Fabrication and analysis of mischmetal MM-Fe-B magnetic alloy
Source abstract
Abstract
Mischmetal (MM 30Nd 70) 30.4Fe 68.2Al 0.4Cu 0.2B 0.8 bulk magnets have been prepared with strip casting method followed by hydrogen decrepitating, jet milling, sintering and annealing. Process conditions to achieve optimum magnetic properties have been established through experimentations. XRD studies revealed main tetragonal RE 2Fe 14B phase and less RE-rich and CeFe 2 phases. Microscopic examinations elucidated that magnet microstructure composed of main magnetically MM 2Fe 14B hard phase, RE-rich intergranular phase and magnetically soft CeFe 2 phase. Henkel plot demonstrated the existence of exchange coupling between magnetic phase grains. Thermal studies showed Curie temperature of 278 °C for the Mischmetal (MM 30Nd 70) 30.4Fe 68.2Al 0.4Cu 0.2B 0.8 magnet. Magnetic evaluations provoked coercivity H cj of 619kA/m, remanenec B r of 1.15 T and maximum energy product density of 241 kJ/m 3 for the (MM 30Nd 70) 30.4Fe 68.2Al 0.4Cu 0.2B 0.8 magnetic alloy.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic Properties and Applications · Superconducting Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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