compounds", JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Vol. 66(11), pp. 2104-2111, (2005)

9. J. Wu, J. Yang, H. Zhang, J. Zhang, S. Feng, M. Liu, J. Peng, W. Zhu, and T. Zou, "Fabrication of Ag-Sn-Sb-Te based thermoelectric materials by MA-PAS and their properties", JOURNAL OF ALLOYS AND COMPOUNDS, Vol. 507(1), pp. 167-171, (2010)

10. Androulakis, "Coexistence of large thermopower and degenerate doping in the nanostructured material Ag0.85SnSb1.15Te3”, Chem.Mater. ,(2006)

11. T.P. Hogan, A.D. Downey, J. Short , et al., "Progress on the fabrication and characterization of high efficiency thermoelectric generators", Materials and Technologies for Direct Thermal-to-Electric Energy Conversion, Vol. 886, pp. 487-492 ,(2006)

12. H.-J. Liu, Y.-G. Yan, X.-F.Tang , et al, "Preparation and thermoelectric properties of p-type Ag-0.5(Pb8-xSnx)In0.5Te10 compounds", ACTA PHYSICA SINICA. ,Vol. 56 (12), pp.7309-7314 , (2007)

13. V. A. Kulbachinskii , A. V. G. Kytin, P. M. Tarasov, "Fermi surface and thermoelectric power of (Bi1-xSbx)2Te3 single crystals doped by Ag, Sn, Ga, XXV International Conference on Thermoelectrics, pp.459-464 ,(2006)

14. H. -J. Wu, S.-W.Chen, "Microstructures and liquidus projection of the ternary Ag–Sb–Te system", Journal of Alloys and Compounds, Vol. 509 , pp656 -668 , (2011)

15. A. J. Minnich, M. S. Dresselhaus, Z. F. Ren , G. Chen , "Bulk nanostructured thermoelectric materials: current research and future prospects",Energy & Environmental Science, Vol.2, pp.466-479 ,(2009).

16. http://en.wikipedia.org/wiki/Thermoelectric_effect

17. I. Karakaya , W.T.Thompson , "The Ag-Sn (Silver-Tin) System"Binary Alloy Phase Diagram , No.1, pp. 94-97,(1991)

18. I. Karakaya ,W.T.Thompson , "The Ag-Te (Silver-Tellurium) System", Journal of Phase Equilibria , Vol.12 ,No.1,pp.56-63, (2010)

19. R.N. Honea , American Mineralogist ,Vol. 49 , pp.325-338, (1964)

20. F.C. Kracek ,C.J. Ksanda, "Phase relations in the system tellurium- silver", Transactions, American Geophysical Union, Vol.363, (1940)

21. F.C. Kracek ,C.J. Ksanda , L.J. Cabri , " Phase relations in the silver-tellurium system",American Mineralogist,Vol.51, pp14-28,(1966)

22. V. Koern, " The binary alloy system silver-tellurium "
,Naturwissenschaften , Vol.27, pp. 432, (1939)

23. R.-C. Sharma ,Y.-A.Chang , "Sn-Te (Tin-Tellurium) ", Bulletin of Alloy Phase Diagrams , Vol.7,No.1 , pp.72-80 , (1986)

24. K. Hsieh, M.-S. Wei,Y.-A. Chang, "Thermodynamic Analysis Of The Tin-Tellurium System And Calculation Of The Phase Diagram", Z. Metallkd. , Vol.74, pp. 330-337, (1983)

25. F. Romermann,R. Blachnik, "The excess enthalpies of liquid Ag-Ge-Te and Ag-Sn-Te alloys", Zeitschrift fuer Metallkunde, Vol. 92,No.4, pp. 336-344, (2001)

26. D. M.Wamwangi, "Application of p electron theory to predict new materials for rewritable optical recording",pp141-143, (2004)

27. D. M.Wamwangi, "Application of p electron theory to predict new materials for rewritable optical recording", pp.129-135, ( 2004)

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