Seals glass-ceramic

Glass Ceramics Sealing Glasses Catalyst Supports Fiber Optic Preforms Contolled Pore Glasses... 

In addition to the aforementioned interactions with the surrounding gas environments, metallic interconnects also interact with adjacent components at their interfaces, potentially causing degradation of metallic interconnects and affecting the stability of the interfaces. One typical example is the rigid glass-ceramic seals, in particular those made from barium-calcium-aluminosilicate (BCAS) base glasses [205-209], FSS interconnect candidates have been shown to react extensively with... 

The Ba0-Ca0-Al203-Si02 (BCAS) glass ceramic seal is often used for joining dissimilar materials, i.e. ceramic cells, metallic manifolds and metallic interconnects [2]. The ceramic seal should possess a satisfactory matching of the thermal expansion coefficient with the cells and the chosen alloy and it should also exhibit a long-term stability under the operation conditions. 

If the atmosphere is changed to Ar-H2-H20, a different interaction pattern between steel and glass-ceramic seals can be found. Fig. 7 presents the cross sections of the steel plates covered with glass. 

Although further detailed investigations are definitely needed to obtain a glass-ceramic sealing material, the above preliminary investigation demonstrated that the properties of the newly developed glass can be well adjusted through the crystallization control process. 

Glass ceramics Sealing glasses Cafalysf supports Fiber-optic preforms Controlled pore glasses... 

However, glass-ceramic seals also exhibit disadvantages ... 

Glass Ceramics Sealing Glasses 1 Catalyst Supports j Fiber Optic Preforms j... 

As seen in Chap. 6, the interaction of seal glass with metallic interconnect is much more severe due to chromate formations. The current chapter is a continuation of Chap. 6, which focuses on the chemical compatibiUly of glass/glass-ceramic seals with the mixed alkaline earth glasses. In addition, the spinel-coated interconnects and their interaction with glasses have been discussed. 

E. Stephens, J. Vetrano, B. Koeppel, Y. Chou, X. Sun, M. Khaleel, Experimental characterization of glass-ceramic seal properties and their constitutive implementation in solid oxide fuel cell stack models. J. Power Sources 193(2), 625-631 (2009)... 

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