研究生: |
劉醇澤 Chun-tse Liu |
---|---|
論文名稱: |
黑色氧化鋯之機械性質研究 Mechanical Properties of Black-Colored Zirconia |
指導教授: |
林舜天
Shun-Tian Lin |
口試委員: |
詹添印
Tien-Yin Chan 周賢鎧 Shyankay Jou |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2007 |
畢業學年度: | 95 |
語文別: | 中文 |
論文頁數: | 64 |
中文關鍵詞: | 氧化鋯 、氧化釔 、氧化鋁 、氧化錳 、氧化鈷 、氧化鐵 、機械性質 |
外文關鍵詞: | Color Centers, Yittria-stabilized Zirconia, Black Zirconia |
相關次數: | 點閱:334 下載:1 |
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本研究以利用摻雜顯色氧化物(氧化鋁、氧化錳、氧化鈷及氧化鐵)形成Color Centers使釔安定氧化鋯(ZrO2-5.4wt%Y2O3)變成黑色氧化鋯,並維持原有釔安定氧化鋯(ZrO2-5.4wt%Y2O3)機械性質為目的。實驗結果顯示釔安定氧化鋯(ZrO2-5.4wt%Y2O3)摻雜了顯色氧化物(氧化鋁、氧化錳、氧化鈷及氧化鐵)將會略微降低其相對密度,但仍維持於原始釔安定氧化鋯(ZrO2-5.4wt%Y2O3)95%以上之密度。而Color Centers的分佈比例會受摻雜氧化鋁影響,且分佈的Color Centers會影響硬度值。綜合所有分析比較,以96wt%釔安定氧化鋯(ZrO2-5.4wt% Y2O3)-1wt%氧化鋁(Al2O3)-1.5wt%氧化錳(MnO2)-0.5wt%氧化鈷(CoO)-1wt%氧化鐵(Fe2O3)之結果最符合本實驗要求。以電子微探儀(EPMA)可觀察出摻雜的氧化鋁成功的控制了氧化鈷、氧化錳及氧化鐵形成了Color Centers,雖有非常微量的摻雜氧化物擴散於氧化鋯基地組織,但仍使黑色氧化鋯機械性質非常接近於原始釔安定氧化鋯(ZrO2-5.4wt%Y2O3)。
The purpose of this study was to form black yttrium-stabilized zirconia (ZrO2-5.4wt%Y2O3, YSZ) by doping various oxides, including aluminum oxide, manganese oxide, cobalt oxide, and ferric oxide, of various quantities into YSZ, while maintaining original mechanical property of YSZ. The results showed that doping of the oxides into YSZ slightly reduced the relative density of the sintered compact, but the density could still be maintained higher than 95% theoretical density of YSZ. The relative distribution homogeneity of the color centers and the hardness of sintered compact were strongly determined by the doping quantity of aluminum oxide. Although oxides of low concentrations were found to diffuse into the lattice of YSZ, the mechanical properties of black YSZ were not greatly deteriorated and were very close to those of undoped YSZ. Based on all the compositional range investigated in this study, YSZ - 1wt%Al2O3 - 1.5wt%MnO2 - 0.5wt%CoO - 1wt%Fe2O3 was found to the most suitable for blackening the YSZ.
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