Vat photopolymerization based Photoinhibition aided Ceramic additive manufacturing (PinCAM)

Journal of the European Ceramic Society, Год журнала: 2024, Номер 44(13), С. 7801 - 7824

Опубликована: Июнь 3, 2024

Vat photopolymerization (VPP) in ceramic additive manufacturing (CAM) faces challenges due to high viscosity from powder loading, necessitating interruptive recoating steps. Ceramic particles also attenuate and divert irradiated light, causing reduced cure depth over-curing, leading slow print, weak interlay adhesion, dimensional errors. This study introduces photo inhibition-aided CAM (PinCAM) using dual-wavelength digital light processing mitigate these issues. PinCAM employs two optical masks for initiation inhibition at different wavelengths. While previous research focused on polymers, this work evaluates inhibition's effects suspension-based VPP-CAM. Modeling experiments examine curing characteristics, print speed, accuracy, surface roughness, microstructure. Preliminary results suggest that photoinhibition has the potential enhance geometrical properties as well particle distribution homogeneity of green components without significantly compromising speed. Understanding impact will aid further optimization rapid precise manufacturing.

Язык: Английский

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A review on free miscible buoyant jets

Physics of Fluids, Год журнала: 2024, Номер 36(6)

Опубликована: Июнь 1, 2024

Buoyant jets have been a topic of interest due to their presence in various natural and industrial phenomena, as well our daily lives. Covering extensive literature, focus this review article is on free, miscible buoyant with small-density differences (under the Boussinesq approximation) within uniform stagnant environments. We examine latest research Newtonian jet flows expand scope viscoplastic counterparts, reflecting burgeoning trend contemporary literature. Our analysis covers negatively buoyant, pure, positively jets, via delving into dynamics. This includes regime classifications key characteristics, such laminar length, penetration mixing behavior, velocity profiles, turbulence parameters. In particular, effects governing dimensionless parameters, including Reynolds number, Froude Bingham viscosity ratio, injection angle, these characteristics are explored.

Язык: Английский

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A review on process prerequisites and biomedical applications of additively manufactured zirconia

Engineering Science and Technology an International Journal, Год журнала: 2024, Номер 59, С. 101876 - 101876

Опубликована: Окт. 23, 2024

Язык: Английский

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Water-based hydroxyapatite photocurable feedstock for the manufacture of architectured parts by vat photopolymerization

Additive manufacturing, Год журнала: 2025, Номер unknown, С. 104710 - 104710

Опубликована: Фев. 1, 2025

Язык: Английский

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An additively manufactured Al2O3 whisker/3Y-TZP ceramic with high mechanical and low-temperature aging properties fabricated by stereolithography technology for dental applications

Journal of Alloys and Compounds, Год журнала: 2025, Номер 1026, С. 180488 - 180488

Опубликована: Апрель 17, 2025

Язык: Английский

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3D-Printable Bioactive Glass-Based Polymer-Infiltrated Ceramic for Biomimetic Tooth Root Applications

Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials, Год журнала: 2025, Номер 169, С. 107060 - 107060

Опубликована: Май 17, 2025

Titanium implants are widely utilized for tooth root reconstruction due to their excellent mechanical and biological properties. However, properties differ from those of dentin. This study aims develop a 3D-printable polymer-infiltrated ceramic network (PICN) as restoration material that mimics the natural shape, properties, biocompatibility. A bioactive glass (BG)-based photocurable slurry was prepared vat photopolymerization, printed, sintered, subsequently form PICN (3D-PICN). For comparison, BG (3D-BG), dense without resin infiltration, fabricated using same printing sintering process. The characterized its rheological photopolymerization behaviors, including viscosity, cure depth, degree conversion, overgrowth, accuracy. results confirmed suitability enabling precise fabrication root-shaped structures. Mechanical work fracture, flexural strength, modulus, Vickers hardness, were evaluated both 3D-PICN 3D-BG. revealed closely match dentin, whereas 3D-BG exhibits similar enamel. Biocompatibility assessed through in vitro simulated body fluid immersion tests vivo implantation ten-week-old rat tibia model, followed by histological analysis. findings good biocompatibility with bone tissue. demonstrated printability, compatibility favorable biocompatibility, suggesting potential promising applications.

Язык: Английский

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Microstructure and properties of transparent alumina ceramics fabricated by vat photopolymerization in combination with vacuum sintering

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 181129 - 181129

Опубликована: Май 1, 2025

Язык: Английский

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Improved 3D printed silica ceramics impregnated with an alumina sol by controlling atmosphere, vacuum pressure and holding time

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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