Glasses with composition 50BaO-(5-x) Al2O3-xR2O3–30B2O3–15SiO2 (x = 0,5 and R = Nd, Gd, La, Dy) have been synthesized by conventional melt quenching method. Controlled crystallization has been carried out to convert these glasses to corresponding glass-ceramics. X-ray diffraction (XRD) technique has been used to identify the crystalline phases formed in glass-ceramics. Archimede's method has been used to measure the density of glass-ceramics. The co-efficient of thermal expansion of all glass-ceramics lie within the range (11.60 – 12.81) x 10−6/°C, which matches with that of the other components of solid oxide fuel cell. The interaction study of glass-ceramics with Crofer22APU interface and Crofer22APU/Glass-ceramic/Crofer22APU showed no evidence of interfacial failure and cracks. Hence the prepared glass-ceramics can be considered as a suitable candidate for sealant materials in SOFC applications.
- Co-efficient of thermal expansion (CTE)
- X-ray diffraction (XRD)