Relationship between the synthesis and structure of ceramic precursors of the TiO  2 ‒CeO  2 ‒ZrO 2  system

O. Yu. Kurapova; S. N. Golubev; A. G. Glukharev; V. G. Konakov

doi:10.17073/1683-4518-2020-2-59-64

Relationship between the synthesis and structure of ceramic precursors of the TiO ₂‒CeO ₂‒ZrO₂ system

O. Yu. Kurapova, S. N. Golubev, A. G. Glukharev, V. G. Konakov

https://doi.org/10.17073/1683-4518-2020-2-59-64

Full Text:

Abstract

The tetragonal solid solutions based on the TiO₂‒CeO₂‒ZrO₂ system are stable up to 1350 °С were obtained. With the method of pH-metric titration of a mixture of starting salts the competitive processes of hydrolysis and precipitation in a three-component system were investigated. The microstructure and specific surface of precursors after synthesis were studied. A detailed study of phase formation in precursors in the range of 600‒1350 °С was carried out by the methods of STA, XRD, and laser sedimentography. It was shown that, when the temperature rises to 1100 °С, competitive phase formation takes place, which is accompanied by deagglomeration in the system to 1000 °С for all the studied compositions.

Keywords

zirconium dioxide, cerium dioxide, thermal barrier coatings, freeze drying, three-component ceramic,

About the Authors

O. Yu. Kurapova

ФГБОУ ВО «Санкт-Петербургский государственный университет»; ФГАОУ ВО «Санкт-Петербургский государственный политехнический университет Петра Великого»
Russian Federation

S. N. Golubev

ООО «НТЦ Стекло и Керамика»
Russian Federation

A. G. Glukharev

V. G. Konakov

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Supplementary files

For citation: Kurapova O.Y., Golubev S.N., Glukharev A.G., Konakov V.G. Relationship between the synthesis and structure of ceramic precursors of the TiO ₂‒CeO ₂‒ZrO₂ system. NOVYE OGNEUPORY (NEW REFRACTORIES). 2020;(2):59-64. https://doi.org/10.17073/1683-4518-2020-2-59-64

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NOVYE OGNEUPORY (NEW REFRACTORIES)

Relationship between the synthesis and structure of ceramic precursors of the TiO 2‒CeO 2‒ZrO2 system