کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1293969 | 973584 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal stability of a new solid oxide fuel/electrolyzer cell seal glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Long-term thermal stability of sealing glass is critical for hermetic seals of solid oxide fuel and electrolyzer cell stacks. In this work, a SrO-La2O3-Al2O3-SiO2 glass (SABS-0 glass) has been evaluated as a high temperature sealant by thermal treatment. Powder and bulk SABS-0 glasses are studied in both air and H2/H2O atmospheres at 800 °C for up to 1000 h. Weight measurements show negligible SABS-0 glass vaporization during the thermal treatment. Both SABS-0 powder and bulk samples show some surface devitrification but the SABS-0 glass bulk remains amorphous at all the thermal treatment conditions. On the polished bulk SABS-0 surface, needle-shaped crystals are observed for both the air and the H2/H2O thermal treatment conditions. Polishing is believed to be the initiator for the SABS-0 glass surface devitrification. The crystalline phases, indentified as silicates and aluminates, increase with the thermal treatment time. However, the crystalline phases on the polished SABS-0 glass surface are very limited and only exist on the very surface of both the air and the H2/H2O atmosphere treated samples. The SABS-0 glass has excellent thermal stability in solid oxide fuel/electrolyzer operating environments and is a promising sealant material for such applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 195, Issue 1, 1 January 2010, Pages 195-203
Journal: Journal of Power Sources - Volume 195, Issue 1, 1 January 2010, Pages 195-203
نویسندگان
T. Jin, K. Lu,