溶膠凝膠法製備B2O3-P2O5-SiO2系玻璃陶瓷之特性探討

Characteristics of B2O3-P2O5-SiO2 glass-ceramics prepared by sol-gel method

傅育棋(Yuh-Chyi Fuh)

指導教授 ： 余宣賦

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2007年)

https://doi.org/10.6846/TKU.2007.00673

摘要

本研究以溶膠凝膠法來製備B2O3-P2O5-SiO2系玻璃陶瓷粉體，實驗中主要探討不同組成的B2O3-P2O5-SiO2系玻璃陶瓷對最終獲得粉體性質之影響，而產物粉體主要是藉由DTA-TG、FT-IR、XRD、SEM、EIS等分析來作性質分析。從結果顯示，原料的硼酸、磷酸含量影響產物粉體的相態，不同的相態呈現出不同的含水導電特性。若硼酸/磷酸比大於0.8，其粉體相態以磷酸硼為主，其熱行為包含了有機物和結晶水的移除，TG曲線在500℃之後持平，其含水導電度則隨熱處理溫度上升而下降。當硼酸/磷酸比小於0.8時，相態包含了磷酸硼與磷酸矽，隨磷酸的增加而主要相態由磷酸硼變為與磷酸矽，其TG曲線在1100℃時會有一重量損失，是磷酸矽在高溫時分解所導致的現象。高磷酸含量的樣品，其含水時的導電度受熱處理溫度的影響較少，最佳的導電度值可達到1.19×10-2 (S/cm)。

關鍵字

溶膠凝膠法 ； 玻璃陶瓷 ； 磷酸硼 ； 磷酸矽

並列摘要

B2O3-P2O5-SiO2 glass-ceramic(BPSG) powder was prepared by using sol-gel method. The resultant powder was analyzed using DTA-TG, FT-IR, XRD, SEM, and EIS. Effects of various BPSG components were studied. The H3BO3/H3PO4 ratios influence the phases and the electric properties of the obtained powder. If the H3BO3/H3PO4 ratios were more than 0.8, BPO4 was the main phase which TG curve end up in a draw at 500℃ with decreasing conductivity by increasing heat-treated temperature. On the other hand, the H3BO3/H3PO4 ratios were less than 0.8, the main phase became silicon phosphate, which TG curve had weight loss about 1100℃ caused by the decomposition reaction. The conductivity showed less dependence on heat-treated temperature. The maxium conductivity of sample with water is 1.19×10-2 (S/cm).

並列關鍵字

sol-gel method ； glass-ceramics ； boron phosphate ； silicon phosphate

參考文獻

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