Mixed alkaline earth modifiers effect on thermal, optical and structural properties of SrO-BaO-SiO2-B2O3-ZrO2 glass sealants

Walia, Trisha; Singh, K.

doi:10.1016/j.jnoncrysol.2021.120812

Cited by 31 publications

(10 citation statements)

References 50 publications

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“…Both the parameters are opposite to each other [18]. SE and A800 both have near about the same hardness and fracture toughness, while H20 has the highest hardness which may be due to the higher concentration of Al2O3 and MgO which contains higher bond strength as compared to other modifiers and which enhance the compactness in the structure and increase the hardness [18][19][20].…”

Section: Mechanical Properties 351 Hardness and Fracture Toughnessmentioning

confidence: 95%

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Kumar

Kumar²,

Singh³

2023

J. Phys.: Conf. Ser.

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Windshield glasses of Maruti Alto 800 (A800), Hyundai i20 (H20), and Maruti Suzuki Eeco (SE) are taken from an automotive repair shop for investigating their physical, optical, and mechanical properties to check their durability. These glasses are amorphous, which is confirmed by X-ray diffraction (XRD). Energy dispersive spectroscopy confirms that the windshield glasses contain SiO2, Na2O, MgO, CaO, Al2O3, and K2O in variable atomic percentages. The optical bandgap, refractive index, and Urbach energy are calculated using UV-Vis spectroscopy. The highest optical band gap is observed for SE. Micro Vickers hardness test is used to study the fracture toughness and hardness of the glasses. It is found that H20 has the highest hardness as well as toughness in all the windshield glasses.

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Section: Mechanical Properties 351 Hardness and Fracture Toughnessmentioning

confidence: 95%

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Kumar

Kumar²,

Singh³

2023

J. Phys.: Conf. Ser.

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“…Annealed glass pieces of dimensions 20 × 20 × 5 mm were finally heat‐treated at ∼900 ± 10°C for 2 h to produce the glass‐ceramics. The heat treatment temperature here simulates the intermediate temperature SOFC conditions 14 . As mentioned before, mica‐based glass sealants are applied as paste at room temperature and subsequently heat‐treated at 900°C during the first cycle of SOFC operation where it converts to glass‐ceramics 3 .…”

Section: Methodsmentioning

confidence: 99%

“…The heat treatment temperature here simulates the intermediate temperature SOFC conditions. 14 As mentioned before, mica-based glass sealants are applied as paste at room temperature and subsequently heat-treated at 900 • C during the first cycle of SOFC operation where it converts to glassceramics. 3 Afterwards, the SOFC operation is carried out at ∼800 • C. Accordingly, the base glasses (NPG-1, 2, and 3) are heat treated in the present study at 900 • C in order to replicate the first cycle of SOFC operation.…”

Section: Methodsmentioning

confidence: 99%

Performance evaluation for Ag and Au nanoparticle containing K₂O‐MgO‐B₂O₃‐Al₂O₃‐SiO₂‐F glass sealants for SOFC application

