Laser processing of ceramic materials for electrochemical and high temperature energy applications

Merino, Rosa I.; Laguna‐Bercero, M. A.; Lahoz, Ruth; Larrea, Á.; Oliete, Patricia B.; Orera, Alodia; Peña, José; Sanjuán, M. L.; Sola, D.

doi:10.1016/j.bsecv.2021.09.007

Cited by 9 publications

(5 citation statements)

References 151 publications

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“…Furthermore, the presence of this roughness may enhance the electrode and electrolyte adhesion. The specific goal of this work was to reproduce laser tracks within the typical range of energy density (3.3-6.4 J/cm 2 ) [31,49,58] for SOFC materials with good surface quality to analyze the damage and possible microstructure changes. Accordingly, laser parameters selected for the processing of laser tracks were at 4.3 J/cm 2 and 1.0 kHz, thus obtaining a valley depth close to 2 µm with a roughness lower than 0.20 µm and a minimized pile-up size.…”

Section: Surface Topographymentioning

confidence: 99%

Laser Machining of Nickel Oxide–Yttria Stabilized Zirconia Composite for Surface Modification in Solid Oxide Fuel Cells

Morales,

García-González,

Plch

et al. 2023

Crystals

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Laser machining of the nickel oxide–yttria-stabilized zirconia (NiO–YSZ) composite in Solid Oxide Fuel Cells (SOFCs) may be an effective approach to enlarge the electrode–electrolyte interface and improve the cell performance. However, laser energy can cause thermal damage to the composite surface during the machined operation. In this work, the microstructure changes and the collateral damage caused by pulsed laser machining on the sintered NiO–YSZ of the state-of-the-art SOFCs were evaluated using complementary analysis techniques. Laser patterns consisting of parallel tracks on sintered NiO–YSZ were processed, varying the laser parameters such as frequency and laser beam energy density. The analyses evidenced a heat-affected zone (HAZ) limited to around 2 µm with microcracking, porosity reduction, and recrystallization. The changes in chemical composition, phase transformation of YSZ and mechanical properties at the machined surface were quite limited.

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Section: Surface Topographymentioning

confidence: 99%

Laser Machining of Nickel Oxide–Yttria Stabilized Zirconia Composite for Surface Modification in Solid Oxide Fuel Cells

Morales,

García-González,

Plch

et al. 2023

Crystals

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“…Interest in refractory oxide ceramics has recently been shown to be quite large due to the possibility of using them as structural materials suitable for operation under extreme conditions, such as high temperatures, radiation background, high mechanical loads, etc. [1][2][3]. At the same time, much attention is paid not only to the search for practical applications, as well as to the determination of the limits of applicability of refractory oxide ceramics, but also to the fundamental study of the processes of ceramic formation, as well as the relationship between methods for their preparation and modification with strength and thermophysical parameters [4,5].…”

Section: Introductionmentioning

confidence: 99%

Study of the Mechanisms of Polymorphic Transformations in Zirconium Dioxide upon Doping with Magnesium Oxide, as Well as Establishing the Relationship between Structural Changes and Strength Properties

Kurakhmedov,

Morzabayev,

Tleubay

et al. 2023

Ceramics

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The aim of this work is to study the mechanisms of polymorphic transformations in ZrO2 ceramics doped with MgO with different concentrations during thermal isochronous annealing, as well as the effect of the phase composition of ceramics on the change in strength properties and resistance to mechanical stress. Solving the problem of polymorphic transformations in zirconium dioxide by doping them with MgO will increase the resistance of ceramics to external influences, as well as increase the mechanical strength of ceramics. According to the data of X-ray phase analysis, it was found that the addition of the MgO dopant to the composition of ceramics at the chosen thermal annealing temperature leads to the initialization of polymorphic transformation processes, while changing the dopant concentration leads to significant differences in the types of polymorphic transformations. In the case of an undoped ZrO2 ceramic sample, thermal annealing at a temperature of 1500 °C leads to structural ordering due to the partial removal of deformation distortions of the crystal lattice caused by mechanochemical grinding. During the study of the effect of MgO doping and polymorphic transformations in ZrO2 ceramics on the strength properties, it was found that the main hardening effect is due to a change in the dislocation density during the formation of a ZrO2/MgO type structure. At the same time, polymorphic transformations of the m—ZrO2 → t—ZrO2 type have a greater effect on hardening at low dopant concentrations than t—ZrO2 → c—ZrO2 type transformations.

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“…The precise adjustment of the main parameters of laser irradiation allows precise control of the penetration depth of laser light, size, and temperature in the area of its impact. In addition, laser treatment ensures high production efficiency and low economic costs [34]. The unique capabilities of laser and inkjet printing allow precise control of the porosity and thickness of the layers and a one-pot procedure to fabricate SOFCs with a complex gradient microstructure.…”

Section: Introductionmentioning

confidence: 99%

An Anode-Supported Solid Oxide Fuel Cell (SOFC) Half-Cell Fabricated by Hybrid 3D Inkjet Printing and Laser Treatment

et al. 2023

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A NiO-10YSZ/10YSZ half-cell for anode-supported solid oxide fuel cells (SOFCs) was fabricated using 3D inkjet printing and layer-by-layer laser treatment of printing compositions followed by thermal sintering by a co-firing method. The optimal granulometric composition and rheological characteristics of the printing compositions to fabricate the NiO-10YSZ (60:40 wt.%) anode support, NiO-10YSZ (40:60 wt.%) anode functional layer (AFL), and 10YSZ electrolyte were determined. Effects of the pore former and laser post-treatment on the morphology of the as-prepared anodes for the manufacture of SOFC anode supports were studied, and the optimum laser exposure for hybrid 3D printing was determined. A mechanism of influence of the exposure of laser post-treatment on the morphology of the NiO-10YSZ anode supports has been proposed. The mass content of 10YSZ and the number of layers were shown to affect the surface microstructure and the thickness of the thin-film electrolytes deposited on the surface of the anode supports. The hybrid inkjet 3D printing offers great opportunities as it allows a one-pot procedure to fabricate a NiO-10YSZ/10YSZ SOFC half-cell for SOFC anode supports.

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Laser processing of ceramic materials for electrochemical and high temperature energy applications

Cited by 9 publications

References 151 publications

Laser Machining of Nickel Oxide–Yttria Stabilized Zirconia Composite for Surface Modification in Solid Oxide Fuel Cells

Laser Machining of Nickel Oxide–Yttria Stabilized Zirconia Composite for Surface Modification in Solid Oxide Fuel Cells

Study of the Mechanisms of Polymorphic Transformations in Zirconium Dioxide upon Doping with Magnesium Oxide, as Well as Establishing the Relationship between Structural Changes and Strength Properties

An Anode-Supported Solid Oxide Fuel Cell (SOFC) Half-Cell Fabricated by Hybrid 3D Inkjet Printing and Laser Treatment

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