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Highly nonlinear electrically insulating materials have applications in high voltage cable applications. In this contribution, nanocomposites were prepared by blending ZnO nanoparticles or ZnO nanoparticles treated with aqueous SnX2 (X = F or Cl), with EPDM (ethylene propylene diene monomer). The treated powders were a heterogeneous mixture of ZnO and SnO and show enhanced nonlinearity compared to...
Grain-boundary (Gb) diffusion was studied in ultrafine grained Nd2Fe14B-based permanent magnets below and above the melting transition of the Nd-enriched intergranular phase using the radiotracer technique with the isotope 59Fe. The product δDGb of interface diffusion coefficient and interface thickness shows a substantial increase above the intergranular melting transition. Assuming a volume self-diffusivity...
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