Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. Founded at 2009

Structure features of barium and calcium titanate ceramics

O.V. Malyshkina, A.I. Ivanova, K.S. Karelina, R.A. Petrov

Tver State University

DOI: 10.26456/pcascnn/2020.12.652

Original article

Abstract: Samples of ceramics based on barium titanate and calcium titanate were obtained and studied. We have analyzed the elemental composition of the obtained composite. It is shown that calcium-barium titanate Ba1-xCaxTiO3 solid solution contains calcium with x < 0,3. In ceramic samples with x ≥ 0,3, an excess of CaTiO3 was recrystallized in individual grains. An increase in the concentration of calcium leads to both a decrease in the size of the samples and a decrease in its density. An increase in the grain size (by several times) of the BaTiO3 ceramics in comparison with the CaTiO3 ceramics leads to a corresponding increase in the microhardness of the samples.

Keywords: barium titanate piezoelectric ceramics, lead-free materials, grain structure

  • Olga V. Malyshkina – Dr. Sc., Full Professor, Head of the Department of Dissertation Councils and Doctorate Studies, Scientific Research Department, Tver State University
  • Alexandra I. Ivanova – Ph. D., Docent of the Applied Physic Department, Tver State University
  • Krisnina S. Karelina – student, Tver State University
  • Roman A. Petrov – student, Tver State University

Reference:

Malyshkina O.V., Ivanova A.I., Karelina K.S., Petrov R.A. Osobennosti struktury keramiki na osnove titanata bariya i titanata kaltsiya [Structure features of barium and calcium titanate ceramics], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2020, issue 12, pp. 652-661. DOI: 10.26456/pcascnn/2020.12.652. ⎘

Full article (in Russian): download PDF file

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