3D SiC containing uniformly dispersed, aligned SiC whiskers: Printability, microstructure and mechanical properties

Xiong, Huiwen; Zhao, Lianzhong; Chen, Hehao; Zhou, Kechao; Zhang, Ye

doi:10.1016/j.jallcom.2019.151824

Cited by 40 publications

(22 citation statements)

References 38 publications

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“…On one hand, the increase of whisker content will lead to the slurry viscosity increase, while the bubbles in the high viscosity slurry cannot be quickly discharged during extrusion and curing, which will lead to the overall porosity (

{\pi _a}

) increase (as shown in Table 1) and decrease the mechanical properties of the 4SiC w /GP composite. On the other hand, when the whiskers content in the composite reaches about 4 wt.%, the whisker agglomeration will be intensified, 29,44 and the internal defects caused by whisker agglomeration will also lead to the decline of its mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

Preparation and mechanical performance of SiC_w/geopolymer composites through direct ink writing

Zhao

Zheng³

et al. 2022

J Am Ceram Soc

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Traditional geopolymer structures benefit from the durability, irradiation resistance, and environmental friendliness, but their brittleness limits their applications where repeated, impactive strains are imparted. This situation may be alleviated if complex structures with tunable geometry can be fabricated, for example, through 3D printing based on direct ink writing (DIW). In this research, SiC whisker/geopolymer (SiC w /GP) composites were fabricated by the DIW for the first time. The rheological behaviors of the SiC w /GP inks and the fracture behaviors of the printed samples were explored. The modified printing inks exhibited non-Newtonian fluid behavior (shear-thinning). Subsequently, a series of lightweight architected structures were fabricated, and they revealed how reinforcement and architecture of the printed structures could influence both the strength and toughness of the SiC w /GP composites.

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{\pi _a}

Section: Resultsmentioning

confidence: 99%

Preparation and mechanical performance of SiC_w/geopolymer composites through direct ink writing

Zhao

Zheng³

et al. 2022

J Am Ceram Soc

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“…Till now, many researchers have tried to add whiskers, nanowires, chopped fibers, or other second phase reinforcement to achieve the strengthening and toughening. Xiong et al [90] reported to mix PCS precursor with n-hexane and SiC whiskers to prepare an ink. Then, SiC w /PCS green body was prepared by DIW and following drying, oxidative cross-linking and solidification.…”

Section: Direct Ink Writing (Diw)mentioning

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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“…Initial studies of printing reinforced polymer‐derived ceramics have shown promising results. Researchers have dispersed SiC whiskers in a carbosilane preceramic polymer and solvent solution that was then printed with the DIW method 15,16 . They showed the ability to control alignment of the whiskers and to achieve >30 MPa strength from a 62% porous lattice printed with a ~0.2 mm diameter nozzle.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have dispersed SiC whiskers in a carbosilane preceramic polymer and solvent solution that was then printed with the DIW method. 15,16 They showed the ability to control alignment of the whiskers and to achieve >30 MPa strength from a 62% porous lattice printed with a ~0.2 mm diameter nozzle. Brinckmann et al 17 printed a photocurable siloxane-based preceramic resin with 1.45% by volume SiC whiskers on DLP printers.…”

Section: Introductionmentioning

confidence: 99%

Additive manufacturing of polymer‐derived ceramic matrix composites

et al. 2020

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This study presents a fabrication method and identifies processing bounds for additively manufacturing (AM) ceramic matrix composites (CMCs), comprising a silicon oxycarbide (SiOC) ceramic matrix. A digital light projection printer was used to photopolymerize a siloxane-based preceramic resin containing inert ceramic reinforcement. A subsequent pyrolysis converted the preceramic polymer to SiOC. Particle reinforcements of 0 to 40% by volume in the green state were uniformly dispersed in the printed samples to study their effects on pyrolysis mass loss and shrinkage, and CMC notch sensitivity and strength. Both particle and whisker reinforcements toughened the glassy SiOC matrix (1 MPa m 1/2), reaching values >3 MPa m 1/2. Bending strengths of >300 MPa (>150 MPa (g cm −3) −1) and a Weibull modulus of 10 were measured on AM samples without surface finish. We identified two pore formation mechanisms that placed processing bounds on sample size and reinforcement volume fraction. Methods for increasing these bounds are discussed. With properties commensurate to traditionally processed technical ceramics, the presented process allows for free-form fabrication of high-performance AM CMC components.

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3D SiC containing uniformly dispersed, aligned SiC whiskers: Printability, microstructure and mechanical properties

Cited by 40 publications

References 38 publications

Preparation and mechanical performance of SiC_w/geopolymer composites through direct ink writing

Preparation and mechanical performance of SiC_w/geopolymer composites through direct ink writing

Progress and challenges towards additive manufacturing of SiC ceramic

Additive manufacturing of polymer‐derived ceramic matrix composites

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3D SiC containing uniformly dispersed, aligned SiC whiskers: Printability, microstructure and mechanical properties

Cited by 40 publications

References 38 publications

Preparation and mechanical performance of SiCw/geopolymer composites through direct ink writing

Preparation and mechanical performance of SiCw/geopolymer composites through direct ink writing

Progress and challenges towards additive manufacturing of SiC ceramic

Additive manufacturing of polymer‐derived ceramic matrix composites

Contact Info

Product

Resources

About

Preparation and mechanical performance of SiC_w/geopolymer composites through direct ink writing

Preparation and mechanical performance of SiC_w/geopolymer composites through direct ink writing