跳到主要內容

臺灣博碩士論文加值系統

(3.235.120.150) 您好!臺灣時間:2021/08/06 00:39
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:羅鴻文
研究生(外文):hong-wen lo
論文名稱:添加微量氧化鐵對鐠系氧化鋅變阻器性質與微結構之影響
論文名稱(外文):Effects of Fe2O3 addition on the microstructure and electrical properties of ZnO-Co3O4-Pr6O11-based varistors
指導教授:向性一
指導教授(外文):Hsing-I Hsiang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:資源工程學系碩博士班
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:91
中文關鍵詞:變阻器氧化鋅氧化鐵
外文關鍵詞:varistorZnOFe2O3
相關次數:
  • 被引用被引用:0
  • 點閱點閱:129
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本研究以傳統固態反應法製備氧化鋅變阻器ZnO-Pr6O11-Co3O4,並探討添加微量氧化鐵(Fe2O3)對微結構與變阻性質之影響。由顯微結構觀察發現添加適量的Fe2O3時可以使PrOx均勻的分佈在晶界上,此現象能夠促使氧離子更均勻的吸附於晶界上進而提升變阻性質。此外,實驗中藉由阻抗分析計算晶界能障高度,結果顯示當氧化鐵添加量為0.001mol%時,能夠使晶界能障高度上升,有助於提升變阻性質。但若添加量增加至0.005mol%時,大量的PrOx則會富集在triple point,且生成少量的二次相ZnFe2O4,而使變阻性質劣化。
In this study, ZnO-Pr6O11-Co3O4 based varistors were prepared using a conventional solid-state reaction and sintering process. The effects of Fe2O3 addition on the microstructure and varistor properties were investigated. PrOx phases were found to locate at grain-boundaries uniformly as proper amount of Fe2O3 was added. This will promote the diffusion and chemisorptions of excess oxygen ions at the grain-boundaries, which enhances the varistor property. The energy barrier heights of the grain-boundary for the samples were measured using impedance spectroscopy and observed that when the Fe2O3 addition concentration was increased to 0.001mol%, the barrier height can be increased, which improved the varistor behavior. However, as the addition concentration of Fe2O3 was increased above 0.005mol%, most PrOx phase(s) were found to locate at the triple points, and form the second phase, ZnFe2O4, which resulted in the deterioration of the varistor property.
摘要 I
目錄 III
表目錄 V
圖目錄 VI
第一章、研究目的 1
第二章、前人研究與基礎理論 2
2.1 變阻器 2
2.1.1 ZnO結構簡介 2
2.1.2 變阻器之功能與應用 4
2.1.3 變阻器性質與機構 8
2.1.3.1雙重蕭基特能障(Double Schottky barrier) 8
2.1.3.2 非歐姆特性(non-Ohmic characteristic) 10
2.2 添加劑對ZnO變阻器性質影響 14
2.3 晶界參數 21
2.4 阻抗分析法 24
第三章、實驗步驟 34
3.1 實驗藥品 34
3.2 實驗流程 35
3.2.1粉末製備 36
3.2.2試片製備 36
3.3材料特性分析 37
3.3.1 相鑑定 37
3.3.2密度量測 37
3.3.3 顯微結構觀察 38
3.3.4 變阻特性分析 38
3.3.5 阻抗分析 39
3.3.7 TEM顯微結構觀察 39
第四章、結果與討論 41
4.1添加氧化鐵對燒結體密度之影響 41
4.2添加氧化鐵對結晶相之影響 42
4.3添加氧化鐵對顯微結構之影響 49
4.3添加氧化鐵對氧吸附之影響 62
4.4添加氧化鐵對電性之影響 68
4.4.1變阻性質 68
4.4.2 阻抗性質 76
第五章、結論 88
參考文獻 89
1.F. OBA, I. TANAKA and H. ADACHI, “Effect of Oxidation on Chemical Bonding around 3d Transition-Metal Impurities in ZnO”, Jpn. J. Appl. Phys. 38, 3569-3575(1999)
2.T. K. Gupta, “Application of Zinc Oxide Varistors”, J. Am. Cerum. Soc., 73, 1817-1840 (1990)
3.國立編譯館、邱碧秀,「電子陶瓷材料」,徐氏基金會出版。197-239(1988)
4.吳朗,「電子陶瓷-半導體」,全欣資訊。169-213(1994)
5.A. J. Moulson, and J. M. Herbert, “Electroceramics Materials Properties Applications”, London, Chapman and Hall ,New York, 131(1990).
6.S. Y. Chun, H. Funakubo, K. Shinozaki, N. Mizutani and N. Wakiya, “Phase Diagram and Microstructire in the ZnO-Pr2O3 System”, J. Am. Ceram. Soc., 80, 4, 995-998 (1997)
7.C.W. Nahm, “Electrical Properties and Stability of Praseodymium Oxide-Based ZnO Varistor Ceramics Doped with Er2O3”, J. Europ. Ceram. Soc. 23, 9, 1345-1353 (2003)
8.T. K. Gupta, “Application of Zinc Oxide Varistors”, J. Am. Ceram. Soc. 73, 7, 1817 – 1840 (1990)
9.G. E. Pike, “Electronic of ZnO varistor: A New Model”, 369-377 in “Grain boundaries in Semiconductor” , ed H. J. Leamy, G. E. Pike and C. H. Seager North Holland Pulishing Co. New York (1982).
