Preparation of nanosized yttria-stabilized zirconia powders and their characterization

Influence of the nature of iron, aluminium and yttrium organometallic nanocluster precursors on the formation mechanism of ceramic ZrO2 obtained by sol-gel method

“…l(b)). Taking into account that yttrium ions can stabilize well the cubic structure of zirconia [4], and in accordance with the similar data for iron ions [8], it can be proposed that Fe 3+ ions possibly form sumulteneously with y3+ ions the cubic zirconia lattice in reaction with zirconium isopropylate. It can also be proposed that y3+ and Fe 3+ can occupy equivalent positions and can be bound directly to each other or via oxygen bridges.…”

“…Recently there has been an increase of interest in the study of development and structure of single-phase ceramic materials based on zirconium oxide [1][2][3][4]. One of the promising advances in the field is the solgel process using alkoxides and other organometallic precursors, predominantly heteronuclear alkoxides [5][6][7][8][9].…”

Microporous and mesoporous 8YSZ materials derived from polymeric acetylacetone-modified precursors for inorganic membrane applications

“…The phase structure should be stabilized for high-temperature applications. A thermally stable phase structure of the zirconia membrane can be obtained by substitution with Y 2 O 3 [3,[6][7][8][9], La 2 O 3 [10], NiO [11], MgO [12], CeO 2 [13] and CaO [14,15] in ZrO 2 . The addition of La 2 O 3 and Y 2 O 3 prevents structure degradation by avoiding ion surface diffusion and consequently crystal growth [10,[16][17][18].…”

Synthesis of Nanosize Yttria-Stabilized Zirconia by a Molecular Decomposition Process

“…There are many reports in the literature on the synthesis of nanosize YSZ powders by processes such as sol}gel process (21), inert gas condensation (22), plasma technique (23), chemical coprecipitation (24), and aerosol combustion (25). All of these methods are based on molecular synthesis of nanoparticles wherein the particles are built-up by an atom-by-atom or by a molecule-by-molecule addition.…”