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Your search keyword '"Goldberg, M."' showing total 20 results
Start Over Author "Goldberg, M." Journal doklady chemistry
20 results on '"Goldberg, M."'

19. Effect of Co2+ on the Phase Formation, Mechanical Properties, and In Vitro Behavior of Ceramics in the ZrO2–Al2O3 System.

Author

Obolkina, T. O., Goldberg, M. A., Smirnov, S. V., Konovalov, A. A., Antonova, O. S., Akhmedova, S. A., Kirsanova, V. A., Sviridova, I. K., Sergeeva, N. S., Barinov, S. M., and Komlev, V. S.

Subjects
*CERAMIC materials, *CERAMICS, *MICROSTRUCTURE, *MICROHARDNESS, *POROSITY, *BEHAVIOR, *ALUMINUM foam
Abstract

The effect of the introduction of Co2+ to ZrO2–10 wt % Al2O3 ceramic materials on their phase composition, porosity, microstructure, strength, microhardness, cytotoxicity, and cytocompatibility was studied. It was shown that the addition of Co2+ stabilizes the tetragonal form of ZrO2, which is the only form in sintering at 1400°С. An increase in the sintering temperature leads to the formation of the monoclinic form of ZrO2 and subsequent increase in its amount. Densely sintered ceramic materials were obtained, which had a strength of more than 860 MPa, a microhardness of up to 11 GPa, and the composition ZrO2–10 wt % Al2O3–3.8 mol % CoO (3 mol % of the introduced Co2+ cation). In vitro tests demonstrated that the materials are cytocompatible. The introduction of cobalt ions to ZrO2–10 wt % Al2O3 ceramics improves the matrix (for cells) properties. [ABSTRACT FROM AUTHOR]

Published
2020
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20. The Influence of Manganese Oxide on the Sintering and Properties of the Eutectic Ceramics of the ZrO2–Al2O3–SiO2 System.

Author

Smirnov, V. V., Smirnov, S. V., Obolkina, T. O., Antonova, O. S., Goldberg, M. A., and Barinov, S. M.

Subjects
MANGANESE oxides, CERAMICS, SINTERING
Abstract

The sintering, microstructure, and phase composition of the eutectic ceramics of the ZrO2–Al2O3–SiO2 system with an MnO additive have been studied. It has been shown that the additive contributes to the decrease in the sintering temperature to 1250–1350°С. The synthesized materials have a high content of the tetragonal phase, a fine crystalline structure with a grain size of 100–600 nm, and high flexural strength up to 420 MPa. The developed low-temperature materials can find application in mechanical engineering as high-temperature machine parts and refractory materials. [ABSTRACT FROM AUTHOR]

Published
2019
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