Robocasting of reaction bonded silicon carbide structures

Wahl, Larissa; Lorenz, Mylena; Biggemann, Jonas; Travitzky, Nahum

doi:10.1016/j.jeurceramsoc.2019.06.049

Cited by 46 publications

(22 citation statements)

References 28 publications

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“…Several components have been successfully manufactured by combining 3D printing with liquid silicon infiltration, which involves the infiltration of a carbon (C) porous preform with molten silicon (Si) at a temperature exceeding its melting point (1414 • C). 21,22 Several types of preforms can be manufactured via different AM approaches: binder jetting, 22 direct or indirect selective laser sintering, 24,25 laminated object manufacturing, 26 robocasting, 14 extrusion free forming, 22 direct ink writing, and stereolithography. 27 The drawbacks of these approaches are the low relative density, low mechanical strength, and coarse resolution of the parts with respect to the traditional approaches.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of dense SiSiC ceramics by a hybrid additive manufacturing process

et al. 2021

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In this work, we report the fabrication of Silicon infiltrated Silicon Carbide (SiSiC) components by a hybrid additive manufacturing process. Selective laser sintering of polyamide powders was used to 3D print a polymeric preform with controlled relative density, which allows manufacturing geometrically complex parts with small features. Preceramic polymer infiltration with a silicon carbide precursor followed by pyrolysis (PIP) was used to convert the preform into an amorphous SiC ceramic, and five PIP cycles were performed to increase the relative density of the part. The final densification was achieved via liquid silicon infiltration (LSI) at 1500 • C, obtaining a SiSiC ceramic component without change of size and shape distortion. The crystallization of the previously generated SiC phase, with associated volume change, allowed to fully infiltrate the part leading to an almost fully dense material consisting of β-SiC and Si in the volume fraction of 45% and 55% respectively. The advantage of this approach is the possibility of manufacturing SiSiC ceramics directly from the preceramic precursor, without the need of adding ceramic powder to the infiltrating solution. This can be seen as an alternative AM approach to Binder jetting and direct ink writing for the production of templates to be further processed by silicon infiltration.

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Section: Introductionmentioning

confidence: 99%

Fabrication of dense SiSiC ceramics by a hybrid additive manufacturing process

et al. 2021

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“…They discussed the influences of SiC paste preparation, zeta potential, pH value, viscosity, rheological properties, robocasting processing parameters, and SPS temperature on the microstructure and macrostructure of the final complex-shaped SiC ceramic in detail. Wahl et al [68] also developed a SiC ceramic paste containing C, then used robocasting to prepare a SiC/C ceramic green body, and finally achieved a SiC ceramic by using reaction sintering and LSI, as shown in Fig. 19(b).…”

Section: Robocastingmentioning

confidence: 99%

Progress and challenges towards additive manufacturing of SiC ceramic

et al. 2021

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Silicon carbide (SiC) ceramic and related materials are widely used in various military and engineering fields. The emergence of additive manufacturing (AM) technologies provides a new approach for the fabrication of SiC ceramic products. This article systematically reviews the additive manufacturing technologies of SiC ceramic developed in recent years, including Indirect Additive Manufacturing (Indirect AM) and Direct Additive Manufacturing (Direct AM) technologies. This review also summarizes the key scientific and technological challenges for the additive manufacturing of SiC ceramic, and also forecasts its possible future opportunities. This paper aims to provide a helpful guidance for the additive manufacturing of SiC ceramic and other structural ceramics.

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“…Some interesting features could be achieved using this type of materials such as controlled swelling, predicted shape alterations, functionalities change and self-assembly. 94 Self-shaping geometries, like as bending, twisting or combinations of these two basic movements, can be implemented by programming the material's microstructure to undergo local anisotropic shrinkage during heat treatment, as presented in Figure 8. This functional design may be achieved by magnetically aligning functionalized ceramic platelets in a liquid ceramic suspension, subsequently consolidated through an established enzyme-catalysed reaction, and finally achieved deliberate control over shape change during the sintering step.…”

Section: Future Perspectivesmentioning

confidence: 99%

State of the art in the use of bioceramics to elaborate 3D structures using robocasting

Daguano

Santos

Alves

et al. 2019

IJAMB

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Robocasting, também conhecido como Direct Ink Writing, é uma técnica de fabricação aditiva (AM), que inclui extração direta de sistemas coloidais, que consiste na exposição de camadas e um controlador controlado por computador de uma mídia altamente concentrada nesta extrusão. Este artigo apresenta uma visão geral das contribuições e desafios no desenvolvimento de biomateriais cerâmicos tridimensionais (3D) por esse método de impressão. O estado da arte em diferentes biocerâmicas como alumina, zircônia, fosfato de vidro, vidro / vitrocerâmica e compostos é avaliado e discutido em relação a suas aplicações e comportamento biológico, em uma pesquisa que produziu desde uma produção de próteses dentárias personalizadas a biofabricantes 3D humanos tecidos.Embora o robocasting represente uma interrupção na fabricação de estruturas porosas, como os andaimes para a Engenharia de Tecidos (TE), muitas vantagens ainda são necessárias, mas ainda são divulgadas, essa técnica já está usando a utilização de peças densas. Assim, são necessárias estratégias para a fabricação de biocerâmica densificada, com o objetivo de ampliar as possibilidades dessa técnica de AM. As vantagens e desvantagens e também perspectivas futuras da aplicação do robocasting no processamento biocerâmico também são exploradas.

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Robocasting of reaction bonded silicon carbide structures

Cited by 46 publications

References 28 publications

Fabrication of dense SiSiC ceramics by a hybrid additive manufacturing process

Fabrication of dense SiSiC ceramics by a hybrid additive manufacturing process

Progress and challenges towards additive manufacturing of SiC ceramic

State of the art in the use of bioceramics to elaborate 3D structures using robocasting

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