10.T. K. Gupta, and W. G. Carlson, “A Grain Boundary Defect Model for Instability/Stability of ZnO Varistor”, J. Mater. Sci., 20, 3487-3500 (1985)
11.K. Mukae, K. Tsuda, and I. Nagasawa, “Non-Ohmic Properties of ZnO-Rare Earth Metal Oxide-Co3O4 Ceramics”, Jpn. J. Appl. Phys., 16, 8, 1361-1368, (1977)
12.D. R. Clarke, ”Varistor Ceramics”, J. Am. Ceram. Soc., 82, 3, 485-502, (1999)
13.M. Sida, S. Y. Chun, N. Wakiya, K. Shinozaki and N. Mizutani, “Effect of the sintering temperature and atmosphere on the grain growth and grain boundary phase formation of Pr-doped ZnO varistor” J. Ceram. Soc. Jpn., 104, 1, 45 – 49 (1996)。
14.A. B. Alles, and V. L. Burdick “The Effect of Liquid-Phase Sintering of Pr6O11-Based ZnO Varistors”, J. Appl. Phys., 70, 11, 6883-6890 (1991)
15.A. B. Alles, R. Puskas, G. Callahan, and V. Burdick, “Compositional Effects on the Liquid-Phase Sintering of Praseodymium Oxide-Based Zinc Oxide Varistors” J. Am. Ceram. Soc.,76, 8, 2098-2102 (1993)
16.Y. S. Lee, K. S. Liao, and T. Y. Tseng “Microstructure and Crystal Phases of Praseodymium Oxides in Zinc Oxide Varistor Ceramics”, J. Am. Ceram. Soc., 79, 9, 2379-2384 (1996)
17.N. Wakiya, S. Y. Chun, K. Shinozaki, and N. Mizutani “Redox Reaction of Praseodymium Oxide in the ZnO Sintered Ceramics”, J. Sol. Stat. Chem., 149, 349-353 (2000)
18.C. W. Nahm, “Effect of Cooling Rate on Degradation Characteristics of ZnO-Pr6¬O11-CoO-Cr2O3-Y2O3-Based Varistors”, Sol. Stat. Comm., 132, 213-218 (2004)
19.S. Y. Chun, N. Wakiya, h. Funakubo, K. Shinozaki, and N. Mizuyani, “Phase Diagram and Microstructure in the ZnO-Pr2O3 System”, J. Am. Ceram. Soc., 80, 4, 995-998(1997)
20.N. Wakiya, S. Y. Chun, C. H. Lee, O. Sakurai, K. Shinozaki, and N. Mizutani, “Effect of Liquid Phase and Vaporization on the Formation of Microstructure of Pr Doped ZnO Varistor”, J. Elect. Ceram., 4, 15-23 (1999)
21.C. W. Nahm, and H. S. Kim, “Effect of Pr6O11/CoO Mole Ratio on Nonlinear Properties and DC Accelerated Aging Characteristics of ZnO-Pr6O11-CoO-Dy2O3-Based Varistors”, Mater. Lett., 56, 379-385 (2002)
22.C. W. Nahm, “Influence of Praseodymium Oxide/Cobalt Oxide Ratio on Microstructure and Electrical of Zinc Oxide Varistor Ceramics”, Mater. Chem. Phys., 80, 746-751(2003)
23.T.R.N. Kutty and S. Ezhilvalavan, “The influence of Bi2O3 non- stoichiometry on the non-linear property of ZnO varistors”, Mater. Chem. Phys., 38, 267–276(1994)
24.C. N. Turton and T. I. Turton, “The oxide handbook”, ed. G. V. Samsonov, IFI/Plenum, New York, 378 – 379(1973)
25.Y. Yano, Y. Takai, and H. Moroka, “Interface States in ZnO Varistor with Mn, Co, and Cu impurities”, J. Mater. Res., 9, 1, 112 – 118 (1994)
26.Y. Chen, C. Shen, and L. Wu, “Grain Growth Processes in ZnO Varistors with Various Valence States of Manganese and Cobalt”, J. Appl. Phys., 69, 12, 8363 – 8367(1991)
27.T. Watari and R.C. Bradt, ”Grain growth of sintered ZnO with alkali oxide additions”, J. Ceram. Soc. Jpn., 101, 1085–1089(1993)
28.W. Heywang, “Resistivity Anomaly in Doped Barium Titanate “J. Am. Ceram. Soc., 47, 10, 484 – 490 (1964)
29.K.Mukae, K. Tsuda and I. Nagasawa, “Capacitance-vs-voltage characteristics of ZnO varistors” J. Appl. Phys., 50, 6, 4475 – 4476(1979)
30.林予順,「氧化鋅變阻器之缺陷研究」,國立交通大學電子物理學所,碩士論文 (1995)。
31.E. D. Guth, J. R. Holden, N. C. Baenziger and L. Eyring”Praseodymium Oxides. II. X-Ray and Differential Thermal Analyses”, 76, 5239 – 5242 (1954)
32.M. R.C. Santos, P. R. Bueno, E. Longo, J. A. Varela” Effect of oxidizing and reducing atmospheres on the electrical properties of dense SnO2-based varistors” J. Europ. Ceram. Soc., 21, 161-167(2001)
33.R. Hansson, P.C. Hayes, and E. Jak, “Phase equilibria in the Fe-Zn-O system at conditions relevant to zinc sintering and smelting”, Mineral Processing and Extractive Metallurgy, 14, 3, 141-146(2004)
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
無相關期刊