Realization of vat photopolymerisation of dense SiC ceramics with SiO2/MgSO4 coated sub-micron powders for efficient heat dissipation

Ho, Terence Yan King; Ng, Andrew Keong; Ye, Pengcheng; Tan, Hui Teng; Lock, D.; Du, Zehui; Gan, Chee Lip

doi:10.1016/j.addma.2023.103664

Additive Manufacturing

2023

DOI: 10.1016/j.addma.2023.103664

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Realization of vat photopolymerisation of dense SiC ceramics with SiO2/MgSO4 coated sub-micron powders for efficient heat dissipation

Terence Yan King Ho

Andrew Keong Ng

Pengcheng Ye

et al.

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Cited by 4 publications

References 42 publications

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Direct Vat‐Photopolymerization 3D Printing of Hierarchically Porous SiC Loaded with Co/Ni Based Catalysts by Using Pickering Emulsions

Ho,

Pung,

Lock

et al. 2024

Adv Funct Materials

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Hierarchically porous silicon carbide (SiC) is an important catalyst support widely used in various gas and liquid catalytic processes. Conventional approaches to fabricate such SiC have limited design flexibility and separated catalyst‐loading step is necessitated. Herein, a one‐step, direct vat‐photopolymerization 3D printing of hierarchically porous SiC loaded with Co/Ni based catalyst is demonstrated with Pickering emulsion as feedstock for the first time. Compared with normal ceramic slurries, Pickering emulsion dramatically increases the cure depth (by 50%) and emulsion stability, which allow continuous printing of complex SiC structures with uniform pore morphology. The resultant hierarchical porous SiC offered ≈40% better mechanical strength as compared with non‐hierarchical counterpart. By dissolving metal salts into aqueous phase in Pickering emulsions, complex architected structures with Co or Ni/Co in situ loaded in SiC matrix are printed. The metal salts are then thermally converted into oxides or silicates as catalysts anchored on SiC, exhibiting excellent catalytic activity and reusability. The emulsion templating strategy holds great facility to load various highly attractive materials such as high entropy oxides or functional fillers whilst reaping the benefits of vat photopolymerization for a myriad of applications in catalysis, batteries, and structural supports.

show abstract

Direct Vat‐Photopolymerization 3D Printing of Hierarchically Porous SiC Loaded with Co/Ni Based Catalysts by Using Pickering Emulsions

Ho,

Pung,

Lock

et al. 2024

Adv Funct Materials

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show abstract

Effect of preoxidation treatment for SiC preforms on the microstructures and properties of aluminum matrix composites prepared via a hybrid additive manufacturing

Liu,

Yan,

Shi

2025

Additive Manufacturing

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Surface modification of Si3N4 via silane coating and oxidation for photocurable slurry preparation

Shuangyu,

Mingbo,

Ping

et al. 2024

Ceramics International

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Realization of vat photopolymerisation of dense SiC ceramics with SiO2/MgSO4 coated sub-micron powders for efficient heat dissipation

Cited by 4 publications

References 42 publications

Direct Vat‐Photopolymerization 3D Printing of Hierarchically Porous SiC Loaded with Co/Ni Based Catalysts by Using Pickering Emulsions

Direct Vat‐Photopolymerization 3D Printing of Hierarchically Porous SiC Loaded with Co/Ni Based Catalysts by Using Pickering Emulsions

Effect of preoxidation treatment for SiC preforms on the microstructures and properties of aluminum matrix composites prepared via a hybrid additive manufacturing

Surface modification of Si3N4 via silane coating and oxidation for photocurable slurry preparation

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