2019/07/01 by E. A. Agarkova, M. A. Borik, М. А. Борик +12 · 6 citations
Chemistry · Materials Science · #Advanced ceramic materials synthesis #Advancements in Solid Oxide Fuel Cells #Analytical Chemistry (journal) #Ceramic #Chemistry #Composite material #Crucible (geodemography) #Crystal structure #Crystallography #Cubic zirconia #Fracture toughness #Indentation hardness #Materials science #Metallurgy #Microstructure #Mineralogy #Nuclear materials and radiation effects #Organic chemistry #Phase (matter) #Solid solution #Tetragonal crystal system #Yttria-stabilized zirconia
paper · doi:10.1134/s0020168519070021
published in Inorganic Materials 55(7), 748-753 (Pleiades Publishing)
crossref issued 2019/07/01 · crossref published 2019/07/01 · crossref published-print 2019/07/01 · openalex publication_date 2019/07/01 · crossref published-online 2019/07/23 · crossref created 2019/07/23 · openalex created_date 2025/10/10 · crossref deposited 2026/03/23 · crossref indexed 2026/07/29 · openalex updated_date 2026/07/31
Crystals of (ZrO2)1 –x – y(Sc2O3)x(Y2O3)y (x = 0.003–0.045, y = 0.005–0.03) solid solutions have been grown by directional solidification in a cold crucible. All of the crystals consist of a mixture of two tetragonal phases of zirconia, t and t', differing in the degree of tetragonality (c/ √ 2 a ): 1.014–1.015 and 1.004–1.005 for the t- and t'-phases, respectively. All of the crystals have high microhardness (13.5–15.0 GPa) and high fracture toughness (on the order of 6–7 MPa m1/2). Their fracture toughness decreases with an increase in the total content of the stabilizing oxides, which is well consistent with the associated changes in phase composition, namely, with the increase in the percentage of the (transformable) t-phase. All of the crystals are similar in electrical conductivity: on the order of 0.04 S/cm at a temperature of 1173 K.