Phase Equilibria and Magnetic Phases in the Ce-Fe-Co-B System
Abstract
:1. Introduction
2. Literature Review
2.1. Ternary Systems
2.2. Quaternary System
3. Materials and Methods
4. Results and Discussion
4.1. Diffusion Couples Results
4.2. MFM Study on Diffusion Couples
4.3. Key Alloys Study
4.3.1. Homogeneity ranges of Ce2(Fe, Co)14B and Ce(Co, Fe)4B
4.3.2. Homogeneity ranges of Ce(Co, Fe)12B6 and Ce3(Co, Fe)11B4
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Diffusion Couple | Layer | Composition (at. %) | Corresponding Phase | |||
---|---|---|---|---|---|---|
Ce | Fe | Co | B | |||
DC1 (Ce2Fe14B/Co) | 1 | 12 | 82–73 | 0–9 | 6 | Ce2(Fe, Co)14B |
0 | 100–93 | 0–7 | 0 | α-(Fe, Co) | ||
2 | 11 | 79–34 | 10–55 | 0 | Ce2(Fe, Co)17 | |
0 | 93–57 | 7–43 | 0 | α-(Fe, Co) | ||
3 | 16 | 9 | 59 | 16 | Ce(Co, Fe)4B | |
0 | 57–39 | 43–61 | 0 | α-(Fe, Co) | ||
4 | 11 | 19 | 70 | 0 | Ce2(Co, Fe)17 | |
0 | 39 | 61 | 0 | α-(Fe, Co) | ||
5 | 0 | 35–30 | 65–70 | 0 | α-(Fe, Co) | |
6 | 0 | 12 | 88 | 0 | γ-(Fe, Co) | |
11 | 2 | 87 | 0 | Ce2(Co, Fe)17 | ||
DC2 (Ce13Fe80B7/Co90Ce10) | 1 | 12 | 82–60 | 0–22 | 6 | Ce2(Fe, Co)14B |
0 | 100–82 | 0–18 | 0 | α-(Fe, Co) | ||
2 | 15 | 27–17 | 42–52 | 16 | Ce(Co, Fe)4B | |
0 | 82–37 | 18–63 | 0 | α-(Fe, Co) | ||
3 | 0 | 35–33 | 65–67 | 0 | α-(Fe, Co) | |
4 | 16 | 6–1 | 63–68 | 15 | Ce(Co, Fe)4B | |
11 | 14 | 75 | 0 | Ce2(Co, Fe)17 | ||
5 | 0 | 11–0 | 89–100 | 0 | γ-(Fe, Co) | |
11 | 14–0 | 75–89 | 0 | Ce2(Co, Fe)17 | ||
DC3 (Ce10Fe75B15/Co) | 1 | 12 | 82–65 | 0–17 | 6 | Ce2(Fe, Co)14B |
0 | 100–70 | 0–30 | 0 | α-(Fe, Co) | ||
13 | 38 | 4 | 45 | Ce13Fe38Co4B45 | ||
2 | 16 | 21–5 | 40–56 | 23 | Ce3(Co, Fe)11B4 | |
0 | 70–44 | 30–56 | 0 | α-(Fe, Co) | ||
3 | 6 | 11 | 53 | 30 | Ce(Co, Fe)12B5 | |
4 | 0 | 33–30 | 67–70 | 0 | α-(Fe, Co) | |
DC4 (Ce15Fe43Co19B23/Co) | 1 | 16 | 45–40 | 23–28 | 16 | Ce(Co, Fe)4B |
0 | 17 | 83 | 0 | α-(Fe, Co) | ||
13 | 32 | 10 | 45 | Ce13Fe32Co10B45 | ||
2 | 17 | 23–9 | 37–51 | 23 | Ce3(Co, Fe)11B4 | |
0 | 65–53 | 35–47 | 0 | α-(Fe, Co) | ||
3 | 6 | 18–9 | 46–55 | 30 | Ce(Co, Fe)12B5 | |
0 | 53 | 47 | 0 | α-(Fe, Co) | ||
4 | 0 | 31 | 69 | 0 | α-(Fe, Co) | |
5 | 0 | 14–11 | 86–89 | 0 | γ-(Fe, Co) |
Key Alloys Number | Actual Global Composition (at. %) | WDS Composition (at. %) | Corresponding Phases | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Ce | Fe | Co | B | Ce | Fe | Co | B | By WDS | By XRD | |
KA 1 | 14 | 73 | 7 | 6 | 12 | 76 | 6 | 6 | Ce2(Fe, Co)14B | Ce2(Fe, Co)14B |
13 | 39 | 3 | 45 | Ce13Fe39Co3B45 | N/A * | |||||
KA 2 | 15 | 66 | 12 | 7 | 12 | 71 | 11 | 6 | Ce2(Fe, Co)14B | Ce2(Fe, Co)14B |
16 | 54 | 15 | 15 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
36 | 41 | 23 | 0 | CeFeCo | CeFeCo | |||||
KA 3 | 14 | 58 | 20 | 8 | 12 | 64 | 18 | 6 | Ce2(Fe, Co)14B | Ce2(Fe, Co)14B |
16 | 46 | 23 | 15 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 86 | 14 | 0 | α-(Fe, Co) | α-(Fe, Co) | |||||
KA 4 | 15 | 54 | 24 | 7 | 12 | 60 | 22 | 6 | Ce2(Fe, Co)14B | Ce2(Fe, Co)14B |
