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We show that combining high temperature chlorination with the chemical sensitivity of the A-atom planes of single crystals of some nano-lamellar MAX phases allows one to synthesize highly porous and electrically conducting carbides. Focusing on the case of porous Cr3C2, we present the dependence of the layer morphology, structure and formation kinetics on processing parameters such as temperature...
Crystallite growth characteristics in Y-TZP (yttria-tetragonal zirconia polycrystals) and YSZ (yttria-stabilized cubic zirconia) powders and their compacts were compared. When holding at ≤ 1000°C the crystallite size of Y-TZP is greater than YSZ both in powders and in compacted bodies, but the crystallites of YSZ grow faster than Y-TZP at elevated temperatures and the grain size of YSZ becomes larger...
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