Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Yu. N. Vil'k"'
Publikováno v:
Refractories and Industrial Ceramics. 42:146-150
Results of a theoretical analysis of the Schottky and anti-Frenkel defect formation in α-BN carried out within the framework of an ionic model and quasi-chemical approximation are presented. Equations for describing of the α-BN point defect formati
Autor:
Yu. N. Vil'k
Publikováno v:
Refractories and Industrial Ceramics. 42:280-284
Results of an electron microscopic and x-ray diffraction study and data on dispersivity (obtained using a microanalyzer) and density (obtained using a helium pycnometer) of powders in the ZrO2 – Al2O3 system containing 93.54 – 100 wt.% ZrO2 are p
Publikováno v:
Refractories and Industrial Ceramics. 41:131-134
Results of a study of the possibility of using some tungsten-free ceramic materials based on borides, oxides, and nitrides for the finishing treatment of precision parts of fuel equipment are considered. The materials were estimated with respect to t
Publikováno v:
Refractories and Industrial Ceramics. 41:40-45
Quasichemical equations describing the dependences of the number density of defects formed in HfO2 by the Schottky, Frenkel, and anti-Frenkel mechanisms as a function of the partial pressure of oxygen and the temperature are derived and solved. Equat
Publikováno v:
Refractories and Industrial Ceramics. 40:275-278
Kinetic equations of the dependence of the wear of corundum-graphite monoblock stoppers in the slag line and the head on the temperature of the steel in the intermediate ladle in continuous casting are derived as a result of a full-scale experiment.
Autor:
Yu. N. Vil'k
Publikováno v:
Refractories and Industrial Ceramics. 40:146-149
The method of isodefect sections is used to study the concentration dependence of partial activities of components in the TiNy — TiCx. field of the titanium-nitrogen-carbon system at 1273 K. The amount of defects in the alloys is expressed in terms
Autor:
Yu. N. Vil'k
Publikováno v:
Refractories and Industrial Ceramics. 39:242-245
Results of an electron-microscopic study (including microdiflraction) and a x-ray laser microanalyzer study of the dispersity of powders in the ZrO2-A12O3 system containing from 94.9 to 29.6% ZrO2 and obtained by plasmachemical synthesis are presente
Autor:
A. P. Garshin, Yu. N. Vil'k
Publikováno v:
Refractories. 37:255-261
Results of petrographic, x-ray, chemical, and spectral investigations of the structure and composition of materials based on SiC fabricated by reaction sintering of preforms pressed from grainy silicon carbide and its mixtures with petroleum coke in
Autor:
Yu. N. Vil'k
Publikováno v:
Refractories. 37:88-91
Zirconia-based ceramic articles produced by the Klein and Syntek Keramik firms (Germany) are investigated by the methods of x-ray, luminescent, and ultrasound analyses. The density, the porosity, ultimate bending strength at room temperature, Weibull
Publikováno v:
Refractories. 36:247-251
Phenomenological equations are suggested for describing the processes of disordering in electron and ion subsystems. Dependences of the concentration of point defects on the partial pressure of oxygen for each kind of defect are obtained in the cours