Fabrication of Ceramic Component Using Constrained Surface Microstereolithography

Adake, Chandrashekhar V.; Gandhi, Prasanna S.; Bhargava, Parag

doi:10.1016/j.mspro.2014.07.277

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Applications are varied and include biomedical implants (13,14), ceramic prototypes (15), cellular ceramics (16), complex investment casting cores (8,17,18), and integrally cored investment casting molds (19). The process has been adapted for microscale ceramic forming as microstereolithography (20)(21)(22) for a variety of applications (23)(24)(25).…”

Section: Introductionmentioning

confidence: 99%

Ceramic Stereolithography: Additive Manufacturing for Ceramics by Photopolymerization

Halloran

2016

Annu. Rev. Mater. Res.

419

198

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Ceramic stereolithography and related additive manufacturing methods involving photopolymerization of ceramic powder suspensions are reviewed in terms of the capabilities of current devices. The practical fundamentals of the cure depth, cure width, and cure profile are related to the optical properties of the monomer, ceramic, and photo-active components. Postpolymerization steps, including harvesting and cleaning the objects, binder burnout, and sintering, are discussed and compared with conventional methods. The prospects for practical manufacturing are discussed.

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Section: Introductionmentioning

confidence: 99%

Ceramic Stereolithography: Additive Manufacturing for Ceramics by Photopolymerization

Halloran

2016

Annu. Rev. Mater. Res.

419

198

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“…In 1999, Zhang [36] was the first who showed the fabrication of a ceramic part from HDDA by µ-stereolithography process (µ-SLA) of dense alumina parts with a line width of 1.2 µm. The solid content varied between 40 and 60 wt.% [43][44][45][46][47]. Further used polymers are Acura SI-10 [48] and polyethyleneglycoldiacrylate (PEG-DA) [49].…”

Section: Manufacturing Of Ceramic Parts Using Heterogeneous Slurries and Conventional Technologiesmentioning

confidence: 99%

Process Development for Additive Manufacturing of Alumina Toughened Zirconia for 3D Structures by Means of Two-Photon Absorption Technique

et al. 2021

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Additive manufacturing is well established for plastics and metals, and it gets more and more implemented in a variety of industrial processes. Beside these well-established material platforms, additive manufacturing processes are highly interesting for ceramics, especially regarding resource conservation and for the production of complex three-dimensional shapes and structures with specific feature sizes in the µm and mm range with high accuracy. The usage of ceramics in 3D printing is, however, just at the beginning of a technical implementation in a continuously and fast rising field of research and development. The flexible fabrication of highly complex and precise 3D structures by means of light-induced photopolymerization that are difficult to realize using traditional ceramic fabrication methods such as casting and machining is of high importance. Generally, slurry-based ceramic 3D printing technologies involve liquid or semi-liquid polymeric systems dispersed with ceramic particles as feedstock (inks or pastes), depending on the solid loading and viscosity of the system. This paper includes all types of photo-curable polymer-ceramic-mixtures (feedstock), while demonstrating our own work on 3D printed alumina toughened zirconia based ceramic slurries with light induced polymerization on the basis of two-photon absorption (TPA) for the first time. As a proven exemplary on cuboids with varying edge length and double pyramids in the µm-range we state that real 3D micro-stereolithographic fabrication of ceramic products will be generally possible in the near future by means of TPA. This technology enables the fabrication of 3D structures with high accuracy in comparison to ceramic technologies that apply single-photon excitation. In sum, our work is intended to contribute to the fundamental development of this technology for the representation of oxide-ceramic components (proof-of-principle) and helps to exploit the high potential of additive processes in the field of bio-ceramics in the medium to long-term future.

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Macroscopic shock plasticity of brittle material through designed void patterns

Jiang

Yu²,

He³

et al. 2016

Journal of Applied Physics

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The rapid propagation and coalescence of cracks and catastrophic fractures, which occur often under shock compression, compromise a brittle material's design function and restrict its scope of practical application. The shock plasticity of brittle materials can be improved significantly by introducing and designing its microstructure, which can help reduce or delay failure. We used a lattice-spring model, which can describe elastic deformation and brittle fracture of modeled material accurately, to study the influence of void distributions (random, square, hexagonal, and triangular void patterns) on the macroscopic shock response and the mesoscopic deformation feature of brittle materials. Calculated results indicate that the void patterns dominate two inelastic deformation stages on the Hugoniot stress-strain curves (the collapse deformation stage and the slippage deformation stage). It shows that the strain localization is not strong and that the broken media are closer to a round bulk when the samples exist in random and triangular void patterns. This favors an increase in deformation during the slippage deformation stage. For the samples with square and hexagonal void patterns, the strain localization is strong and the broken media are closer to columnar bulks, which favors an increase in deformation during the collapse deformation stage.

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Fabrication of Ceramic Component Using Constrained Surface Microstereolithography

Cited by 3 publications

References 12 publications

Ceramic Stereolithography: Additive Manufacturing for Ceramics by Photopolymerization

Ceramic Stereolithography: Additive Manufacturing for Ceramics by Photopolymerization

Process Development for Additive Manufacturing of Alumina Toughened Zirconia for 3D Structures by Means of Two-Photon Absorption Technique

Macroscopic shock plasticity of brittle material through designed void patterns

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