Реферат: Lanthanum orthoniobates , alloys (Ni-Co, Ni-Cu, Co-Cu, Ni-Cu-Ag) and nanocomposites were synthesized by the solvothermal method in an alcohol medium. The synthesis was carried in a flow reactor out at parameters exceeding the critical ones for isopropanol. For the first time, La0.99Ca0.01NbO4–δ and nanocomposites with NiCu and NiCo nanoparticles were synthesized using alcohol solutions of salts of the corresponding metals. This method allows us to obtain single-phase complex oxides of La0.99Ca0.01NbO4–δ . Nanocomposites were obtained by two methods: one-pot synthesis and mechanical mixing of the oxides in isopropanol with surfactants. Calcined powders and gastight pellets of orthoniobates and nanocomposites were characterized by X-ray phase analysis, SEM, TEM. Transport characteristics were investigated by Van der Pauw techniques varying measurements temperature in wet H2 atmosphere. High-density ceramics by sintering of powders at 1100 C using the hot pressure technique were developed and nanocomposite show high electronic and ionic conductivity. Their total electrical conductivity is high, up to 10−3 S/cm.

Библиографическая ссылка: Bespalko Y.N.
Simple Approaches to the Fabrication of Materials (Oxides, Alloys, Nanocomposites) Using Supercritical Isopropanol
3rd Edition of International Conference on Materials Science and Engineering 21-22 Sep 2022