臺灣博碩士論文加值系統

本研究成功以水解塗層製備摻雜氧化鈷 (0.5、1.0、1.5 wt％) 與氧化鋁 (0.5、1.0、1.5 wt％) 於氧化鋯 (TZP, Tetragonal Zirconia Poly-crystals) 粉末，經模壓成形，在空氣燒結至1430℃，發現當氧化鈷與氧化鋁比例相近時，所生成鈷、鋁尖晶石與氧化鋯因液相燒結使整體緻密度有所提昇。摻雜後的氧化鋯機械性質隨著緻密度有些許變化，但幅度不大，氧化鈷摻雜較氧化鋁比例高時，容易使部分氧化鋯晶粒成長，同時也發現少許氧化鋯單斜晶相，氧化鋁的摻雜較氧化鈷多時，氧化鋯晶粒尺寸較小。隨著氧化鈷摻雜濃度升高趨近藍黑色。當生成的鈷、鋁尖晶石比例多時，顏色趨近深藍色。氧化鋁則是造成整體的反射率些許下降。

Tetragonal zirconia polycrystal (TZP, ZrO2-3mol%Y2O3) was doped with cobalt oxide (0.5, 1.0, or 1.5 wt％) and aluminum oxide (0.5, 1.0, or 1.5 wt％) by a solution coating method in the powder state. After sintering the pressed specimens in air at 1430 degC, the relative density of the sintered specimens could be enhanced for the specimens having the approximately equivalent molar ratios of cobalt oxide and aluminum oxide, due to the formation of a spinel phase. The mechanical properties of the doped TZP were only slightly affected by the dopants. A minor fraction of monoclinic phase of larger grain was induced if the doping concentration of cobalt oxide was higher than that of aluminum oxide, while the grain size of zirconia became slightly smaller if the doping concentration of aluminum oxide was higher than that of cobalt oxide. The color of the doped TZP became dark blue if the concentration of cobalt oxide was high, but became royal blue if the relative abundance of the spinel phase of cobalt oxide and aluminum oxide was high. A high doping concentration of aluminum oxide could reduce the reflection ratio of visible light spectrum.

摘要 I
Abstract II
目錄 III
圖目錄 VII
表目錄 IX
第1章 諸論 1
1.1研究背景與目的 1
1.2研究內容 2
第2章 理論與文獻回顧 3
2.1 色彩與視覺的基本原理 3
2.2 氧化鋯 6
2.2.1 氧化鋯基本性質 6
2.2.2 氧化鋯韌化機制 11
2.2.3 韌化性能 12
2.3 陶瓷材料改變色澤之機制 14
2.3.1 色料 14
2.3.2 氧化鈷 15
2.4氧化鋁穩定劑 16
2.4.1 尖晶石結構 16
2.4.2 穩定劑與鈷、鋁尖晶石CoAl2O4 17
2.5 摻雜物摻入方式對氧化鋯的影響 19
2.6 小結 20
第3章 實驗步驟與方法 21
3.1 實驗流程 22
3.1.1實驗材料 23
3.1.2粉末製備 23
3.1.3生胚製備 25
3.1.4試片燒結 26
3.2 性質分析 27
3.2.1 密度分析 27
3.2.2 晶體結構分析 27
3.2.3 硬度與破壞韌性量測 27
3.2.4 顯微結構觀察 28
3.2.5 成分分析 28
3.2.6 可見光光譜分析 29
第4章 實驗結果與討論 30
4.1 緻密度分析 30
4.2 硬度與破壞韌性 33
4.2.1 硬度量測 33
4.2.2 破壞韌性 34
4.3顯微結構測定 36
4.3.1 二次電子成像圖 36
4.3.2 氧化鈷摻雜對微結構的影響 36
4.3.3 尖晶石對微結構影響 37
4.3.4 氧化鋁摻雜對微結構影響 39
4.3.5 平均晶粒尺寸大小分析 41
4.4 晶體結構分析 44
4.5 光學性質探討 47
4.5.1 氧化鈷摻雜對可見光光譜影響 47
4.5.2 尖晶石摻雜對可見光光譜影響 48
4.5.3 氧化鋁摻雜對可見光光譜影響 49
4.6 成份分析 51
4.6.1 元素分布圖 51
4.7 小結 53
第5章 結論 54
參考文獻 56
附錄 60

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