Thermal and crystallization kinetics of yttrium and lanthanum calcium silicate glass sealants for solid oxide fuel cells

Vishal Kumar; Rupali; O. P. Pandey; K. Singh

doi:10.1016/j.ijhydene.2011.05.124

Thermal and crystallization kinetics of yttrium and lanthanum calcium silicate glass sealants for solid oxide fuel cells

Vishal Kumar
, Rupali
, O. P. Pandey
, K. Singh

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

The crystallization kinetics of glass sealants is an essential parameter to check the suitability of glass as a sealant. The crystallization kinetic behavior of calcium borosilicate glasses were studied by Differential thermal analysis (DTA), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). These glasses were exposed for different heat treatment durations in oxidizing atmosphere at 800 and 900 °C. XRD results indicate the presence of La₂SiO₅ crystalline phase which increases the thermal expansion of the glasses. However, yttria doped calcium borosilicate glass (CaY) sample could not form any crystalline phase even after 10 h heat treatment at 900 °C. Moreover, the thermal expansion coefficient (TEC), viscosity values and fragility index of the glasses indicate that lanthanum doped calcium borosilicate glass (CaLa) might be a better glass sealant for solid oxide fuel cell as compared to CaY glass.

Original language	English
Pages (from-to)	14971-14976
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	22
DOIs	https://doi.org/10.1016/j.ijhydene.2011.05.124
State	Published - Nov 2011
Externally published	Yes

Keywords

Differential thermal analysis
Glass
Transition temperature

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10.1016/j.ijhydene.2011.05.124

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@article{281a5d0658f8451a9ae82c9c75889c8f,

title = "Thermal and crystallization kinetics of yttrium and lanthanum calcium silicate glass sealants for solid oxide fuel cells",

abstract = "The crystallization kinetics of glass sealants is an essential parameter to check the suitability of glass as a sealant. The crystallization kinetic behavior of calcium borosilicate glasses were studied by Differential thermal analysis (DTA), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). These glasses were exposed for different heat treatment durations in oxidizing atmosphere at 800 and 900 °C. XRD results indicate the presence of La2SiO5 crystalline phase which increases the thermal expansion of the glasses. However, yttria doped calcium borosilicate glass (CaY) sample could not form any crystalline phase even after 10 h heat treatment at 900 °C. Moreover, the thermal expansion coefficient (TEC), viscosity values and fragility index of the glasses indicate that lanthanum doped calcium borosilicate glass (CaLa) might be a better glass sealant for solid oxide fuel cell as compared to CaY glass.",

keywords = "Differential thermal analysis, Glass, Transition temperature",

author = "Vishal Kumar and Rupali and Pandey, \{O. P.\} and K. Singh",

note = "Funding Information: The financial support provided by Department of Science and Technology (DST), Govt of India , under the scheme SR/S2/CMP-48/2004 is greatly acknowledged. One of the authors (Vishal Kumar) would also like to acknowledge CSIR for their financial assistance.",

year = "2011",

month = nov,

doi = "10.1016/j.ijhydene.2011.05.124",

language = "English",

volume = "36",

pages = "14971--14976",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd.",

number = "22",

}

TY - JOUR

T1 - Thermal and crystallization kinetics of yttrium and lanthanum calcium silicate glass sealants for solid oxide fuel cells

AU - Kumar, Vishal

AU - Rupali,

AU - Pandey, O. P.

AU - Singh, K.

N1 - Funding Information: The financial support provided by Department of Science and Technology (DST), Govt of India , under the scheme SR/S2/CMP-48/2004 is greatly acknowledged. One of the authors (Vishal Kumar) would also like to acknowledge CSIR for their financial assistance.

PY - 2011/11

Y1 - 2011/11

N2 - The crystallization kinetics of glass sealants is an essential parameter to check the suitability of glass as a sealant. The crystallization kinetic behavior of calcium borosilicate glasses were studied by Differential thermal analysis (DTA), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). These glasses were exposed for different heat treatment durations in oxidizing atmosphere at 800 and 900 °C. XRD results indicate the presence of La2SiO5 crystalline phase which increases the thermal expansion of the glasses. However, yttria doped calcium borosilicate glass (CaY) sample could not form any crystalline phase even after 10 h heat treatment at 900 °C. Moreover, the thermal expansion coefficient (TEC), viscosity values and fragility index of the glasses indicate that lanthanum doped calcium borosilicate glass (CaLa) might be a better glass sealant for solid oxide fuel cell as compared to CaY glass.

AB - The crystallization kinetics of glass sealants is an essential parameter to check the suitability of glass as a sealant. The crystallization kinetic behavior of calcium borosilicate glasses were studied by Differential thermal analysis (DTA), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). These glasses were exposed for different heat treatment durations in oxidizing atmosphere at 800 and 900 °C. XRD results indicate the presence of La2SiO5 crystalline phase which increases the thermal expansion of the glasses. However, yttria doped calcium borosilicate glass (CaY) sample could not form any crystalline phase even after 10 h heat treatment at 900 °C. Moreover, the thermal expansion coefficient (TEC), viscosity values and fragility index of the glasses indicate that lanthanum doped calcium borosilicate glass (CaLa) might be a better glass sealant for solid oxide fuel cell as compared to CaY glass.

KW - Differential thermal analysis

KW - Glass

KW - Transition temperature

UR - https://www.scopus.com/pages/publications/80054023641

U2 - 10.1016/j.ijhydene.2011.05.124

DO - 10.1016/j.ijhydene.2011.05.124

M3 - Article

AN - SCOPUS:80054023641

SN - 0360-3199

VL - 36

SP - 14971

EP - 14976

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 22

ER -

Thermal and crystallization kinetics of yttrium and lanthanum calcium silicate glass sealants for solid oxide fuel cells

Abstract

Keywords

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