Influence of spark plasma sintering parameters on magnetic properties of FeCo alloy

Abstract

Equiatomic FeCo alloys with average particle size of 24 μm were sintered using spark plasma sintering (SPS) system at sintering temperatures of 1100, 800, and 850 °C for heating rates 50, 100, 300 °C/min by applying pressure of 50 MPa instantly at room temperature for sintering time of 5 and 15 minutes. The highest saturation induction was achieved at SPS conditions of 50 MPa, 50 °C/min, 1100 °C, without dwelling, of value 2.39 T. The saturation induction was improved with extending sintering time, the coercivity was higher in samples sintered at a fast heating rate in comparison to the slowest heating rate.

Process Optimization of In Situ Magnetic-Anisotropy Spark Plasma Sintering of M-Type-Based Barium Hexaferrite BaFe12O19

“…In contrast to traditional sintering methods such as hot press (HP) or hot isostatic press (HP), spark plasma sintering (SPS) is a relatively new sintering process for the densification of various ceramic or metallic systems at a low sintering temperature and a very short sintering time [ 22 , 23 , 24 , 25 , 26 , 27 ]. SPS-compacted M-type barium-based hexaferrite bulk magnets have previously been published, but all samples showed only magnetically isotropic behavior [ 28 , 29 , 30 , 31 ].…”

Exceptional Soft Magnetic Properties of an Ordered Multi-principal Element Alloy with Disordered Nanoprecipitates

“…Fig.63D plot compiling room-temperature M s , H c , and ρ for a variety of single-phase[16][17][18][19][20][21] and dual-phase[3,[19][20][21][22][23] MPEAs as well as conventional FeCo alloys[23,[44][45][46][47][48] …”