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In this paper, the controllable γ-Fe2O3/Fe3O4 composite nanoparticles were prepared by low-temperature low-vacuum oxidation of Fe3O4 directly in different time. The Fe3O4 nanoparticles were synthesized by chemical co-precipitation, and they were almost spherical particles and had no significant changes during the thermal oxidation. The prepared samples were identified by X-ray powder diffraction (XRD),...
A new 3D printing process, 3D gel-printing (3DGP) based on methaerylate-2-hydroxy ethyl (HEMA) gelation system, was proposed in this paper, and as an example, 316L stainless steel gear was prepared by 3DGP. The rheological behavior of metal slurry, the surface roughness and strength of green sample and sintered sample were researched. The results show that the metal slurry with a 316L particle content...
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