Fabrication of dense aluminum nitride ceramics via digital light processing-based stereolithography

Lin, Lu; Wu, Haidong; Xu, Yuerui; Lin, Kunji; Zou, Wenjing; Wu, Shanghua

doi:10.1016/j.matchemphys.2020.122969

Cited by 28 publications

(7 citation statements)

References 28 publications

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“…6 Cai et al investigated the effect of slurry mixing approaches and silica glass solid loading on DLP-manufactured parts and concluded that transparent glass samples can be obtained after heat treatment of DLP samples. 7 Meanwhile, other solids have been extensively investigated, including Si 3 N 4 ceramic powders, 8 aluminum nitride (AlN) powders, 9 and calcium phosphate (CaP) particles. 10 While many formulations with high solid loading have been reported for DLP and other forms of vat photopolymerization, fewer studies have focused on the role of interfacial interactions between the continuous polymeric phase and solid reinforcement phase in high solids loading composites.…”

Section: Introductionmentioning

confidence: 99%

“…Cai et al investigated the effect of slurry mixing approaches and silica glass solid loading on DLP-manufactured parts and concluded that transparent glass samples can be obtained after heat treatment of DLP samples . Meanwhile, other solids have been extensively investigated, including Si 3 N 4 ceramic powders, aluminum nitride (AlN) powders, and calcium phosphate (CaP) particles …”

Section: Introductionmentioning

confidence: 99%

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Digital Light Processing of Highly Filled Polymer Composites with Interface-Mediated Mechanical Properties

Wang

Delarue

McAninch

et al. 2022

ACS Appl. Polym. Mater.

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Digital light processing (DLP) is a popular method of additive manufacturing of thermosetting polymer composites with high resolution. While DLP of composite systems has been demonstrated, only a few studies comment on the role of interfacial interactions on resulting mechanical properties. In this work, high volume fraction (50 vol %) glass microsphere-reinforced composites were fabricated via DLP. The effects of surface chemistry and interfacial interactions on the mechanical and thermal properties of additively manufactured composites were investigated. Interfacial interactions between the urethane acrylate-based resin system and glass microspheres were found to dictate the overall performance of the composites. Greater resin−glass wettability led to simultaneous and anomalous increases in stiffness, toughness, and strength. Interestingly, composites where glass was functionalized to covalently bond with the resin phase only showed moderate improvements in mechanical properties as compared to systems with high resin−glass wettability. Finally, complex structures with fine details were printed to demonstrate printability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Digital Light Processing of Highly Filled Polymer Composites with Interface-Mediated Mechanical Properties

Wang

Delarue

McAninch

et al. 2022

ACS Appl. Polym. Mater.

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“…BaTiO 3 [267][268][269][270][271][272], PZT [273,274], alkaline niobate [275] Dental restoration (crown, bridge, etc.) ZrO 2 [276][277][278][279][280][281][282][283][284][285][286][287] [296] Heat exchanger/dissipation Al 2 O 3 [170], AlN [297][298][299] Tool with optimized design (inner cooling structure) Al 2 O 3 [180], cemented carbide [300] Optical application (lens, armored/ sensor window, etc.) Al 2 O 3 [301], MgAl 2 O 4 spinel [302], SiC [303], Nd-doped YAG [304], Yb-doped YAG [305] Antenna Al 2 O 3 +glass [306], Ba 1-x Sr x Zn 2 Si 2 O 7 [307], MgTiO 3 +CaTiO 3 [308] Nuclear fusion Li 2 TiO 3 [309], Li 2 SiO 3 [310] Table VIII waste.…”

Section: Vat Photopolymerizationmentioning

confidence: 99%

A review on the ceramic additive manufacturing technologies and availability of equipment and materials

2022

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Ceramic additive manufacturing allows the fabrication of small series of complex parts without the high costs of molds usually associated with traditional ceramic processing. Although research into ceramic 3D printing by all technologies started back in the 90s, its industrial application is still quite restricted when compared to polymers and metals, which is related to the limited availability and costs of equipment and materials for such applications. This review examined the advantages and limitations of each process (binder jetting, direct ink writing, directed energy deposition, fused deposition, material jetting, selective laser sintering, selective laser melting, and vat photopolymerization), discussing their particularities. It also summarized the commercially available 3D printers and raw materials for ceramic processing, pointing out to trends and challenges of each technology.

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“…The suspension was ball-milled for 2 h employing a planetary ball mill to facilitate physical adsorption of OA on powder surface. Then the suspension was dried at 50 ℃ for 12 h to remove ethanol and the remaining powder was thermally treated at 80 ℃ for 6 h to promote chemical adsorption [27,51]. Finally, the treated ceramic powder was de-agglomerated by passing them through a 150 μm sieve.…”

Section: Preparation Of Uv-curable Ceramic Suspensionmentioning

confidence: 99%

Microstructure refinement-homogenization and flexural strength improvement of Al2O3 ceramics fabricated by DLP-stereolithography integrated with chemical precipitation coating process

Nie

Sheng

et al. 2021

J Adv Ceram

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In this study, the chemical precipitation coating (CP) process was creatively integrated with DLP-stereolithography based 3D printing for refining and homogenizing the microstructure of 3D printed Al2O3 ceramic. Based on this novel approach, Al2O3 powder was coated with a homogeneous layer of amorphous Y2O3, with the coated Al2O3 powder found to make the microstructure of 3D printed Al2O3 ceramic more uniform and refined, as compared with the conventional mechanical mixing (MM) of Al2O3 and Y2O3 powders. The grain size of Al2O3 in Sample CP is 64.44% and 51.43% lower than those in the monolithic Al2O3 ceramic and Sample MM, respectively. Sample CP has the highest flexural strength of 455.37±32.17 MPa, which is 14.85% and 25.45% higher than those of Samples MM and AL, respectively; also Sample CP has the highest Weibull modulus of 16.88 among the three kinds of samples. Moreover, the fine grained Sample CP has a close thermal conductivity to the coarse grained Sample MM because of the changes in morphology of Y3Al5O12 phase from semi-connected (Sample MM) to isolated (Sample CP). Finally, specially designed fin-type Al2O3 ceramic heat sinks were successfully fabricated via the novel integrated process, which has been proven to be an effective method for fabricating complex-shaped Al2O3 ceramic components with enhanced flexural strength and reliability.

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Fabrication of dense aluminum nitride ceramics via digital light processing-based stereolithography

Cited by 28 publications

References 28 publications

Digital Light Processing of Highly Filled Polymer Composites with Interface-Mediated Mechanical Properties

Digital Light Processing of Highly Filled Polymer Composites with Interface-Mediated Mechanical Properties

A review on the ceramic additive manufacturing technologies and availability of equipment and materials

Microstructure refinement-homogenization and flexural strength improvement of Al2O3 ceramics fabricated by DLP-stereolithography integrated with chemical precipitation coating process

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