16 | 40 | 28 | 16 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 80 | 20 | 0 | α-(Fe, Co) | α-(Fe, Co) | |||||
KA 5 | 14 | 46 | 32 | 8 | 12 | 54 | 28 | 6 | Ce2(Fe, Co)14B | Ce2(Fe, Co)14B |
16 | 33 | 35 | 16 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 76 | 24 | 0 | α-(Fe, Co) | α-(Fe, Co) | |||||
KA 6 | 12 | 42 | 40 | 6 | 11 | 48 | 41 | 0 | Ce2(Fe, Co)17 | Ce2(Fe, Co)17 |
16 | 23 | 45 | 16 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 66 | 34 | 0 | α-(Fe, Co) | α-(Fe, Co) | |||||
KA 7 | 12 | 32 | 50 | 6 | 11 | 37 | 52 | 0 | Ce2(Fe, Co)17 | Ce2(Fe, Co)17 |
17 | 13 | 54 | 16 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 57 | 43 | 0 | α-(Fe, Co) | α-(Fe, Co) | |||||
KA 8 | 12 | 22 | 60 | 6 | 11 | 24 | 65 | 0 | Ce2(Fe, Co)17 | Ce2(Fe, Co)17 |
17 | 7 | 60 | 16 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 56 | 44 | 0 | α-(Fe, Co) | α-(Fe, Co) |
Key Alloys Number | Actual Global Composition (at. %) | WDS Composition (at. %) | Corresponding Phases | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Ce | Fe | Co | B | Ce | Fe | Co | B | By WDS | By XRD | |
KA 9 | 9 | 7 | 56 | 28 | 6 | 4 | 60 | 30 | Ce(Co, Fe)12B6 | Ce(Co, Fe)12B6 |
0 | 16 | 63 | 21 | Fe16Co63B21 | N/A * | |||||
KA 10 | 16 | 8 | 51 | 25 | 17 | 5 | 55 | 23 | Ce3(Co, Fe)11B4 | Ce3(Co, Fe)11B4 |
6 | 14 | 51 | 29 | Ce(Co, Fe)12B6 | Ce(Co, Fe)12B6 | |||||
KA 11 | 17 | 18 | 43 | 22 | 17 | 14 | 46 | 23 | Ce3(Co, Fe)11B4 | Ce3(Co, Fe)11B4 |
6 | 32 | 32 | 30 | Ce(Co, Fe)12B6 | Ce(Co, Fe)12B6 | |||||
KA 12 | 17 | 33 | 27 | 23 | 17 | 28 | 32 | 23 | Ce3(Co, Fe)11B4 | Ce3(Co, Fe)11B4 |
6 | 46 | 18 | 30 | Ce(Co, Fe)12B6 | Ce(Co, Fe)12B6 | |||||
17 | 39 | 27 | 17 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
KA 13 | 17 | 42 | 18 | 23 | 17 | 37 | 23 | 23 | Ce3(Co, Fe)11B4 | Ce3(Co, Fe)11B4 |
16 | 47 | 20 | 17 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
13 | 34 | 8 | 45 | Ce13Fe34Co8B45 | N/A * | |||||
KA 14 | 17 | 50 | 10 | 23 | 16 | 55 | 12 | 17 | Ce(Co, Fe)4B | Ce(Co, Fe)4B |
13 | 37 | 5 | 45 | Ce13Fe37Co5B45 | N/A * | |||||
35 | 45 | 20 | 0 | CeFeCo | CeFeCo | |||||
KA 15 | 15 | 20 | 49 | 16 | 17 | 16 | 44 | 23 | Ce3(Co, Fe)11B4 | Ce3(Co, Fe)11B4 |
16 | 26 | 42 | 16 | Ce(Co, Fe)4B | Ce(Co, Fe)4B | |||||
0 | 68 | 32 | 0 | α-(Fe, Co) | α-(Fe, Co) |
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Wang, T.; Kevorkov, D.; Medraj, M. Phase Equilibria and Magnetic Phases in the Ce-Fe-Co-B System. Materials 2017, 10, 16. https://doi.org/10.3390/ma10010016
Wang T, Kevorkov D, Medraj M. Phase Equilibria and Magnetic Phases in the Ce-Fe-Co-B System. Materials. 2017; 10(1):16. https://doi.org/10.3390/ma10010016
Chicago/Turabian StyleWang, Tian, Dmytro Kevorkov, and Mamoun Medraj. 2017. "Phase Equilibria and Magnetic Phases in the Ce-Fe-Co-B System" Materials 10, no. 1: 16. https://doi.org/10.3390/ma10010016
APA StyleWang, T., Kevorkov, D., & Medraj, M. (2017). Phase Equilibria and Magnetic Phases in the Ce-Fe-Co-B System. Materials, 10(1), 16. https://doi.org/10.3390/ma10010016