Lithography-based additive manufacturing of porosity graded alumina

Nohut, Serkan; Geier, Sebastian; Kraleva, Irina; Schwentenwein, Martin; Bermejo, Raúl

doi:10.1016/j.addlet.2022.100060

Cited by 7 publications

(5 citation statements)

References 17 publications

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“…The corresponding plate diameter and gap between plates were 25 and 0.5 mm. To characterize the rheological behavior, the change of dynamic viscosity was monitored as a function of shear rate ranging from 0.1 to 1000 s −1 48 …”

Section: Methodsmentioning

confidence: 99%

“…The newly developed LCM multi‐material printer CeraFab Multi 2M30 specifically enables introduction of complex gradients of porosity in the microstructure in a single process. The printer offers two approaches for multi‐material printing 48 . In the layer‐by‐layer approach, each individual layer can be printed by any of two materials.…”

Section: Toward 3d‐printed Designs With Spatially Resolved Porositymentioning

confidence: 99%

“…The printer offers two approaches for multi-material printing. 48 In the layer-by-layer approach, each individual layer can be printed by any of two materials. With this approach, the multilayered and sandwich structures can be printed.…”

Section: Toward 3d-printed Designs With Spatially Resolved Porositymentioning

confidence: 99%

“…To characterize the rheological behavior, the change of dynamic viscosity was monitored as a function of shear rate ranging from 0.1 to 1000 s −1 . 48 The samples were printed with a layer thickness of 25 or 50 μm using multi-material printer CeraFab Multi 2M30 developed by Lithoz GmbH. 49 The CeraFab Multi 2M30 has a lateral resolution of 35 μm.…”

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confidence: 99%

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3D‐printed alumina‐based ceramics with spatially resolved porosity

Nohut,

Schlacher,

Kraleva

et al. 2023

Int J Applied Ceramic Tech

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The interest on porous ceramics has increased in the last years with the developments in additive manufacturing methods, enabling design of components with complex geometries for membranes, filters, catalytic converters, or biostructures. In this study, porous alumina samples were produced by using different concentrations of poly(methyl methacrylate) as pore‐forming agent in a photocurable slurry via vat photopolymerization. The effect of layer thickness, poly(methyl methacrylate) particle size and sintering temperature on the mechanical properties and microstructural features of the samples was investigated as a function of poly (methyl methacrylate) concentration.. It is shown that the mechanical properties of 3D‐printed porous alumina are comparable with those fabricated by conventional processes. The Young's modulus, fracture toughness as well as the biaxial strength decreased with increasing weight concentration of pore forming agent (resulting in an increased total porosity). Specially using smaller poly(methyl methacrylate) particles has a positive effect, resulting in higher Young's modulus as well as fracture toughness. The feasibility of vat photopolymerization for fabricating novel parts with more complex porosity regions is explored by printing multi‐material samples and porosity graded architectures. The counterbalance effect between porosity and mechanical properties may be optimized by tailoring material composition and processing parameters.This article is protected by copyright. All rights reserved

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Section: Methodsmentioning

confidence: 99%

Section: Toward 3d‐printed Designs With Spatially Resolved Porositymentioning

confidence: 99%

Section: Toward 3d-printed Designs With Spatially Resolved Porositymentioning

confidence: 99%

mentioning

confidence: 99%

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3D‐printed alumina‐based ceramics with spatially resolved porosity

Nohut,

Schlacher,

Kraleva

et al. 2023

Int J Applied Ceramic Tech

Self Cite

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“…3b and c correspondingly. With the help of a within-layer approach, it is possible to use two different materials on the same layer [60]. For the fabrication of porosity graded alumina samples, commercially available alumina slurry LithaLox 350 (Lithoz GmbH, Austria) with a volumetric alumina powder content of 49% was used.…”

Section: Plates Structured By Dense and Porous Alumina Ceramics (2com...mentioning

confidence: 99%

Mid-infrared optical coherence tomography as a method for inspection and quality assurance in ceramics additive manufacturing

Zorin

Brouczek²,

Geier³

et al. 2022

Open Ceramics

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Additive Manufacturing of Composite Materials and Functionally Graded Structures Using Archerfish Hunting Technique

Prakash,

Koushik,

Jha

et al. 2024

Lubrication Science

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This paper proposes an optimisation method for fabricating composite materials and functionally graded structures. Using the proposed method, 3D printing of copper (Cu)–polyethylene (PE) composite, Al2O3–ZrO2 ceramic composite and functionally graded CuO foams are utilised. This work aims to advance the capabilities of additive manufacturing by leveraging nature‐inspired approaches to create complex, tailored structures with enhanced performance across various industries. The major objective of the proposed method is to reduce the feed rate and increase the airflow rate and airflow temperature for the heat transfer process. Using the proposed technique in the advanced preparation conditions, Cu–PE composites with unreliable Cu substances are fabricated. The PE binder particle is melting as well as forming thick composites by means of soft surfaces. Using the proposed AHO approach, functionally graded materials with common distributions can be efficiently optimised. By then, the proposed model is implemented on the MATLAB platform, and its execution is calculated using the current procedures. The proposed technique displays superior outcomes in all existing methods like wild horse optimiser, particle swarm optimisation and heap‐based optimiser. The proposed method shows a throughput of 57 mm3. The existing method shows the throughput of 32, 27 and 45 mm3. The results show that the proposed method has higher throughput compared with existing methods.

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Lithography-based additive manufacturing of porosity graded alumina

Cited by 7 publications

References 17 publications

3D‐printed alumina‐based ceramics with spatially resolved porosity

3D‐printed alumina‐based ceramics with spatially resolved porosity

Mid-infrared optical coherence tomography as a method for inspection and quality assurance in ceramics additive manufacturing

Additive Manufacturing of Composite Materials and Functionally Graded Structures Using Archerfish Hunting Technique

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