Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples
Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark pl...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160760 |
| _version_ | 1826111692034015232 |
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| author | Chaudhary, Varun Tan, Li Ping Sharma, Vinay Ramanujan, Raju V. |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Chaudhary, Varun Tan, Li Ping Sharma, Vinay Ramanujan, Raju V. |
| author_sort | Chaudhary, Varun |
| collection | NTU |
| description | Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated Tc, high Ms, and large hardness. An alloy library with a wide range of properties, Ms: 100–150 emu/g, Hc: 0.8–30 Oe, Tc: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials. |
| first_indexed | 2024-10-01T02:54:37Z |
| format | Journal Article |
| id | ntu-10356/160760 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:54:37Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1607602022-08-02T06:05:09Z Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples Chaudhary, Varun Tan, Li Ping Sharma, Vinay Ramanujan, Raju V. School of Materials Science and Engineering Engineering::Materials Soft Magnets Accelerated Development Soft magnets are extensively deployed in rotating electric machines. Accelerated development of new high Curie temperature, mechanically strong, magnetically soft magnets is urgently needed for next generation rotating electrical machines. The ternary Fe-Co-Ni alloy system was investigated. Spark plasma sintering (SPS) was employed to process compositionally graded (Ni-21Fe)-xCo samples. A combinatorial assessment of structural, magnetic, mechanical and electrical properties of sample sections was performed. Co-lean alloys exhibited a good combination of magnetic, mechanical, and electrical properties but low Curie temperatures. On the other hand, Co rich alloys exhibited elevated Tc, high Ms, and large hardness. An alloy library with a wide range of properties, Ms: 100–150 emu/g, Hc: 0.8–30 Oe, Tc: 571–1108 °C, ρ: 9–12.9 μΩ-cm, nanohardness: 0.96–1.56 GPa was developed. Thus, SPS processed samples can be employed for the accelerated screening of magnetic materials. Agency for Science, Technology and Research (A*STAR) This work is supported by the AME Programmatic Fund by the Agency for Science, Technology and Research, Singapore under Grant No. A1898b0043. 2022-08-02T06:05:09Z 2022-08-02T06:05:09Z 2021 Journal Article Chaudhary, V., Tan, L. P., Sharma, V. & Ramanujan, R. V. (2021). Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples. Journal of Alloys and Compounds, 869, 159318-. https://dx.doi.org/10.1016/j.jallcom.2021.159318 0925-8388 https://hdl.handle.net/10356/160760 10.1016/j.jallcom.2021.159318 2-s2.0-85101717372 869 159318 en A1898b0043 Journal of Alloys and Compounds © 2021 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Materials Soft Magnets Accelerated Development Chaudhary, Varun Tan, Li Ping Sharma, Vinay Ramanujan, Raju V. Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples |
| title | Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples |
| title_full | Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples |
| title_fullStr | Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples |
| title_full_unstemmed | Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples |
| title_short | Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples |
| title_sort | accelerated study of magnetic fe co ni alloys through compositionally graded spark plasma sintered samples |
| topic | Engineering::Materials Soft Magnets Accelerated Development |
| url | https://hdl.handle.net/10356/160760 |
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