Silicide coating stabilized high temperature performance and oxidation resistance mechanism of 2:17-type SmCo permanent magnets
Source abstract
Abstract
Abstract A silicide coating has been prepared on 2:17-type SmCo-based permanent magnets by pack cementation method. Compared with the original magnets, the silicide coated magnets exhibit superior thermal stability and oxidation resistance in 500 ℃ atmospheric environments. The oxidation mass gain follows a logarithmic function with time instead of parabolic function of the original magnets. Further microstructure investigation indicates that the coating comprises CoSi, (Co, Fe)2Si, SmCo2Si2/(Sm, Zr)Co3, and CoFe/Sm2O3 layers. The morphology evolution of the coating during oxidation process has been investigated, and ion diffusion channel blocked oxidation mechanism is proposed to interpret the greatly enhanced thermal stability at 500 ℃.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic and transport properties of perovskites and related materials · Rare-earth and actinide compounds
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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