研究生: |
吳姵禛 Pei-Chen Wu |
---|---|
論文名稱: |
低溫共燒Ba-Ti-O微波介電陶瓷與銅電極於還原氣氛下之相穩定性之研究 Phase Stability of Low Temperature Co-fired Ba-Ti-O Microwave Ceramics with Copper Electrodes in Reducing Atmosphere |
指導教授: |
周振嘉
Chen-Chia Chou |
口試委員: |
朱立文
Li-Wen Chu 郭東昊 Dong-Hau Kuo |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 93 |
中文關鍵詞: | 微波介電陶瓷 、相轉變 |
外文關鍵詞: | microwave dielectric ceramics, phase transformat |
相關次數: | 點閱:288 下載:8 |
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本研究主要在探討玻璃助燒結劑添加對於Ba-Ti-O微波介電陶瓷於還原氣氛下之燒結行為機制與微觀結構;實驗中,玻璃助燒劑因成分配方不同,對整個材料系統之共燒行為有很明顯的影響,由電性分析與玻璃成份搭配可以得知,B2O3/SiO2的添加比例會影響散逸因子(Dissipator Factor, DF)、密度(Density g/cm3) 及介電常數(Dielectric Constant, k) 大小變化;ZnO的添加會造成絕緣電阻(Insulation Resistance, IR)值的提升,但對DF值則無明顯影響;BaO對DF值而言,無明顯影響,但與B2O3、SiO2之間的匹配會影響密度與介電常數。
當玻璃成份配方在B2O3 wt%添加量為23.1∼30.7wt%、SiO2 wt%添加量為19∼29.5 wt%、BaOwt%添加量為38.8∼57.5 wt% 此區塊內時,試片玻璃軟化點低,燒結緻密化佳,陶瓷體密度可提升至4.37g/cm3左右;經由掃描式電子顯微鏡(SEM)觀察,由背像散射電子(BEI)中可發現含矽量少之陶瓷體內部有很多白點出現,此試片的x光繞射圖形經分析有二次相BaCuO2出現,經由(EPMA)成份分析證實共燒後之陶瓷體易造成銅的擴散,除了使試片顏色變黑外,容易導致主要組成BaTi4O9陶瓷體成分的轉變。
進一步,由X光繞射圖形分析可以得知,影響Ba-Ti-O主體陶瓷發生相變化的主因為ZnO/BaO比及BaCuO2,當B2O3/SiO2比例位在B2O3 wt%為23.1∼30.7wt%、SiO2 wt%為19∼29.5 wt%範圍內,可增加玻璃粉末與陶瓷粉體之間的接觸,此時若ZnO/BaO之莫耳比超過2則會形成Ba4Ti13O30,然而當ZnO/BaO之莫耳比小於0.75,則會形成將造成陶瓷體BaTi4O9轉變成BaTi6O13。
In this research, we report sintering behavior and microstructures of glass-added Ba-Ti-O microwave dielectric ceramics with copper paste in reducing atmosphere. X-ray diffractometry was employed to discriminate structural variation after Ba-Ti-O microwave dielectric materials were sintered, and scanning electron microscopy used to investigate microstructural characteristics in the materials.
Experimental results show different colors of disk with Cu-electrode and Ba-Ti-O microwave dielectric ceramics when the glass diffuse smoothly or slowly during sintering. X-ray results indicate that Cu reacted with Ba seriously to form complicated reaction phases, like BaCuO2, if BaCuO2 exhibt then the color of disk will transfer to dark. Also in x-ray reports, we can finds different Ba-Ti-O phases occur with various ratio of Ba/Ti. Ba4Ti13O30 formation when BaO/ZnO ratio is large then 2, in stead of the BaTi6O13 occur as the is BaO/ZnO ratio smaller than 0.75.
In microwave dielectric electric properties analysis, the experimental results show that ceramic density the electrical properties, like dissipation factor (DF), insulation resistance (IR) and dielectric constant. If density is high, then dissipation factor (DF) will be lower, insulation resistance (IR) will be higer and dielectric constant will be higher too.
1 王惠傑, 工業材料 115, 74-79 (85).
2 V. K. Nagesh, A. P. Tomsia, and J. A. Pask, Journal of Materials Science 18, 2173-2180 (1983).
3 盧慶儒, (電子時報, 2006).
