Multicomponent solid solutions based on zirconium dioxide

Refractories ◽  
1979 ◽  
Vol 20 (11-12) ◽  
pp. 704-707
Author(s):  
Yu. S. Toropov ◽  
S. Yu. Pliner ◽  
D. S. Rutman ◽  
G. A. Taksis ◽  
A. F. Maurin
Keyword(s):  
Solid Solutions ◽  
Zirconium Dioxide

Influence of vacuum treatment on the physicochemical properties of solid solutions based on zirconium dioxide

Refractories ◽  
1989 ◽  
Vol 30 (9-10) ◽  
pp. 546-549
Author(s):  
T. V. Chusovitina ◽  
Yu. S. Toropov ◽  
G. S. Matveichuk
Keyword(s):  
Physicochemical Properties ◽  
Solid Solutions ◽  
Zirconium Dioxide ◽  
Vacuum Treatment

scholarly journals The dynamics of crystal lattice of solid solutions based on zirconium dioxide

2021 ◽  
Vol 25 (4) ◽  
Author(s):  
V. I. Slisenko ◽  
O. E. Zoteev ◽  
O. A. Vasylkevych ◽  
V. O. Zoteev ◽  
V. V. Krotenko
Keyword(s):  
Crystal Lattice ◽  
Solid Solutions ◽  
Zirconium Dioxide

Synthesis of nanosized zirconium dioxide and its solid solutions with titanium dioxide from the CO2 supercritical fluid

2018 ◽  
Vol 8 (01) ◽  
pp. 59-64
Author(s):  
I.E. Sokolov ◽  
I.A. Konovalov ◽  
R.M. Zakalyukin ◽  
D.V. Golubev ◽  
A.S. Kumskov ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Supercritical Fluid ◽  
Solid Solutions ◽  
Zirconium Dioxide ◽  
Image Position

Abstract

scholarly journals SYNTHESIS OF NANOSIZED ZIRCONIUM DIOXIDE, COBALT OXIDE AND RELATED PHASES IN SUPERCRITICAL CO2 FLUID

2021 ◽  
Vol 64 (5) ◽  
pp. 35-43
Author(s):  
Ilya E. Sokolov ◽  
Valery V. Fomichev ◽  
Ruslan M. Zakalyukin ◽  
Elena V. Kopylova ◽  
Andrey S. Kumskov ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Cobalt Oxide ◽  
Solid Solutions ◽  
Photoelectron Spectroscopy ◽  
Zirconium Dioxide ◽  
Amorphous State ◽  
Continuous Series ◽  
Supply Rate ◽  
Scanning Calorimetry ◽  
X Ray

This study is devoted to obtaining nanoscale zirconium dioxide, cobalt oxide and related phases by SAS method in supercritical carbon dioxide. The synthesized compounds were characterized by a complex of physico-chemical analytical methods: infrared spectroscopy, differential scanning calorimetry, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy. The experimental parameters for obtaining the nanoparticles were: pressure 10 MPa, temperature 40 °C, carbon dioxide supply rate 35 g/min, the initial solution supply rate 0.5 ml/min. Individual phases containing zirconium and cobalt, and also samples with zirconium to cobalt molar ratios 3:1, 2:1, 1:1, 2:1 and 1:3 were obtained. The use of zirconium and cobalt acetylacetonates as initial components leads to formation of stable products – nanoparticles of acetates of the corresponding metals in the X-ray amorphous state. When heated to 340-350 °C, the destruction of organometallic complexes to oxides occurs with formation of a continuous series of X-ray amorphous solid solutions in the ZrO2-CoO system. At temperatures above 600 °C, the phases crystallize with the decomposition of solid solutions into ZrO2 and Co3O4. When temperature is above 900 °C, further oxidation of cobalt occurs. Thus, cobalt oxide oxidation into Co3O4 proceeds in two steps, at 600 and 900 °C. For samples of zirconium dioxide with cobalt oxide admixture at a temperature of 700 °C stabilization of the cubic modification is observed which is probably due to the entry of cobalt into the cubic structure of zirconium oxide, which prevents transition to tetragonal and monoclinic modifications.

scholarly journals Ceramic Restorations Based on Zirconium Dioxide for Orthopedic Dentistry

2021 ◽  
pp. 172-178
Author(s):  
Alina Anatolyevna Muzayeva ◽  
Abulmuslim Magomedovich Nuraliev ◽  
Saida Astanovna Temirova ◽  
Elena Anatolyevna Muzaeva ◽  
Turpal-Ali Arsanovich Adaev ◽  
...  
Keyword(s):  
Ceramic Material ◽  
Solid Solutions ◽  
Zirconium Dioxide ◽  
High Strength ◽  
Scientific Work ◽  
Ceramic Materials ◽  
Strength Parameters ◽  
Ytterbium Oxide ◽  
Biomedical Materials ◽  
Ceramic Restorations

Currently, ceramics based on solid solutions of zirconium dioxide tetragonal structure are common biomedical materials. In commercially common ceramics of orthopedic dentistry based on zirconium dioxide, the stabilization of the tetragonal shape is achieved by the introduction of yttrium or cerium cations. As a result of this scientific work, a ceramic material based on nanopowders of a system of zirconium dioxide and ytterbium oxide with high strength parameters has been developed. The results of the conducted research allow us to recommend the new Yb–TZP ceramics as an alternative to Y–TZP ceramic materials for restorations in orthopedic dentistry.

scholarly journals SRUCTURE AND STABILITY OF SOLID SOLUTIONS CRYSTAL LATTICE BASED ON ZIRCONIUM DIOXIDE

2019 ◽  
Vol 3 (59) ◽  
pp. 59-63
Author(s):  
O. Chulkin ◽  
◽  
V. Kravchenko ◽  
V. Zotyeyev ◽  
O. Zotyeyev ◽  
...  
Keyword(s):  
Crystal Lattice ◽  
Solid Solutions ◽  
Zirconium Dioxide

Surface Films on Zircaloy-2 Samples Cracked in Neutral Aqueous NaCl by Stress Corrosion

1973 ◽  
Vol 31 ◽  
pp. 46-47
Author(s):  
R.A. Ploc
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Film Thickness ◽  
Stress Corrosion ◽  
Zirconium Dioxide ◽  
Surface Film ◽  
Surface Films ◽  
Continuous Layer ◽  
Transmission Electron ◽  
Product Film

Samples of low-nickel Zircaloy-2 (material MLI-788-see(1)), when anodically polarized in neutral 5 wt% NaCl solutions, were found to be susceptible to pitting and stress corrosion cracking. The SEM revealed that pitting of stressed samples was occurring below a 2000Å thick surface film which behaved differently from normal zirconium dioxide in that it did not display interference colours. Since the initial film thickness was approximately 65Å, attempts were made to examine the product film by transmission electron microscopy to deduce composition and how the corrosion environment could penetrate the continuous layer.

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