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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 韋文誠(Wen-Chen Wei) | |
| dc.contributor.author | Chih-Shiun Chou | en |
| dc.contributor.author | 周志勳 | zh_TW |
| dc.date.accessioned | 2021-06-16T03:04:31Z | - |
| dc.date.available | 2015-07-20 | |
| dc.date.copyright | 2015-07-20 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-06-29 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/54562 | - |
| dc.description.abstract | 本研究使用銅基材料製作固態燃料電池之陽極，進行以下的研究開發工作。測試銅與銅鋅合金之基本性質，如導電性、熱膨脹係數、硬度等特性，並對此金屬之抗氧化性做深入探討，測試並比較銅與鎳金屬、鈦六鋁四釩合金在不同測試條件下之氧化行為，最後用表面氧化層之微結構與熱重分析的氧化結果相互驗證。本研究亦製備摻釤及鈷之氧化鈰(Co-SDC)電解質，並提出合成與燒結SDC粉末的方法，利用銅的高導電性和防止積碳的特性，與SDC良好的催化性和離子導電性，使此電池能在750 oC達到112 mW cm-2的最高電功率輸出。此外有鑒於銅鋅合金相較於純銅有較低的熔點和成形性，非常適合做為3D列印的金屬胚料，因此本研究亦設計與開發一熱熔擠(ME)裝置來擠製銅鋅合金，此裝置能達到1100 oC，且有優異的隔熱特性，當擠出嘴為1000 oC時，此裝置外部僅為51 oC。 | zh_TW |
| dc.description.abstract | This study used Cu-based materials as an anode of solid oxide fuel cells (SOFCs) and conducted the following R&D works. Properties of Cu and Cu-Zn alloy were investigated, including electrical conductivity, coefficient of thermal expansion (CTE), hardness and oxidation behavior. The oxidation-resistance of Cu, Ni and Ti-6Al-4V was investigated and compared. Moreover, the microstructure of the oxide layers was observed to verify the results of TGA test. This study also developed cobalt-doped SDC cermet as an electrolyte for intermediate temperature (IT)-SOFC. The Cu-based electrode provided good electronic conductivity and prevented carbon deposition. The SDC was used as catalyst and ionic conductor. The methods to synthesize SDC and sinter a dense SDC electrolyte were also provided in this study. Maximum power density of the Cu-based SOFC was 112 mW cm-2 at 750 oC. On the other hand, due to a low melting point and good formability of Cu-Zn alloy, it was suitably applied on 3D printing (3DP) technique. As a result, a melt-extrusion (ME) module was designed to print Cu-Zn alloy. The ME module could reach 1100 oC to extrude Cu-Zn alloy. Besides, the heat insulation of the module was excellent, which was 51 oC outside the module while the temperature in the nozzle was 1000 oC. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T03:04:31Z (GMT). No. of bitstreams: 1 ntu-104-R02527004-1.pdf: 7906494 bytes, checksum: 723cefaf5e971ff4f1e7d6365bd405c7 (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | 摘要-I
Abstract-II List of Figures-VII List of Tables-XII Abbreviations-XIII Chapter 1 Introduction-1 Chapter 2 Literature review-3 2.1 Introduction of Cu-Zn Alloy-3 2.1.1 Hardness of Cu-Zn Alloy-4 2.1.2 Other Cu-Based Alloys-5 2.2 SOFC with Cu-Based Anode-6 2.2.1 Sintering of SDC Electrolyte-8 2.2.2 Cu-Based Anode for SOFC-9 2.3 Advantages of Metallic 3D Printing-11 2.3.1 Introduction of Different 3D Printing Processes-11 2.3.2 Metal Materials for 3D Printing-13 Chapter 3 Experimental Procedure-24 3.1 Materials-24 3.2 SDC Powder Synthesis-24 3.3 Preparation of Anode Slurry-25 3.4 SOFC Assembly-26 3.5 Assembly of Melt-Extrusion Module-26 3.5.1 Assembly of Barrel-26 3.5.2 Preparation of Castable-27 3.6 Property Characterization-28 3.6.1 Sedimentation Test-28 3.6.2 Particle Size Measurement-29 3.6.3 SEM Analysis-29 3.6.4 Density Measurement-30 3.6.5 Conductivity Measurement-30 3.6.6 Thermal Expansion Analysis-31 3.6.7 XRD Analysis-32 3.6.8 Metallographic Study of Cu-Zn Alloy-32 3.6.9 Test of Oxidation-Resistance-33 3.6.10 Cell Test-35 3.6.11 Thermal Distribution Measurement-36 Chapter 4 Results and Discussion-44 4.1 Properties of Cu-Zn Alloy-44 4.1.1 Electric Property of Cu-Zn Alloy-44 4.1.2 CTE of Cu-Zn Alloy-45 4.1.3 Stability of Cu-Zn Alloy with Electrolyte Oxide-46 4.1.4 Annealing Microstructure and Hardness of Cu-Zn Alloy-47 4.2 Oxidation Kinetics of Cu-Zn Alloy and Other Metals-60 4.2.1 Mass Change during Oxidation Process-60 4.2.2 Activation Energy for Oxidation-61 4.2.3 Oxidation of Cu-Zn Alloy in Protect Atmosphere-63 4.2.4 Microstructure of Oxide Layer-65 4.3 Assembly and Properties of SOFC-81 4.3.1 Solid-State Reaction of SDC Powder-81 4.3.2 Behavior of Sintered SDC Electrolyte-83 4.3.3 Properties of CuO-SDC Slurry and Anode-84 4.3.4 Cell Test and Microstructure-85 4.3.5 Cell Test with Hydrocarbon Fuel-86 4.4 High-Temperature Melt-Extrusion Module-102 4.4.1 Assembly of Melt-Extrusion Module-102 4.4.2 Performance of Heater-103 4.4.3 Module Test-105 (1) Temperature Distribution-105 (2) Extrusion of Cu-Zn Alloy-106 (3) Extrusion Greater than 1100 oC-107 Chapter 5 Conclusions-118 Appendix-120 Reference-124 | |
| dc.language.iso | en | |
| dc.title | 銅基材料於固態燃料電池之應用與熱熔擠組件開發 | zh_TW |
| dc.title | Application of Cu-Based Material on Solid Oxide Fuel Cell (SOFC) and Development of Melt-Extrusion (ME) Module | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 黃坤祥(Kuen-Shyang Hwang),王安邦(An-Bang Wang),洪逸明(I-Ming Hung) | |
| dc.subject.keyword | 銅,黃銅,氧化動力學,陽極,中溫型固態燃料電池,熱熔擠裝置, | zh_TW |
| dc.subject.keyword | Cu,brass,oxidation kinetics,anode,IT-SOFC,melt-extrusion (ME), | en |
| dc.relation.page | 134 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2015-06-30 | |
| 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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