d., yurii
The great prospects for introducing the cold sintering process (CSP) into industry determine the importance of finding approaches to reduce the processing time and mechanical pressure required to obtain dense ceramics using CSP. The introducing zinc acetate into the initial ZnO powder of methods, such as impregnation, thermovapor autoclave treatmen...
Chizhikov, A. P. Konstantinov, A. S. Bazhin, P. M.
Published in
Russian Journal of Inorganic Chemistry
Abstract―The aim of this work is to synthesize ceramic composite materials based on aluminum-magnesium spinel strengthened by titanium diboride particles by the self-propagating high-temperature synthesis (SHS) and study the combustion characteristics of synthesized materials, their microstructure, and phase composition. For the synthesis of materi...
Harb, Osama Al-Zordk, Walid Özcan, Mutlu Sakrana, Amal Abdelsamad
Published in
Materials
Background: The aim of this study was to test the impact of hot acids etching and two types of adhesive cement on the retention of zirconia crowns. Methods: Forty maxillary premolars were prepared, and zirconia crowns were designed and fabricated with proximal extensions, then divided into 4 groups (n = 10). Group AP; the crowns were air-abraded an...
Stolyarova, V. L. Vorozhtcov, V. A.
Published in
Russian Journal of Physical Chemistry A
AbstractAdvantages and comparison of thermal analysis (TA) and Knudsen effusion mass spectrometry (KEMS) were discussed for the investigation of high temperature behavior of oxide systems such as ceramics and glass-forming melts. This brief overview proposes filling the gap by considering various approaches of interaction between the TA and KEMS da...
Shcherbakova, G. I. Kutinova, N. B. Varfolomeev, M. S. Drachev, A. I. Kuznetsova, M. G. Storozhenko, P. A.
Published in
Russian Chemical Bulletin
Ceramic-forming organochromiumoxane yttriumoxane alumoxane oligomers with a given molar ratio of Al: Cr and Al: Y, hydrolytically stable in air, have been synthesized. The materials demonstrate fiber-forming properties. It is established that thermal treatment of the obtained oligomers leads to the formation of high purity, heat-resistant multicomp...
Bragov, A. M. Chuvil’deev, V. N. Melekhin, N. V. Boldin, M. S. Balandin, V. V. Nokhrin, A. V. Popov, A. A.
Published in
Journal of Applied Mechanics and Technical Physics
Spark plasma sintering and a standard sintering method are used to manufacture ceramic plates with a diameter of 30 mm from aluminum oxide powder with a fraction size approximately equal to 3 µm. Dynamic strength of the ceramics obtained is studied. Dynamic loading is carried out by a hardened steel impactor. It is shown that energy dissipation in ...
Buchilin, N. V. Basargin, O. V. Varrik, N. M. Lugovoi, A. A.
Published in
Inorganic Materials
Abstract—We have studied the sintering of ceramic samples based on magnesium oxide, alumina, and magnesium aluminate spinel in order to assess the conceptual feasibility of producing ceramic foam materials in the Al2O3–MgO system and examined the effect of sintering aids on the sintering process. The range of firing temperatures has been found that...
Lavrinenko, V. I.
Published in
Journal of Superhard Materials
It is shown for the first time that the presence of porous space in cutting-tool ceramics makes it possible to influence, through water absorption, the performance of diamond machining of such ceramics and, first of all, improve their machinability. The effective duration of water pre-saturation of oxide-carbide ceramics has been found to be 48 h. ...
Fokin, P. V. Solis Pinargote, N. W. Kuznetsova, E. V. Peretyagin, P. Y. Smirnov, A.
Published in
Inorganic Materials: Applied Research
This paper presents a study on graphene-reinforced alumina ceramic composites and the resulting mechanical and electrical properties. Three drying methods were chosen for the fabrication of the initial mixtures: spray, freeze, and vacuum. Spark plasma sintering was chosen as a method of consolidating mixtures. A combination of spray drying and spar...
Gorshkov, V. A. Miloserdov, P. A. Yukhvid, V. I. Sachkova, N. V. Kovalev, I. D.
Published in
Inorganic Materials
Experimental data are presented on the high-temperature synthesis of cast inorganic materials in the MgO–Al2O3 system. Experiments were carried out in multipurpose self-propagating high-temperature synthesis (SHS) reactors at an argon pressure p = 5 MPa. The starting mixtures used in the experiments consisted of molybdenum(VI) and magnesium(II) oxi...