Effects of Preparation Methods on the Microstructure and Mechanical Properties of Graphene-Reinforced Alumina Matrix Composites
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Fabrication of Al2O3-G by One-Step Feeding Method
2.3. Fabrication of Al2O3-G by Stepwise Feeding Method
2.4. Material Characterization
2.5. Mechanical Testing
3. Results and Discussion
3.1. Effects of Graphene Dispersion on the Microstructure of Composites
3.2. Effects of Sintering Temperatures on the Microstructure of Composites
3.3. Effect of Feeding Methods on the Mechanical Properties of Composites
3.4. Effects of Sintering Temperatures on Mechanical Properties of Composites
3.5. Effects of Sintering Pressure on Mechanical Properties of Composites
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
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Name | Feeding Method | Relative Density (%) | Bending Strength (MPa) | Fracture Toughness (MPa·m1/2) | Vickers Hardness (GPa) |
---|---|---|---|---|---|
Al2O3-G-O | one-step | 98.72 | 434.17 | 5.18 | 18.70 |
Al2O3-G-M | multistep | 99.60 | 754.20 | 7.50 | 21.0 |
Sintering Temperature/°C | Average Grain Size/ μm | Maximum Grain Size/ μm |
---|---|---|
1500 | 0.77 | 1.27 |
1525 | 1.57 | 3.06 |
1550 | 2.39 | 4.91 |
1575 | 2.50 | 4.97 |
1600 | 2.69 | 5.29 |
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Zhang, D.; Wu, X.; Jia, B.; Jiang, H.; Liu, Y.; Wang, R.; Yang, Q.; Wu, H.; Wu, C. Effects of Preparation Methods on the Microstructure and Mechanical Properties of Graphene-Reinforced Alumina Matrix Composites. Materials 2022, 15, 5445. https://doi.org/10.3390/ma15155445
Zhang D, Wu X, Jia B, Jiang H, Liu Y, Wang R, Yang Q, Wu H, Wu C. Effects of Preparation Methods on the Microstructure and Mechanical Properties of Graphene-Reinforced Alumina Matrix Composites. Materials. 2022; 15(15):5445. https://doi.org/10.3390/ma15155445
Chicago/Turabian StyleZhang, Danxia, Xiaoqian Wu, Bi Jia, Hanmei Jiang, Yin Liu, Rong Wang, Qian Yang, Huiming Wu, and Chunyan Wu. 2022. "Effects of Preparation Methods on the Microstructure and Mechanical Properties of Graphene-Reinforced Alumina Matrix Composites" Materials 15, no. 15: 5445. https://doi.org/10.3390/ma15155445