Iron-stabilized nanocrystalline ZrO2 solid solutions: Synthesis by combustion and thermal stability

Effect of iron impurity on structural development in ball-milled ZrO2–3mol% Y2O3

“…The (QS) value of Fe 3 þ component can also be assigned to the formation of solid solution of t-Zr 0.963 (Y 3 þ ,Fe 3 þ ) 0.037 O 1.982 inside a m-ZrO 2 matrix [24]. The sextet with a magnetic hyperfine field, oH hf 4, equal to 32.882 T is characteristic of α-Fe and this value agrees with the reference works [46][47][48][49]. Nevertheless, the spectrum of the ball-milled product for 30 h (Fig.…”

Synthesis and Characterization of Yttrium Stabilized Zirconia Nanoparticles

“…The peaks are directly related to the 3E g , 2B 1g , and lA 1g symmetries as predicted and reported for the tetragonal phase 17,18 . The Raman spectrum is found to be very similar, except for the observed peak broadening and a slight shift in the E g (2) peak to lower frequencies with yttrium dopant concentration.…”

“…Zirconia (ZrO 2 ) nanoparticles have been reported to have unique properties such as excellent refractoriness, chemical resistance, good mechanical strength, high ionic conductivity, low thermal conductivity at high temperature together with relatively high thermal expansion coefficient and good thermal stability 1,2 . A wide-ranging industrial applications including fabrication of dense ceramics, sensors, batteries, capacitors, corrosionresistant and thermal barrier coatings, solid electrolytes for fuel cells, catalysts, etc.…”

Synthesis of Fe-ZrO2 nanocomposite powders by reduction in H2 of a nanocrystalline (Zr, Fe)O2 solid solution

“…The appropriate amounts of Fe(NO3)3·9H2O and ZrO(NO3)2·xH2O were dissolved in deionized water (20 mL, 70 • C) with seven times the so-called stoichiometric amount of urea, in order to produce 5 g of Zr0.9Fe0.1O1.95 solid solution as described elsewhere [31]. The dish containing the solution was placed in a furnace pre-heated at 600 • C, keeping the door of the furnace open.…”

“…Ringuede et al [30] used a combustion/reduction method for the synthesis of Fe-Y 2 O 3 -ZrO 2 microcomposite powders with large Fe volume fractions (25 and 50%). The present paper presents results on the formation of Fe-ZrO 2 nanocomposite powders by reduction in hydrogen of a totally stabilized Zr 0.9 Fe 0.1 O 1.95 solid solution, the synthesis and characterization of which were reported elsewhere [31]. The study was performed using a combination of techniques including notably Mössbauer spectroscopy.…”