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製程對鈮酸鋰陶瓷應用的影響 = Effects of fabricati...

吳明儒

製程對鈮酸鋰陶瓷應用的影響 = Effects of fabrication process on application of lithium niobate

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Effects of fabrication process on application of lithium niobate
作者:	吳明儒,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	民100
面頁冊數:	91葉部份彩圖 : 30公分;
標題:	鈮酸鋰
標題:	lithium niobate
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/86923518905906421464
附註:	參考書目：葉40-42
摘要註:	本研究使用固態反應法，使用Nb2O5與Li2CO3形成LixNb(1-x)O3陶瓷。並使用奈米研磨製程來達成奈米級粒徑之陶瓷，搭配高分子材料PVDF，製備複合材料。藉由X-Ray分析、SEM分析、介電特性等量測，以掌握最佳之組成與製程參數，得到最佳介電特性與充填比例之試樣。由實驗結果得知，隨著Li2CO3增加，固態反應會得到LiNbO3及LiNb3O8兩相共存，LiNb3O8的增加會降低陶瓷的相對介電係數。由以上結論，本研究認為LiNbO3組成較適合進行製程對鈮酸鋰陶瓷應用的影響。利用奈米研磨機來達到降低陶瓷粒徑，並比較研磨前後的差異性，本研究發現隨研磨時間增加，陶瓷燒結溫度隨下降，而且室溫相對介電係數隨之略降。於物性量測方面，藉X光繞射分析觀察晶相、SEM觀察表面結構。電性量測則使用HP4294阻抗分析儀。利用DMF作為高分子材料PVDF的溶劑來，並將陶瓷粉加入溶液中觀察其分散性，從實驗中觀察得知未使用奈米研磨製成之前的粉末由於粒徑過大，在溶液中分散性不佳，由以上結論，本研究認為使用奈米研磨製程的陶瓷粉末比較適合進行LN/PVDF之複合材料製備。於物性量測方面，藉X光繞射分析觀察晶相、SEM觀察表面結構及膜厚。電性量測則使用HP4294阻抗分析儀。本研究利用射頻磁控濺鍍法沉積LN鐵電薄膜於玻璃基板上。藉由不同濺鍍參數，氧氣濃度、濺鍍功率與退火製程處理，探討濺鍍參數對薄膜的影響。於物性量測方面，藉X光繞射分析觀察晶相、SEM觀察表面結構及膜厚、藉UV-Vis-IR光譜儀分析穿透率。實驗結果得知，最佳填充比例下，複合材料在頻率1MHz時的相對介電係數為45；薄膜的最佳濺渡參數為功率100W、Ar氣氛。 In this study, Nb2O5 and Li2CO3 were used to formed the LixNb(1-x)O3 compositions by solid-state reaction method. Then, the powders were used to achieve the nano-size ceramic by the nano-grinding process, the polymer which is named PVDF was used to form the composite materials. By the analysis of XRD、SEM and dielectric constant, the best composition and filling Ratio will be obtained.From the experimental results, the two phases, LiNbO3 and LiNb3O8, were coexistence with increasing Li2CO3 by solid-state reaction method. The relative dielectric constants of the ceramics decreased with the LiNb3O8 increasing. For above results, LixNb(1-x)O3 composition was more suitable for LiNbO3 process applied for LN ceramic impact.The powders were used to grind to achieved nano-size, to compare the difference between the front and rear. From the experimental results, the sintering temperatures of the ceramics decreased with the averaging particle size decreasing, and the relative dielectric constants of the LN in room temperature were something decreasing. The physicals characteristics of the ceramics of the LN, were obtained by analyses of SEM, XRD pattern. In electrical properties of the ceramics of the LN were measured by the HP 4294A impedance.DMF as a solvent was used to dissolve PVDF, and mixed with ceramic powders of LN, then to observe the dispersion of ceramic powders in the PVDF/DMF solution. From the experimental results, the larger particle size, the lower dispersion. For above results, the nano-size lithium niobate was more suitable substitute to form the LN/PVDF composite materials.The RF magnetron sputtering was used to deposit LiNbO3 (LN) ferroelectric thin film3on glass substrate. We were discussed on different oxygen concentration, and RF power effect on the characteristics of LN thin film. The physicals characteristics of the ceramics of the LN, were obtained by analyses of SEM, XRD pattern, UV-Vis spectrum.From the experimental results, the relative dielectric constant of the composite materials in 1MHz were 45 at the best filling ratio. The LN film was more suitable after RTA 500℃ in argon atmosphere post-treatment.

製程對鈮酸鋰陶瓷應用的影響 = Effects of fabrication process on application of lithium niobate
吳, 明儒

製程對鈮酸鋰陶瓷應用的影響 = Effects of fabrication process on application of lithium niobate / 吳明儒撰 - [高雄市] : 撰者, 民100. - 91葉 ; 部份彩圖 ; 30公分.
參考書目：葉40-42.
鈮酸鋰lithium niobate

製程對鈮酸鋰陶瓷應用的影響 = Effects of fabrication process on application of lithium niobate
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