The crytallite and pore-size evolution during isothermal sintering (400 ≤ T ≤ 700°C) of SnO2 xerogels was studied by X-ray line broadening and nitrogen adsorption-desorption isotherms. The experimental results show a strong ...

The structural evolution during sintering of compacted SnO2 sol-gel powder was investigated using nitrogen adsorption isotherm analysis. Results show that for sintering temperatures up to 400°C the samples have a fractal ...

The mechanical strength of mullite materials sintered by the conventional route or by microwave was evaluated by diametral compression at room temperature and 1400 ◦C. Crack patterns and fracture mechanisms were analyzed ...

The microstructural evolution, grain growth and densification for the varistor systems ZnO-Bi2O3 (ZB), ZnO-Bi2O3-Sb2O3 (ZBS), ZnO-Bi2O3-Sb2O3-MnO-Cr 2O3-CoO (ZBSCCM) were studied using constant heating rate sintering, ...

The Pb(Zr0,52Ti0,48)O3 solid solution in morphotropic phase and its modified (RExPb1-x)(Zr0,52Ti0,48O3) with RE = La, Pr or Nd and x = 0.05, 0.10, 0.15, 0.20, 0.30, 0.38 and 0.45 were satisfctorily prepared by oxidant ...

Microstructured and moldable materials were designed, obtained and characterized as composites from by-products of Cocus nucifera L. and Agave angustifolia Haw. Powders and leached sustances with crosslinking agents ...