Effect of sintering on mechanical properties of ceria reinforced yttria stabilized zirconia

Maurya, Rita; Gupta, Abhay; Omar, Shobit; Balani, Kantesh

doi:10.1016/j.ceramint.2016.04.069

Cited by 25 publications

(14 citation statements)

References 30 publications

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“…Mekni et al 101 studied the polycrystalline α-alumina and YSZ characterization by SEM to measure the charge dynamic and discharge dynamic during and after irradiation, respectively for these insulating materials. Maurya et al 104 studied the effect of CeO 2 dopant in 8 mol% 8YSZ, which processed through spark plasma sintering (SPS) and pressureless conventional sintering (CS). The stability of trapped electron leads to many properties such as electronic structure and internal stresses effect.…”

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

“…104,121 Frison et al 83 fabricated the biphasic amorphous crystalline thin film of YSZ microstructure~200 nm thick with homogenous and dense structure via RF-sputtering method to maintain the mechanical properties in thick size. To get higher ionic conductivity, one solution is to provide thick electrolyte to reduce the ohmic resistance effect.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…At the low sintering temperature, the dissolution of dopant promoted the fusion and bonding of YSZ electrolyte. Maurya et al 104 claimed the conventional pressure less sintering method produced YSZ electrolyte with higher reduced modulus and hardness compare to spark plasma sintered. Maurya et al 104 claimed the conventional pressure less sintering method produced YSZ electrolyte with higher reduced modulus and hardness compare to spark plasma sintered.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The mechanical characteristics of YSZ improved in the presence of manganese dopants. Maurya et al 104 studied the effect of CeO 2 dopant in 8 mol% 8YSZ, which processed through spark plasma sintering (SPS) and pressureless conventional sintering (CS). The CS process produced 8YSZ electrolyte better than SPS in terms of reduced modulus and hardness.…”

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

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A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

et al. 2019

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Solid Oxide Fuel Cells (SOFCs) are an electrochemical energy converter that receives the world's attention as a power generation system of the future owing to its flexibility to consume various types of fuels, low emission of greenhouses gases, and having high efficiency reaching over 70%. A conventional SOFCs operates at high temperature, typically ranges between 800 to 1000°C. SOFCs use yttria-stabilized zirconia (YSZ) as the electrolyte, which exhibits excellent oxide ion conductivity in this temperature range. However, this temperature range poses an issue to SOFCs durability, as it leads to the degradation of the cell components. In addition, SOFCs application is limited and difficult to implement for the transportation sector and portable appliance. A viable solution is to lower the SOFCs operating temperature to intermediate (600 to 800°C ) or low (<600°C) operating temperature. The benefit of this way, cell durability will improve, as well as other advantages such as facilitates handling, assembling, dismantling, cost reduction, and expanded the SOFCs application. Nonetheless, the key challenge for the issue is finding suitable electrolyte, as YSZ have lower ionic conductivity at low and intermediate temperature range. The aim of this paper is to review the status and challenges in the attempts made to modify YSZ electrolyte within the past decade. The resulting ionic conductivity, microstructure, and densification, mechanical and thermal properties of these 'new' electrolytes critically reviewed. The targeted conductivity of modification of YSZ electrolyte must be exceeded >0.1 S cm -1 to enable high performance of SOFCs power generation systems to be realized for transportation and portable applications. Based on our knowledge, this paper is the first review which focused on the recent status and challenges of YSZ electrolyte towards lowering the operating temperature.

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Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

See 2 more Smart Citations

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

et al. 2019

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“…Одним из методов оптимизации механических характеристик мате-риала является введение нескольких стабилизирующих оксидов, в частности, солегирование оксидами иттрия и церия. Так, в работах [7][8][9] изучали механические свойства керамических материалов на основе диоксида циркония, солегированных Y 2 O 3 и CeO 2 в зависимости от состава, зеренной структуры и условий синтеза.…”

Section: Introductionunclassified

Влияние валентного состояния ионов Ce на фазовую стабильность и механические свойства кристаллов твердых растворов на основе ZrO-=SUB=-2-=/SUB=-

Борик¹,

Бублик²,

Еремина³

et al. 2017

Физика Твердого Тела

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Проведено исследование структуры и механических свойств кристаллов твердых растворов диоксида циркония, стабилизированных оксидами иттрия и церия. Для идентификации ионов Ce3+ и их относительного количества в кристаллах использовали метод электронного парамагнитного резонанса. Показано, что основным фактором, определяющим высокое значение трещиностойкости кристаллов, является присутствие в них ионов Сe3+. Проведенные в работе отжиги, приводящие к уменьшению концентрации ионов Ce3+ подтверждают, что при изменении валентного состояния ионов церия значения трещиностойкости кристаллов уменьшаются. Работа выполнена при поддержке гранта РФФИ N 16-02-00742 А, и N 15-38-70053 мол\_а\_мос. DOI: 10.21883/FTT.2017.10.44958.101

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Anelastic and Electromechanical Properties of Doped and Reduced Ceria

2018

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Room-temperature mechanical properties of thin films and ceramics of doped and undoped ceria are reviewed with an emphasis on the anelastic behavior of the material. Notably, the unrelaxed Young's modulus of Gd-doped ceria ceramics measured by ultrasonic pulse-echo techniques is >200 GPa, while the relaxed biaxial modulus, calculated from the stress/strain ratio of thin films, is ≈10 times smaller. Oxygen-deficient ceria exhibits a number of anelastic effects, such as hysteresis of the lattice parameter, strain-dependent Poisson's ratio, room-temperature creep, and nonclassical electrostriction. Methods of measuring these properties are discussed, as well as the applicability of Raman spectroscopy for evaluating strain in thin films of Gd-doped ceria. Special attention is paid to detection of the time dependence of anelastic effects. Both the practical advantages and disadvantages of anelasticity on the design and stability of microscopic devices dependent on ceria thin films are discussed, and methods of mitigating the latter are suggested, with the aim of providing a cautionary note for materials scientists and engineers designing devices containing thin films or bulk ceria, as well as providing data-based constraints for theoreticians who are involved in modeling of the unusual electrical and electromechanical properties of undoped and doped ceria.

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Effect of sintering on mechanical properties of ceria reinforced yttria stabilized zirconia

Cited by 25 publications

References 30 publications

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

Влияние валентного состояния ионов Ce на фазовую стабильность и механические свойства кристаллов твердых растворов на основе ZrO-=SUB=-2-=/SUB=-

Anelastic and Electromechanical Properties of Doped and Reduced Ceria

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