View in EDS

Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples.

Saved in:
Bibliographic Details
Title: Accelerated study of magnetic Fe-Co-Ni alloys through compositionally graded spark plasma sintered samples.
Authors: Chaudhary, V.1 (AUTHOR) varun004@e.ntu.edu.sg, Tan, Li Ping1 (AUTHOR), Sharma, Vinay K.1 (AUTHOR), Ramanujan, R.V.1 (AUTHOR) ramanujan@ntu.edu.sg
Source: Journal of Alloys & Compounds. Jul2021, Vol. 869, pN.PAG-N.PAG. 1p.
Subjects: Magnetic alloys, Ternary alloys, Magnetic materials, Cobalt nickel alloys, Magnetic shielding, Functionally gradient materials, Magnets, Curie temperature
Abstract: • Functionally graded magnetic materials prepared by spark plasma sintering (SPS). • Accelerated magnetic materials screening using these SPS samples. • Graded Ni-21Fe-xCo sample exhibits an enormous difference in relevant properties with cobalt content. 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 T c , high M s , and large hardness. An alloy library with a wide range of properties, M s : 100–150 emu/g, H c : 0.8–30 Oe, T c : 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. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:• Functionally graded magnetic materials prepared by spark plasma sintering (SPS). • Accelerated magnetic materials screening using these SPS samples. • Graded Ni-21Fe-xCo sample exhibits an enormous difference in relevant properties with cobalt content. 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 T c , high M s , and large hardness. An alloy library with a wide range of properties, M s : 100–150 emu/g, H c : 0.8–30 Oe, T c : 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. [ABSTRACT FROM AUTHOR]
ISSN:09258388
DOI:10.1016/j.jallcom.2021.159318