Ceramic 3d Printing: Comparison of Sla and DLP Technologies

Truxová, Veronika; Šafka, Jiří; Seidl, Martin; Kovalenko, Iaroslav; Volensky, Lukas; Ackermann, Michal

doi:10.17973/mmsj.2020_06_2020006

Cited by 31 publications

(23 citation statements)

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“…12. However, ceramic vat photopolymerization cannot produce monolithic large parts due to the high amount of organic material associated with the process and that would lead to cracks in the debinding of thick sections [6,171]. Suppliers specify 10 mm as the maximum wall thickness to be produced [171,172].…”

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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Section: Vat Photopolymerizationmentioning

confidence: 99%

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

2022

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“…There are several methods that are currently used, and the most known are the fused deposition modeling (FDM), selective laser sintering (SLS), stereolithography (SLA), etc. [ 28 , 29 , 30 , 31 , 32 , 33 ]. Binder jet 3D printing, also known as “powder bed and inkjet” and “drop-on-powder” printing is one of the most used method that can be used for realizing of ceramic parts, but also ceramic molds that can be further on used for casting processes of metallic parts (e.g., gravitational casting, investment casting, etc.).…”

Section: Introductionmentioning

confidence: 99%

Cast Iron Parts Obtained in Ceramic Molds Produced by Binder Jetting 3D Printing—Morphological and Mechanical Characterization

et al. 2021

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Mechanical behavior and characteristics of two different types of materials: cast iron with lamellar graphite EN-GJL-250 and cast iron with spheroidal graphite EN-GJS-400-15 which were cast in ceramic molds using gravitational casting method has considered in this research. The ceramic molds were obtained by 3D printing method. First, a finite element analysis was developed to determine Tresca and von Mises stresses and the deformations of the ceramic molds under an applied pressure of 25 MPa. Samples were produced by gravitational casting using two types of cast iron materials. Mechanical tests were made using samples produced from these two types of materials and microstructure analysis evaluation of fractured zones was realized by scanning electron microscopy. Obtained results were finally used for designing, developing, and producing of one ‘hydraulic block’ of a railway installation by the Benninger Guss company of Switzerland.

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“…This technology is best suited for small ceramic components for high-precision applications [11]. It is not recommended for large dense parts due to the high amount of organic material associated with the process and that would lead to cracks in the debinding of thick sections [11,79], as discussed in detail in section 2.7.…”

Section: Ceramics By Vat Photopolymerizationmentioning

confidence: 99%

Section: Post-processingmentioning

confidence: 99%

“…Ceramic vat photopolymerization is not indicated to produce large dense parts due to the high amount of organic material associated with the process and that would lead to cracks in the debinding of thick sections [11,79]. Suppliers specify 10 mm as the maximum wall thickness to be produced [45,79,222]. In fact, debinding is a very challenging process for ceramic parts manufactured by vat photopolymerization since, in general, the slurries have more than 50 vol% of organic material [44].…”

Section: Post-processingmentioning

confidence: 99%

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Additive manufacturing of advanced ceramics by digital light processing: equipment, slurry, and 3D printing

Camargo¹

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Additive manufacturing (AM) or 3D printing is a set of technologies that fabricate parts by successively adding layers. This technique is already applied in all classes of materials. In ceramic manufacturing, AM allows the fabrication of small series components with greater geometric freedom, lower cost, and reduced delivery time. Among the AM technologies, vat photopolymerization (VP) stands out for its ability to produce ceramic pieces with excellent dimensional accuracy and surface finish. However, there is a shortage of VP commercial equipment dedicated to producing ceramics at an affordable price, given the challenges of dealing with raw material with high particle loading. In this work, which approaches the fabrication of advanced ceramics by digital light processing VP, the feasibility of using a topdown 3D printer prototype and an ordinary commercial bottom-up printer (usually applied in polymer 3D printing) in the processing of ceramic materials was tested. For this, a 3D printer prototype was designed and built, creating an innovative recoating system (patent pending), composed of two blades with distinct and sequential functions. This system aims to overcome the challenge of creating layers for ceramic suspensions, which usually have high viscosity. In addition, photosensitive suspensions were developed seeking to meet process requirements related to high ceramic loading, rheological behavior, photosensitive parameters, and stability.The ceramic powders were selected to evaluate the process using distinct groups of advanced ceramics: nanometric powders (3Y-TZP) and submicrometric powders (electrofused mullite).Furthermore, a combination of natural raw material (zircon) with alumina was used to investigate the in-situ formation of mullite-zirconia composites in 3D printed parts. Thus, photosensitive ceramic suspensions based on a nanometric zirconia powder (3Y-TZP) were developed and characterized, selecting the appropriate components (monomer, photoinitiator, and dispersant). In this way, a ceramic slurry was obtained capable of validating the developed prototype and manufacturing green ceramic bodies. Nonetheless, the same formulation was not suitable for the commercial 3D printer, due to its rheological behavior not being compatible with the equipment. On the other hand, the submicrometric mullite powder allowed the preparation of formulations with high solid loading (up to 50 vol%). These new formulations were successfully used in both pieces of equipment tested. Furthermore, the formulation based on the mixture of ceramic powders (zircon and alumina) showed that the technique can be combined with reactive sintering to create in-situ mullite and zirconia composites. After analysis of the thermal decomposition, a protocol for the thermal treatment was created and the printed bodies were submitted to burning of the organic components and sintering. Both 3D printers tested proved capable of creating dense ceramic pieces (>95%) and with geometries that would be unfeasible or even impossible by other man...

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Ceramic 3d Printing: Comparison of Sla and DLP Technologies

Cited by 31 publications

References 0 publications

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

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

Cast Iron Parts Obtained in Ceramic Molds Produced by Binder Jetting 3D Printing—Morphological and Mechanical Characterization

Additive manufacturing of advanced ceramics by digital light processing: equipment, slurry, and 3D printing

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