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研究生:劉振興
研究生(外文):Zhen Xing Liu
論文名稱:以溶凝膠法與熔淬法製備菫青石玻璃陶瓷之結晶動力學研究
論文名稱(外文):Crystallization Kinetics of Cordierite Glass-Ceramic Prepared by Sol-Gel and
指導教授:林健正林健正引用關係
指導教授(外文):Chien Cheng Lin
學位類別:碩士
校院名稱:國立交通大學
系所名稱:材料科學與工程系
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:2002
畢業學年度:90
語文別:中文
論文頁數:82
中文關鍵詞:玻璃陶瓷溶凝膠法菫青石
外文關鍵詞:glass-ceramicsol-gelcordierite
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本研究利用溶凝膠法(Sol-Gel)與熔淬法(Melt-Quench)製備菫青石玻璃陶瓷(2MgO-2Al2O3-5SiO2)。並利用TGA、DTA、XRD、FT-IR、STEM/EDS來探討結晶現象。為了探討成核劑對結晶的影響,分別添加2 wt% TiO2或2 wt% ZrO2於菫青石玻璃陶瓷中。結果顯示ZrO2與TiO2的添加皆有助於降低結晶活化能;另外玻璃粉末結晶活化能低於凝膠粉末結晶活化能的原因是玻璃粉末在熱處理過程中會有液相而產生黏性流動(Viscous Flow),使得孔隙降低導致原子擴散變得容易。對兩種粉末而言,μ-cordierite出現在900℃~1100℃之間,1100℃以上μ-cordierite會相變至α-cordierite。對添加ZrO2的試片而言,從XRD與STEM/EDS皆可發現t-ZrO2的存在。

Cordierite glass-ceramic (2MgO-2Al2O3-5SiO2) was prepared by using
Sol-Gel and Melt-Quench method. We discussed the phonamenon of crystallization by using TGA, DTA, XRD, FT-IR, STEM/EDS. In order to understand the influence of nucleating agent for crystallization, we added 2 wt% TiO2 or 2 wt% ZrO2 into cordierite glass-ceramic. We found that the addition of TiO2 and ZrO2 decreased the activation energy .Owing to the viscous flow of glass-powder during heat treament, the activation energy for glass-powder was lower than the one for gel-powder. For both gel and glass-powder, μ-cordierite appeared between 900℃ and 1100℃, and μ-cordierite would transform to α-cordierite above 1100℃. For the sample which ZrO2 was added, there would be t-ZrO2.

目 錄
第一章、前言 1
第二章、文獻回顧與原理 3
2-1菫青石玻璃陶瓷 3
2-2溶凝膠法 5
2-3成核理論 6
2-4結晶成長機制 8
2-5相關結晶動力學參數 10
第三章、實驗步驟 13
3-1凝膠粉末的製備 13
3-2玻璃粉末的製備 14
3-3凝膠粉末的熱重分析儀之分析 15
3-4凝膠粉末與玻璃粉末的示差熱分析儀之分析 15
3-5凝膠粉末與玻璃粉末的傅立葉轉換紅外線光譜之分析 15
3-6凝膠粉末與玻璃粉末的X射線粉末繞射儀之分析 16
3-7凝膠粉末與玻璃體的穿透式電子顯微鏡之分析 16
第四章、結果與討論 17
4-1熱重分析 17
4-2示差分析 17
4-2-1 DTA實驗 17
4-2-2 放熱峰之鑑定 19
4-2-3 各種理論模型之結晶活化能 22
4-3 X-光粉末繞射 26
4-4 傅力葉轉換紅外線吸收光譜 31
4-5 掃描穿透式電子顯微鏡 36
第五章、結論 38
參考文獻 40

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