标题: 溶胶凝胶法制备质导陶瓷薄膜与粉体之特性研究
Synthesis and Characterization of Sol-Gel Derived Proton Conducting Ceramic Thin Films and Powders
作者: 邱尊伟
Chiu, Tsun-Wei
林鹏
吴朴伟
Lin, Pang
Wu, Pu-Wei
材料科学与工程学系所
关键字: 质导陶瓷;溶胶凝胶法;氢气分离薄膜;proton conducting ceramic;sol-gel method;hydrogen separation membrane
公开日期: 2012
摘要: 本研究利用溶胶凝胶法制作管型质导陶瓷复合薄膜的陶瓷膜层.并所选用之组成为BaCe0.4Zr0.4Gd0.1Dy0.1O3-x做为质导陶瓷材料.在陶瓷粉体部分:已成功利用溶胶凝胶法在1350oC制备陶瓷粉末.并经由XRD确认之烧结成相情形.再经由TGA确认,其在30~600oC操作温度及二氧化碳环境下的化学稳定性,在测试结果中显示,BaCe0.4Zr0.4Gd0.1Dy0.1O3-x粉体未与CO2反应,在薄膜部分:利用溶胶凝胶法将前驱物溶液混合PVA后(混合比例为6wt%)配制成浆料,并利用沉浸涂布法(Dip-coating)将此前驱物涂布于片状基材上,以便于于观察其表面形貌与薄膜成相情形.在1000oC下锻烧.并经由SEM观察下发现基材表面已经一层陶瓷膜形成且并未看到明显裂痕.藉由XRD看出perovskite已成相且并无杂相并与所合成之粉末绕射峰位置相同.而根据粉体的TGA测试,此薄膜不会与CO2反应,推论此新组成可用于CO2-H2分离膜之用.
A sol-gel method is adopted to prepare proton conducting ceramics in tubular thin films and powder forms. The targeted composition for the proton conducting ceramics is BaCe0.4Zr0.4Gd0.1Dy0.1O3-xand the as-synthesized samples undergo characterizations including XRD, TGA, SEM. The XRD patterns indicate a perovskite structure after sintering at elevated temperature. In addition, TGA analysis confirms that the sample is chemically stable against CO2 at temperatures of 30 to 600oC. The ceramic thin film is deposited on a tubular alumina substrate by multiple steps of dip coating and sintering. We have successfully prepared uniform ceramic thin film at reduced thickness without noticeable cracks.
URI: http://140.113.39.130/cdrfb3/record/nctu/#GT079918551
http://hdl.handle.net/11536/49644
显示于类别:Thesis


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