Enhanced comprehensive properties of stereolithography 3D printed alumina ceramic cores with high porosities by a powder gradation design

Li, Xiang; Su, Haijun; Dong, Dong; Zhao, Di; Liu, Yuan; Shen, Zhonglin; Jiang, Hao; Guo, Yinuo; Liu, Haifang; Fan, Guangrao; Yang, Wenchao; Huang, Taiwen; Zhang, Jun; Liu, Lin; Fu, Hengzhi

doi:10.1016/j.jmst.2022.04.040

Cited by 46 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For sintered ZTA composites printed using model 3 that contained most printing layers and interlayer gaps, printing layer was parallel to applied force, wherein interlayer gaps provided the path for cracks initiation and propagation. Thus, the sintered ZTA composites printed using model 3 exhibited the lowest flexural strength 32 . In contrast, applied force was perpendicular to printing layer for sintered ZTA composites printed using model 1 or 2, in which crack propagation could be hampered and obtained the higher flexural strength 33 .…”

Section: Resultsmentioning

confidence: 95%

“…Thus, the sintered ZTA composites printed using model 3 exhibited the lowest flexural strength. 32 In contrast, applied force was perpendicular to printing layer for sintered ZTA composites printed using model 1 or 2, in which crack propagation could be hampered and obtained the higher flexural strength. 33 Meanwhile, as for sintered ZTA composites printed using model 1, top surface under applied force was smooth.…”

Section: Evaluation Of Anisotropy On Mechanical Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Zhou,

Zhang,

Zhang

2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Zirconia‐toughened alumina (ZTA) composite ceramics show great potential for use in dental repair applications due to their unique properties. Complex‐shaped ZTA all‐porcelain crowns can be accurately fabricated using digital light processing (DLP) technology. However, effectively controlling both the anisotropy on mechanical property and surface quality of ZTA composites shaped by DLP remains a critical challenge that requires further research and innovation. In this work, we propose an efficient method to synchronously enhance the isotropy on mechanical performance and surface quality of DLP formed ZTA all‐porcelain crowns by controlling contents of yttria‐stabilized zirconia (YSZ) powders. When enhancing contents of YSZ from 5 to 20 wt%, multilayer microstructure with obvious interlayer gaps transformed into uniform microstructure with strong interlayer bonding, and the smaller alumina grain was observed on the stair‐stepping microstructure. Finally, the ZTA composites exhibited flexural and comprehensive strength as high as 640.3 and 6.9 MPa, and dimensional precision as low as 37.5 and 43.5 μm on top and side surface, together with simultaneously enhanced isotropy on mechanical property and surface quality, well satisfying the demands for all‐porcelain crowns fabricating. This study provides thorough understandings on isotropy regulating of DLP‐shaped ZTA all‐porcelain crowns with excellent mechanical performance and surface quality.

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Evaluation Of Anisotropy On Mechanical Propertiesmentioning

confidence: 99%

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Zhou,

Zhang,

Zhang

2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…10 Fortunately, the emergence and development of 3D printing (3DP) technology provides a new technological way to form complex shaped ceramic cores. [11][12][13][14][15][16][17][18] In particular, vat photopolymerization 3DP is capable of forming complex ceramic structures with high precision and integration, which is very suitable for the preparation of complex shaped ceramic cores.…”

Section: Introductionmentioning

confidence: 99%

“…Effects of polyamide 6 (PA6) fiber on the flexural strength of porous Al 2 O 3 ceramics: (A) Contrast with S0; (B) Effects of PA6 fiber with different diameter and content. F I G U R E 9 Comparison of flexural strength and open porosity of Al 2 O 3 ceramic cores reported in the literature 9,11,12,18,21,23,26,27,29,[33][34][35][37][38][39]. (DLP) Digital light processing; (SLA) Stereolithography apparatus.…”

mentioning

confidence: 99%

Vat photopolymerization 3D printing of Al₂O₃ ceramic cores with strip‐shaped pores by using polyamide 6 fiber template

Zhai,

Chen,

et al. 2024

J Am Ceram Soc.

View full text Add to dashboard Cite

The complex ceramic core used for hollow turbine blades requires high porosity and flexural strength. This work combined vat photopolymerization 3D printing with sacrificial template method to prepare Al2O3 ceramic cores with strip‐shaped pores using polyamide 6 (PA6) fibers as templates. When the porosity was greater than 30%, the maximum flexural strength reached up to 110.48 MPa. The sacrificial templating method improved the porosity of Al2O3 ceramic cores, forming an internal porous structure that combined strip‐shaped large pores with irregularly shaped small pores. The influences of PA6 fiber content and diameter on the shrinkage, porosity, microstructure, and comprehensive properties of alumina ceramic cores were studied, revealing the mechanism of the coexistence of high porosity and high strength.

show abstract

“…Some examples are Digital Beam Melting (EBM), Laminated object manufacturing (LOM), Selective Laser Sintering (SLS), Digital Light Processing (DLP), Fused deposition modeling (FDM), and Stereolithography (SLA). Recently ceramic based porous structures have been fabricated using an SLA-based 3D printing technique [14][15][16] which has biomedical applications as well [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Surface modification of stereolithography-based 3D printed structures utilizing ultrasonic-atomised sprays

et al. 2023

View full text Add to dashboard Cite

Stereolithography (SLA)-based three-dimensional (3D) printing has become a popular tool for creating experimental models to study the two-phase flow behavior in complex flow structures. The main drawback while implementing such models is the wettability nature of the 3D printed surfaces. As non-geological materials are used while printing the porous designs, the flow mechanics do not follow similar patterns as in the reservoir. This work demonstrates the feasibility of using an SLA-based printing technique to replicate a porous structure. The porosity and pore size values of the 3D print are observed to be very close to that of the porous input image of the rock sample. A simple method to modify the surface characteristics of 3D printed surfaces using an ultrasonic-atomized fine spraying technique is developed. Here a thin layer of CaCO3 is deposited on the 3D printed surface by subjecting it to fine alternate sprays of calcium chloride and sodium carbonate. Thirty cycles of coating are observed to have altered the surface's wettability from neutral to oil-wet, resembling a carbonate reservoir. Graphical abstract Ultrasonic assisted coating of 3D-printed surfaces.

show abstract

Enhanced comprehensive properties of stereolithography 3D printed alumina ceramic cores with high porosities by a powder gradation design

Cited by 46 publications

References 47 publications

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Vat photopolymerization 3D printing of Al₂O₃ ceramic cores with strip‐shaped pores by using polyamide 6 fiber template

Surface modification of stereolithography-based 3D printed structures utilizing ultrasonic-atomised sprays

Contact Info

Product

Resources

About

Enhanced comprehensive properties of stereolithography 3D printed alumina ceramic cores with high porosities by a powder gradation design

Cited by 46 publications

References 47 publications

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Fabrication of ZTA crowns with simultaneously improved isotropy on mechanical property and surface quality by DLP

Vat photopolymerization 3D printing of Al2O3 ceramic cores with strip‐shaped pores by using polyamide 6 fiber template

Surface modification of stereolithography-based 3D printed structures utilizing ultrasonic-atomised sprays

Contact Info

Product

Resources

About

Vat photopolymerization 3D printing of Al₂O₃ ceramic cores with strip‐shaped pores by using polyamide 6 fiber template