Stereolithography of SiOC Ceramic Microcomponents

Zanchetta, Erika; Cattaldo, Marco; Franchin, Giorgia; Schwentenwein, Martin; Homa, Johannes; Brusatin, Giovanna; Colombo, Paolo

doi:10.1002/adma.201503470

Cited by 356 publications

(193 citation statements)

References 48 publications

(22 reference statements)

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“…The suspensions used in this paper have relatively low solid loadings, so the foamed suspensions contain large amount of water. 6,43 The novel secondary open pore structure that looks like a "sieve" with average sieve pore around 0.8 lm has potential to be applied in filtration fields where the separation of micron level particles is required. The glass foams sintered at higher temperature exhibit larger sintering shrinkage, which is analogous to alumina ceramic foams reported in our previous research.…”

Section: Resultsmentioning

confidence: 99%

A novel fabrication method for glass foams with small pore size and controllable pore structure

Huo

Yan

et al. 2017

J Am Ceram Soc

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In this paper, a novel fabrication method for glass foams has been introduced based on colloidal suspension foaming method using waste glass as starting materials. It is demonstrated for the first time that foam stabilization via in‐situ hydrophobization of waste glass particles is possible. The fabrication conditions for stable glass particle‐stabilized foams are optimized by investigating the influences of pH value, concentration of propyl gallate and ball milling time, respectively. It is demonstrated that this is a versatile method for fabrication of stable foamed glass suspension and final glass foams with small pore size of dozens of microns, which is much smaller than that of most glass foams in previous literatures. This novel method enables both closed pore structure and open pore structure simply by tailoring solid loading of glass suspension. A “sieve‐like” hierarchical pore structure can be achieved by adjusting sintering temperature. The glass foams with controllable structure could be applied in thermal insulation fields for closed pores, and in catalyst loading, filtration, and separation fields for open pores and hierarchical pore structure.

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Section: Resultsmentioning

confidence: 99%

A novel fabrication method for glass foams with small pore size and controllable pore structure

Huo

Yan

et al. 2017

J Am Ceram Soc

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“…Direct ink writing was employed to produce SiOC and graphene‐SiOC ceramic micro‐components from a commercial silicon resin . Stereolithography was used to process different SiCN and SiOC microstructures, micro lattices, and honeycombs . A comprehensive review on additive manufacturing of ceramic components with preceramic polymers has also been recently published .…”

Section: Introductionmentioning

confidence: 99%

Polymer‐derived SiCN cellular structures from replica of 3D printed lattices

et al. 2018

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In comparison with metals and polymers, ceramics and/or carbon are more difficult to process into well‐defined cellular architectures (e.g., cubic, tetrakaidecadehron, etc.) using Additive Manufacturing techniques. The present work reports a simple method for generating complex and precise SiCN ceramic lattices using a preceramic polymer and applying the replica approach to structures fabricated using stereolithography of plastic materials, with the associated ease of fabrication. Three‐dimensional printed plastic lattices impregnated with a polysilazane were converted to SiCN by pyrolysis at 1000°C in inert atmosphere. In spite of the high amount of mass loss (~58%) and volume shrinkage (~65%), the impregnated structures did not collapse during pyrolysis, leading to highly porous (total porosity ~93 vol%) components possessing suitable strength for handling and potential use as lightweight components.

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“…A very convenient precursor route to produce nonoxide ceramics is the polymer‐derived‐ceramic (PDC) route . This method is based on the design of a suitable and high‐purity synthetic precursor that provides a uniform chemical composition at the molecular scale.…”

Section: Introductionmentioning

confidence: 99%

Molecular Chemistry and Engineering of Boron‐Modified Polyorganosilazanes as New Processable and Functional SiBCN Precursors

Viard

Fonblanc

Schmidt

et al. 2017

Chemistry A European J

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A series of boron-modified polyorganosilazanes was synthesized from a poly(vinylmethyl-co-methyl)silazane and controlled amounts of borane dimethyl sulfide. The role of the chemistry behind their synthesis has been studied in detail by using solid-state NMR spectroscopy, FTIR spectroscopy, and elemental analysis. The intimate relationship between the chemistry and the processability of these polymers is discussed. Polymers with low boron contents displayed appropriate requirements for facile processing in solution, such as impregnation of host carbon materials, which resulted in the design of mesoporous monoliths with a high specific surface area after pyrolysis. Polymers with high boron content are more appropriate for solid-state processing to design mechanically robust monolith-type macroporous and dense structures after pyrolysis. Boron acts as a crosslinking element, which offers the possibility to extend the processability of polyorganosilazanes and suppress the distillation of oligomeric fragments in the low-temperature region of their thermal decomposition (i.e., pyrolysis) at 1000 °C under nitrogen. Polymers with controlled and high ceramic yields were generated. We provide a comprehensive mechanistic study of the two-step thermal decomposition based on a combination of thermogravimetric experiments coupled with elemental analysis, solid-state NMR spectroscopy, and FTIR spectroscopy. Selected characterization tools allowed the investigation of specific properties of the monolith-type SiBCN materials.

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Stereolithography of SiOC Ceramic Microcomponents

Cited by 356 publications

References 48 publications

A novel fabrication method for glass foams with small pore size and controllable pore structure

A novel fabrication method for glass foams with small pore size and controllable pore structure

Polymer‐derived SiCN cellular structures from replica of 3D printed lattices

Molecular Chemistry and Engineering of Boron‐Modified Polyorganosilazanes as New Processable and Functional SiBCN Precursors

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