Vat Photopolymerization of Sepiolite Fiber and 316L Stainless Steel-Reinforced Alumina with Functionally Graded Structures
Abstract
:1. Introduction
2. Experiments and Measurement Procedures
2.1. Material Preparation
2.2. Preparation of Toughened Al2O3 Ceramics with SFs and 316L SS
2.3. Characterization
3. Results and Discussion
3.1. Debinding and Sintering of VPP-Printed Green Bodies
3.2. Effects on Physical Properties
3.3. Effects on Mechanical Properties
4. Conclusions
- A novel gradient printing process was proposed, distinguished from conventional VPP printing techniques by its method of creating green bodies with varying second-phase particle ratios across different layers.
- Experimental results indicate that Al2O3 parts printed through this process exhibit optimal performance when the content of SF and 316L SS is 6 wt.%, with shrinkage rates of 17.38%, 23.156%, and 19.316% in the X, Y, and Z directions, respectively, a porosity rate of 15.34%, and a water absorption rate of 5.935%.
- A more significant conclusion is that compared to Al2O3 parts without added SF and 316L SS, their flexural strength and toughness increased by 490.32% and 420.8%, respectively.
- This study provides implications for future research into the introduction of multiple second-phase particles for gradient printing of Al2O3 ceramics.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Grain Size | Element | Al2O3 | Fe2O3 | CaO | Na2O | TiO2 | MgO | K2O | SiO2 |
---|---|---|---|---|---|---|---|---|---|
100 nm | Wt.% | ≥99.9 | 0.01 | 0.02 | 0.02 | 0.01 | <0.01 | 0.01 | <0.01 |
500 nm | Wt.% | 99.9 | 0.0257 | — | 0.0153 | 0.0102 | — | 0.0086 | 0.0201 |
Element | Fe | Cr | Ni | Mo | Mn | Si | N | O | P | S | C |
---|---|---|---|---|---|---|---|---|---|---|---|
Wt.% | Balance | 17 | 2.5 | 12 | 0.69 | 0.17 | 0.03 | 0.0226 | 0.005 | 0.0045 | 0.69 |
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Liu, C.; Wu, H.; Guo, A.; Kong, D.; Zhao, Z.; Wang, L.; Yin, L.; Xia, G.; Su, X.; Hu, Y. Vat Photopolymerization of Sepiolite Fiber and 316L Stainless Steel-Reinforced Alumina with Functionally Graded Structures. Materials 2024, 17, 2973. https://doi.org/10.3390/ma17122973
Liu C, Wu H, Guo A, Kong D, Zhao Z, Wang L, Yin L, Xia G, Su X, Hu Y. Vat Photopolymerization of Sepiolite Fiber and 316L Stainless Steel-Reinforced Alumina with Functionally Graded Structures. Materials. 2024; 17(12):2973. https://doi.org/10.3390/ma17122973
Chicago/Turabian StyleLiu, Chang, Hailong Wu, Anfu Guo, Dekun Kong, Zhengyu Zhao, Lu Wang, Lvfa Yin, Guojun Xia, Xiaofei Su, and Yingbin Hu. 2024. "Vat Photopolymerization of Sepiolite Fiber and 316L Stainless Steel-Reinforced Alumina with Functionally Graded Structures" Materials 17, no. 12: 2973. https://doi.org/10.3390/ma17122973