| BaO-Al2O3-B2O3系密封玻璃的结构与性质 |
| Structure and Properties of BaO-Al2O3-B2O3 Glass Sealants |
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| 关键词: 固体氧化物燃料电池 密封 BaO-Al2O3-B2O3 红外光谱 |
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| Abstract: The BaO-Al2O3-B2O3 glasses manufactured for solid oxide fuel cell(SOFC) sealing were studied. The effect of different nBaO/nB2O3 on crystal, thermal properties, density and infrared spectra of this system has been discussed. The results show that the trends of crystallization, glass transformation temperature, dilatometric softening temperature and density increase with nBaO/nB2O3 values. But a typical property deviation occurs when nBaO/nB2O3 is 0.875, and its coefficient of thermal expansion has the maximum at this point. The changes of properties can attribute to the conversion of boron from tetrahedral coordination to trigonal, breakage of the local glass network and interaction between the network modifiers. These can be proved by infrared spectra of glasses. Thermal properties of some studied samples are suitable for the sealing of SOFC using Sm doped ceria electrolyte and operating at 400～600 ℃. |
| Keywords: solid oxide fuel cells sealing BaO-Al2O3-B2O3 infrared spectra |
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| 曾凡蓉,高瑞峰,毛宗强,邱海鸥.BaO-Al2O3-B2O3系密封玻璃的结构与性质[J].无机化学学报,2008,24(5):808-812. |
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