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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 段維新 | |
| dc.contributor.author | Shiu-Sheng Chen | en |
| dc.contributor.author | 陳旭昇 | zh_TW |
| dc.date.accessioned | 2021-06-13T15:54:44Z | - |
| dc.date.available | 2010-06-24 | |
| dc.date.copyright | 2008-06-24 | |
| dc.date.issued | 2008 | |
| dc.date.submitted | 2008-06-17 | |
| dc.identifier.citation | References
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Am. Ceram. Soc., 89, 2006, 1300-1307. Appendix References 1. H. Kishi, Y. Mizuno and H. Chazono, “Base Metal Electrode Multilayer Ceramic Capacitors Past Present and Future Perspectives”, Jpn. J. Appl. Phys., 42, 2003, 1-15. 2. H. Saito, H. Chazono, H. Kishi and N. Yamaoka, “X7R Multilayer Ceramic Capacitors with Nickel Electrodes”, Jpn. J. Appl. Phys., 30, 1991, 2307-2310. 3. Y. Mizuno, T. Hagiwara, H. Chazono and H. Kishi, “Effect of Milling Process on Core-Shell Microstructure and Electrical Properties for BaTiO3-based Ni-MLCC”, J. Eur. Ceram. Soc., 21, 2001 1649-1652. 4. H. Wen, X. Wang and L. Li, “Observation on the Interdiffusion in Multilayer Ceramic Capacitors”, Jpn. J. Appl. Phys., 45, 2006, 1768-1770. 5. S. Wada, H. Yasuno, T. Hoshina, S. M. Nam, H. Kakemoto and T. Tsurumi, “Preparation of nm-Sized Barium Titanate Fine Particles and Their Powder Dielectric Properties”, Jpn. J. Appl. Phys., 42, 2003, 6188-6195. 6. L. W. Chu, K. N. Prakash, M. T. Tsai and I. N. Lin, “Dispersion of Nano-Sized BaTiO3 Powders in Nonaqueous Suspension with Phosphate Ester and their Applications for MLCC”, J. Eur. Ceram. Soc., 28, 2008 1205-1212. 7. T. Yonezawa, S. Takeoka, H. Kishi, K. Ida and M. Tomonari, “The Preparation of Copper Fine Particle Paste and its Application as the Inner Electrode Material of a Multilayered Ceramic Capacitor”, Nanotechnology, 19, 2008 145706. 8. R. Ueyama, T. Ando, T. Morimitsu and Y. Hashizume, “Preparation and Evaluation of Next-Generation Ni Multilayer Ceramic Chip Capacitor Electrode Using Ni Flake Powder”, J. Ceram. Soc. Japan, 112, 2004, 458-461. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37981 | - |
| dc.description.abstract | 摘要
陶瓷-金屬複合材料的性質在接近Percolation Threshold時會有重大的轉變，例如:介電常數急遽增加、電阻值突然下降等等。本研究製備了兩個試樣系統，BaTiO3/Ni(NO3)2系統及BaTiO3/Ni系統。在氮氣氣氛中燒結後，兩個系統皆可得到BaTiO3/Ni複合材料。探討金屬Ni的添加對BaTiO3的介電性質及顯微結構的影響。 實驗結果顯示，純BaTiO3試樣在1300℃燒結後，其微結構僅有小晶粒；當燒結溫度大於1330℃時，會因共晶液相的幫助而發生異常晶粒成長。電性量測的結果顯示，在1300℃時有最高的相對介電常數( )，BaTiO3試樣經過氮氣氣氛燒結後仍處於絕緣狀態(1012 )。 關於BaTiO3-Ni複合材料，XRD結果顯示BaTiO3與Ni不會發生化學反應；相對密度在燒結溫度為1370℃時為最佳；EPMA結果顯示，在氮氣氣氛燒結後，所有Ni顆粒的表面因氧化而覆蓋一層NiO層。關於BaTiO3/Ni(NO3)2系統，在燒結溫度為1330℃時，試樣的相對介電常數在接近Percolation Threshold (34.3 vol%Ni)時展現極高的值( )；BaTiO3/Ni系統則是發生在燒結溫度為1370℃且Ni含量為36vol%時，試樣的相對介電常數約為170000。磁性量測結果顯示，試樣的磁化強度隨著Ni含量的增加而增加，在Ni添加量為36vol%時的飽和磁化強度約為25emu/g。 | zh_TW |
| dc.description.abstract | Abstract
The properties of ceramic-metal composites exhibit significant change in the neighborhood of percolation threshold, for examples: the dielectric constant increases rapidly and the resistance decreases abruptly. In the present study, two specimen series, BaTiO3/Ni(NO3)2 and BaTiO3/Ni systems are prepared by sintering in N2. The BaTiO3/Ni composites are obtained. The effect of Ni content on the microstructure and the dielectric properties of Ni-doped BaTiO3 are investigated. The experimental results show that the microstructure of BaTiO3 specimen sintered at 1300℃ is composing of only fine grains. When the sintering temperature is above 1330℃, the abnormal grain growth can take place due to the presence of an eutectic liquid. The dielectric constant of BaTiO3 specimen is the highest after sintering at 1300℃( ). The BaTiO3 specimen is insulating after sintering in N2 (1012 ). For the BaTiO3-Ni composites, the XRD patterns show there is no chemical reaction between BaTiO3 and Ni. The relative density is the highest after sintering at 1370℃. The EPMA analysis shows that Ni particles are surrounded by a layer of NiO because of the oxidation. For the BaTiO3/Ni(NO3)2 system, the dielectric constant of the specimens in the neighborhood of the percolation threshold (34.3vol%Ni) exhibits extraordinarily high value when the sintering temperature is 1330℃( ). The dielectric constant of BaTiO3-36vol%Ni specimens after sintering at 1370℃ is about 170000. The magnetic results show that the magnetization increased with increasing Ni content. The specific saturation magnetization of BaTiO3-36vol%Ni composites is about 25 emu/g. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T15:54:44Z (GMT). No. of bitstreams: 1 ntu-97-R95527006-1.pdf: 20861524 bytes, checksum: 5f1243f0afe571696f47d1a117394aea (MD5) Previous issue date: 2008 | en |
