Mechanochemical synthesis and conducting properties of nanostructured rhombohedral scandia stabilized zirconia ceramics

Material properties of partially pregelatinized cassava starch prepared by mechanical activation

“…In addition, a part of mechanical energy is converted into thermal energy which can also affect the physicochemical properties of the solids, especially the polymers. Currently, MA has been widely used in various fields, such as extractive metallurgy, crystal engineering, nanomatrix composites, agriculture, pharmacy, waste disposal, organic material synthesis, and so on [23][24][25][26]. In our previous studies, MA has been successfully used for the pretreatment of starches, sugarcane bagasse and cassava stillage residue, and the results showed that MA could significantly change the crystalline structures and physicochemical properties of these solid materials and thus enhance their chemical reactivity [27][28][29][30].…”

Comparative studies on properties of scandia-stabilized zirconia synthesized by the polymeric precursor and the polyacrylamide techniques

“…ScSZ tapes were obtained by tape casting to prepare multilayer anode-supported SOFCs [5]. Recently, studies on nanostructured single phase ScSZ prepared by mechanochemical synthesis were reported with excellent mechanical properties but unusual electrical behavior [6]. Scandium oxide may be chemically extracted from rare-earth containing monazite sand in Brazil after purification of rare-earth concentrates [7].…”

Nano- and Microstructure Design by Mechanochemical Approach of Ceramic Ionic Composites on the Base of SSZ

“…Mechanochemical ceramic method is a promising green technique for cost reduced production of nanopowders and especially composites possessing unique properties (9). Obtained nanoceramics displayed unusually high conductivity at low temperatures and simultaneously a slightly lowered conductivity at T ~ 1000 K compared to the best known ceramic oxide electrolytes (6)(7)(8). High conductivity at lower temperatures was related to a composite microstructure of irregular ceramics with remnants of monoclinic ZrO 2 grains (6)(7)(8).…”

“…Recently, it was found that dense nanoceramics with composition Zr 0.89 Sc 0.11 O 1.945 exhibited high performance during longtime testing at high temperatures (5). According to the results of thorough refinement of XRD patterns obtained for similar compositions, the samples display a weak rhombohedral distortion of cubic lattice (6)(7). In our recent studies SSZ ceramics with different compositions were prepared from nanopowders which were obtained by mechanochemical technology from technical grade zirconia followed by purification by leaching after milling (6)(7)(8).…”

“…According to the results of thorough refinement of XRD patterns obtained for similar compositions, the samples display a weak rhombohedral distortion of cubic lattice (6)(7). In our recent studies SSZ ceramics with different compositions were prepared from nanopowders which were obtained by mechanochemical technology from technical grade zirconia followed by purification by leaching after milling (6)(7)(8). Mechanochemical ceramic method is a promising green technique for cost reduced production of nanopowders and especially composites possessing unique properties (9).…”