Garai

Roy

2023

Int J Ceramic Engine & Sci

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The present work illustrates the effect of Ag and Au nanoparticle addition on the density, microstructure, phase formation and thermal performance of K 2 O-MgO-B 2 O 3 -Al 2 O 3 -SiO 2 -F glass-ceramics considered as a potential sealant material for solid oxide fuel cell (SOFC) applications. Addition of 0.2 wt.% Ag and Au nanoparticles caused a steep increase in the density of the base glasses in comparison to the glass containing an equivalent amount (0.2 wt%) of Cu nanoparticle. The glass-ceramics were prepared from the base glasses by controlled heat treatment at 900 • C, a temperature relevant for SOFC operation. They were multicrystalline having fluorophlogopite (KMg 3 AlSi 3 O 10 F 2 ) as the predominant crystal phase and norbergite (Mg 2 SiO 4 .MgF 2 ) and enstatite (MgSiO 3 ) as additional phases. Fluorophlogopite crystals form in both platelike and rod-like morphologies within the glass matrix in the microstructure of the glass-ceramics. The size of the plate-shaped fluorophlogopite crystals increases for Ag nanoparticles containing glass-ceramics in comparison to either Cu or Au nanoparticles containing glass-ceramics. The density of the Ag and Au nanoparticle glass-ceramics are also considerably higher due to the formation of a compact interlocked crystalline microstructures. The Au nanoparticle containing glass-ceramics is characterized by a large thermal expansion (coefficient of thermal expansion, CTE= 11.29 × 10 −6 /K in 50-800 • C range) which is comparable to other SOFC components. This glass/glass-ceramics sealant also possess maximum volume shrinkage in the range of 30-900 • C as well as nearly constant CTE without any considerable decrease up to 10 cycles of SOFC operations making it suitable for SOFC sealant applications. K E Y W O R D Scoefficient of thermal expansion, glass-ceramics, microstructure, sealing materials, solid oxide fuel cells (SOFCs) This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Many works are reported regarding glasses with SrO for sealant application in the SOFC 179–192 However, its high contents may create some limitations as sealing material 183 . In a glass system, the role of SrO depends on initial composition; mostly, it acts as a modifier in the glass.…”

Section: Effect Of Different Glass Constituents On Sealing Propertiesmentioning

confidence: 99%

“…In addition, all sealing couples show good joining after being held at 750 C for 1000 hours. 178 SrO-containing glass sealant Many works are reported regarding glasses with SrO for sealant application in the SOFC [179][180][181][182][183][184][185][186][187][188][189][190][191][192] However, its high contents may create some limitations as sealing material. 183 In a glass system, the role of SrO depends on initial composition; mostly, it acts as a modifier in the glass.…”

mentioning

confidence: 99%

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

Singh

Walia

2021

Intl J of Energy Research

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A lot of research is going on in the field of glass science to commercialize solid oxide fuel cells (SOFCs). Still, it is a big challenge to develop appropriate glass sealants for a longer duration and sustaining in the operating conditions of this power source. Mixed alkaline earth metal oxides containing silicate or borosilicate glasses could be most suitable as a rigid glass sealant in SOFCs in comparison with borate-and phosphate-based glass sealants. In this review article, the need for the sealants in the planar design of SOFCs, the effect of different modifiers, and intermediate oxides on sealing properties of glasses and glassceramics, particularly, silicate-and borosilicate-based glass sealants have been reviewed. Interaction study of glass sealants with common electrolytes and interconnect materials is also overviewed in this article. In addition to these, future perspectives and suggestions for suitable seal development are also proposed. Novelty statementThis review article is related to the glass sealants for a highly efficient and environment friendly solid oxide fuel cell energy conversion device. Still, it is a big challenge to develop an appropriate sealant to commercialize this energy device. This article provides the researchers with not only progress and latest development in the field of glass sealants but also suggestion and future prospects to develop the sealants.

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Mixed alkaline earth modifiers effect on thermal, optical and structural properties of SrO-BaO-SiO2-B2O3-ZrO2 glass sealants

Cited by 31 publications

References 50 publications

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Performance evaluation for Ag and Au nanoparticle containing K₂O‐MgO‐B₂O₃‐Al₂O₃‐SiO₂‐F glass sealants for SOFC application

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

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Mixed alkaline earth modifiers effect on thermal, optical and structural properties of SrO-BaO-SiO2-B2O3-ZrO2 glass sealants

Cited by 31 publications

References 50 publications

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Physical, optical, and mechanical properties of commercially available windshield glasses using various cars

Performance evaluation for Ag and Au nanoparticle containing K2O‐MgO‐B2O3‐Al2O3‐SiO2‐F glass sealants for SOFC application

Review on silicate and borosilicate‐based glass sealants and their interaction with components of solid oxide fuel cell

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Product

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Performance evaluation for Ag and Au nanoparticle containing K₂O‐MgO‐B₂O₃‐Al₂O₃‐SiO₂‐F glass sealants for SOFC application