Effect of Oxygen Concentration and Tantalum Addition on the Formation of High Temperature Bismuth Oxide Phase by Mechanochemical Reaction
Abstract
:1. Introduction
2. Experimental Procedures
3. Results and Discussion
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Milling Condition | Milling Time | Crystalline Phases |
---|---|---|
Inside Ar-filled glove box | 5 min | α-Bi2O3 (84.6%) * + Ta (15.4%) |
10 min | α-Bi2O4 (8.1%) + α-Bi2O3 (13.2%) + Bi (23.4%) + δ-Bi3TaO7 (52.8%) + Ta (2.5%) | |
15 min | α-Bi2O4 (8.3%) + α-Bi2O3 (3.8%) + Bi (44.4%) + δ-Bi3TaO7 (41.5%) + Ta (2.0%) | |
20 min | α-Bi2O4 (8.7%) + Bi (47.8%) + δ-Bi3TaO7 (41.4%) + Ta (2.0%) | |
25 min | α-Bi2O4 (8.7%) + Bi (49.9%) + δ-Bi3TaO7 (40.0%) + Ta (1.4%) | |
30 min | α-Bi2O4 (8.2%) + Bi (52.9%) + δ-Bi3TaO7 (37.4%) + Ta (1.5%) | |
1 h | α-Bi2O4 (8.8%) + Bi (60.3%) + δ-Bi3TaO7 (28.6%) + Ta (2.3%) | |
3 h | α-Bi2O4 (9.4%) + Bi (69.7%) + δ-Bi3TaO7 (18.8%) + Ta (3.1%) | |
Under air | 5 min | α-Bi2O4 (5.5%) + α-Bi2O3 (13.0%) + Bi (21.2%) + δ-Bi3TaO7 (58.7%) + Ta (1.6%) |
10 min | α-Bi2O4 (4.5%) + α-Bi2O3 (10.0%) +Bi (33.8%) + δ-Bi3TaO7 (50.5%) + Ta (1.2%) | |
15 min | α-Bi2O4 (5.3%) + Bi (39.5%) + δ-Bi3TaO7 (54.5%) + Ta (0.7%) | |
20 min | α-Bi2O4 (3.0%) + Bi (38.0%) + δ-Bi3TaO7 (58.6%) + Ta (0.4%) | |
25 min | α-Bi2O4 (1.8%) + Bi (42.0%) + δ-Bi3TaO7 (54.1%) + Ta (2.1%) | |
30 min | α-Bi2O4 (5.1%) + Bi (52.8%) + δ-Bi3TaO7 (40.6%) + Ta (1.5%) | |
1 h | α-Bi2O4 (2.9%) + Bi (56.0%) + δ-Bi3TaO7 (40.3%) + Ta (0.8%) | |
3 h | α-Bi2O4 (2.7%) + Bi (71.9%) + δ-Bi3TaO7 (25.4%) |
Milling Condition | Milling Time | Crystalline Phases |
---|---|---|
Inside Ar-filled glove box | 30 min | α-Bi2O3 (56.0%) * + Ta (2.4%) + β-Bi7.8Ta0.2O12.2 (41.6%) |
1 h | α-Bi2O3 (46.2%) + Ta (1.7%) + β-Bi7.8Ta0.2O12.2 (52.1%) | |
3 h | α-Bi2O3 (32.8%) + β-Bi7.8Ta0.2O12.2 (67.2%) | |
10 h | β-Bi7.8Ta0.2O12.2 (90.8%) + Bi (9.2%) |
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Lin, H.-N.; Chen, M.-S.; Chang, Y.-H.; Lee, P.-Y.; Lin, C.-K. Effect of Oxygen Concentration and Tantalum Addition on the Formation of High Temperature Bismuth Oxide Phase by Mechanochemical Reaction. Materials 2019, 12, 1947. https://doi.org/10.3390/ma12121947
Lin H-N, Chen M-S, Chang Y-H, Lee P-Y, Lin C-K. Effect of Oxygen Concentration and Tantalum Addition on the Formation of High Temperature Bismuth Oxide Phase by Mechanochemical Reaction. Materials. 2019; 12(12):1947. https://doi.org/10.3390/ma12121947
Chicago/Turabian StyleLin, Hsiu-Na, May-Show Chen, Yu-Hsueh Chang, Pee-Yew Lee, and Chung-Kwei Lin. 2019. "Effect of Oxygen Concentration and Tantalum Addition on the Formation of High Temperature Bismuth Oxide Phase by Mechanochemical Reaction" Materials 12, no. 12: 1947. https://doi.org/10.3390/ma12121947