| dc.description.tableofcontents | Contents
致謝 III 摘要 V Abstract VII List of Tables XIII List of Figures XIV Chapter 1 Introduction 1 Chapter 2 Literature Review 3 2-1 Crystal Structure of BaTiO3 3 2-2 Dielectric Properties of BaTiO3 9 2-3 Microstructure of BaTiO3 13 2-4 Characterization of Nickel and Nickel Oxide 18 2-5 Electrical Properties of BaTiO3-Based Composites 23 2-6 Percolation Theory 28 Chapter 3 Experimental Procedures 41 3-1 Initial Materials 41 3-2 BaTiO3-Ni(NO3)2 System 43 3-2-1 Specimens Preparation and Sintering Conditions 43 3-2-2 Phase Identification 46 3-2-3 Relative Density 46 3-2-4 Microstructure Observation 47 3-2-5 Electrical Properties Measurement 48 3-2-5-1 Dielectric Property 48 3-2-5-2 Insulation Resistivity 49 3-2-6 Magnetic Properties Measurement 49 3-3 BaTiO3-Ni System 50 3-3-1 Specimens Preparation and Sintering Conditions 50 3-3-2 Phase Identification 50 3-3-3 Relative Density 50 3-3-4 Microstructure Observation 50 3-3-5 Electrical Properties Measurement 50 3-3-6 Magnetic Properties Measurement 50 Chapter 4 Results 53 4-1 Pure BaTiO3 53 4-1-1 Phase Identification 53 4-1-2 Relative Density and Microstructure Observation 53 4-1-3 Electrical Properties 54 4-1-3-1 Dielectric Property 54 4-1-3-2 Insulation Resistivity 55 4-2 BaTiO3-Ni(NO3)2 System 59 4-2-1 Phase Identification 59 4-2-2 Relative Density and Microstructure Observation 60 4-2-3 Electrical Properties 61 4-2-3-1 Dielectric Property 61 4-2-3-2 Insulation Resistivity 63 4-2-4 Magnetic Properties 63 4-2-5 EPMA Analysis 64 4-3 BaTiO3-Ni System 73 4-3-1 Phase Identification 73 4-3-2 Relative Density and Microstructure Observation 73 4-3-3 Electrical Properties 74 4-3-3-1 Dielectric Property 74 4-3-3-2 Insulation Resistivity 76 4-3-4 Magnetic Properties 77 Chapter 5 Discussion 85 5-1 Pure BaTiO3 85 5-1-1 Phase Identification 85 5-1-2 Relative Density and Microstructure Observation 86 5-1-3 Electrical Properties 87 5-1-4 Magnetic Properties 89 5-2 BaTiO3-Ni(NO3)2 System 93 5-2-1 Phase Identification 93 5-2-2 Relative Density and Microstructure Observation 94 5-2-3 Electrical Properties 96 5-2-4 Magnetic Properties 101 5-3 BaTiO3-Ni System 107 5-3-1 Phase Identification 107 5-3-2 Relative Density and Microstructure Observation 107 5-3-3 Electrical Properties 109 5-3-4 Magnetic Properties 111 5-4 Comparison 117 5-4-1 Phase Identification 117 5-4-2 Microstructure 117 5-4-3 Electrical Properties 118 5-4-4 Magnetic Properties 120 Chapter 6 Conclusions 123 References 125 Appendix 133 Introduction 133 Experimental Procedures 134 Results and Discussion 137 Conclusions 147 References 149 | |
| dc.language.iso | en | |
| dc.subject | 介電損失 | zh_TW |
| dc.subject | 多層陶瓷電容器 | zh_TW |
| dc.subject | 電阻率 | zh_TW |
| dc.subject | 異常晶粒成長 | zh_TW |
| dc.subject | 鈦酸鋇 | zh_TW |
| dc.subject | 鎳 | zh_TW |
| dc.subject | Percolation | zh_TW |
| dc.subject | 介電常數 | zh_TW |
| dc.subject | MLCCs | en |
| dc.subject | dielectric loss | en |
| dc.subject | abnormal grain growth | en |
| dc.subject | Ni | en |
| dc.subject | BaTiO3 | en |
| dc.subject | dielectric constant | en |
| dc.subject | percolation | en |
| dc.subject | resistivity | en |
| dc.title | 具高介電常數的鈦酸鋇/鎳複合材料之製程研究 | zh_TW |
| dc.title | Percolative BaTiO3/Ni Composites with Improved Dielectric Constant | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 96-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 盧宏陽,王錫福,黃永慶 | |
| dc.subject.keyword | 鈦酸鋇,鎳,Percolation,介電常數,介電損失,異常晶粒成長,電阻率,多層陶瓷電容器, | zh_TW |
| dc.subject.keyword | BaTiO3,Ni,percolation,dielectric constant,dielectric loss,abnormal grain growth,resistivity,MLCCs, | en |
| dc.relation.page | 149 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2008-06-18 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 材料科學與工程學研究所 | zh_TW |
| 顯示於系所單位： | 材料科學與工程學系 | |
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