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NiO-C0.9Gd0.1O1.95 (NiO-GDC) composites obtained using a chemical route (one-step synthesis) were characterized by thermal analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM) and impedance spectroscopy (between 300 and 650°C in air). Rietveld refinement of XRD data indicated that synthesized powders are ultrafine and the crystallite size of the GDC phase decreases with increasing...
Brazing of Ti2AlC ceramics has been successfully performed using a pure Al filler metal, in the temperature range 1023K–1173K and with holding time ranging from 0 to 30min. The microstructure of the Ti2AlC joints was studied, and the mechanical properties of the joints were evaluated by shear strength test. It is observed that the Al filler has weak effect on the stability of Ti2AlC substrate, and...
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