4 E. Guan, W. Chen, and L. Luo, Ceramics International 33, 1145-1148 (2007).
5 Hippel, Dielectric Materials and Applications (Artech House, 1995).
6 S. Y. Cho, I. T. Kim, and K. Sun Hong, Journal of Materials Research 14, 114-119 (1999).
7 R. C. Kell, A. C. Greenham, and G. C. E. Olds, Journal of the American Ceramic Society 56, 352-354 (1973).
8 P. C. Osbond, R. W. Whatmore, and F. W. Ainger, in PROPERTIES AND MICROWAVE APPLICATIONS OF ZIRCONIUM TITANATE STANNATE CERAMICS, London, Engl, 1985 (Inst of Ceramics), p. 167-178.
9 S. F. Wang, C. C. Chung, C. H. Wang, and J. P. Chu, Journal of the American Ceramic Society 85, 1619-1621 (2002).
10 W. Y. Lin, R. A. Gerhardt, R. F. Speyer, and J. Y. Hsu, Journal of Materials Science 34, 3021-3025 (1999).
11 S. G. Lu, K. W. Kwok, H. L. W. Chan, and C. L. Choy, Materials Science and Engineering B: Solid-State Materials for Advanced Technology 99, 491-494 (2003).
12 D. Hennings and P. Schnabel, Philips Journal of Research 38, 295-311 (1983).
13 S. Nishigaki, H. Kato, S. Yano, and R. Kamimura, American Ceramic Society Bulletin 66, 1405-1410 (1987).
14 吳朗, 電子陶瓷-介電陶瓷 (全新資源圖書股份有限公司, 83).
15 T. Nishikawa, Y. Ishikawa, J. Hattori, and K. Wakino, IEEE Transactions on Microwave Theory and Techniques 37, 2074-2079 (1989).
16 S. Tangjuaiik and T. Tunkasiri, Materials Research Innovations 6, 256-259 (2002).
17 S. Wu, IEEE Transactions on Components and Packaging Technologies 29, 827-832 (2006).
18 S. Wu, H. Qin, and P. Li, Journal of University of Science and Technology Beijing: Mineral Metallurgy Materials (Eng Ed) 13, 250-255 (2006).
19 Y. C. Lee, C. T. Lee, S. Wang, and F. S. Shieu, Materials Chemistry and Physics 100, 355-360 (2006).
20 C. Stampfl, M. Veronica Ganduglia-Pirovano, K. Reuter, and M. Scheffler, Surface Science 500, 368-394 (2002).
21 楊正杰1,張鼎張2,鄭晃忠3, 毫微米通訊 7, 40-46.
22 W. Songping and M. Shuyuan, Materials Letters 60, 2438-2442 (2006).
23 J.-N. Lin and T.-B. Wu, Journal of the American Ceramic Society 72, 1709-1712 (1989).
24 C. Vigreux, B. Deneuve, J. El Fallah, and J. M. Haussonne, Journal of the European Ceramic Society 21, 1681-1684 (2001).
25 H. P. Jeon, S. K. Lee, S. W. Kim, and D. K. Choi, Materials Chemistry and Physics 94, 185-189 (2005).
26 D. W. Kim, D. G. Lee, and K. S. Hong, Materials Research Bulletin 36, 585-595 (2001).
27 D. N. Kim, J. Y. Lee, J. S. Huh, and H. S. Kim, Journal of Non-Crystalline Solids 306, 70-75 (2002).
28 J. A. Lee, J. H. Lee, and J. J. Kim, Journal of the European Ceramic Society 26, 2135-2138 (2006).
29 M. Z. Jhou and J. H. Jean, Journal of the American Ceramic Society 89, 786-791 (2006).
30 Y.S.Su, National Tsing Hua University (2007).
31 in 福建陶瓷資源網 (2007).
32 D. J. SHAW, introduction tp colloid and surface chemistry 4/e.
33 C. L. Huang, M. H. Weng, C. T. Lion, and C. C. Wu, Materials Research Bulletin 35, 2445-2456 (2000).
34 Y. C. F. a. J. H. Jean, journal of materials and Science and engineering 33, 160-165 (2001).
35 M. Okamoto, H. Tanei, S. Iwanaga, M. Nakamura, S. Ishihara, F. Tagami, and K. Shinozaki, Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan 116, 561-565 (2008)