Synthesis and characterization of barium strontium titanate nano powders by low temperature ambient pressure sol process

Wu, Aiying; Vilarinho, Paula M.; González, Mercedes B.

doi:10.1007/s11051-009-9788-6

Cited by 3 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Особый интерес представляют низкотемпературные методы синтеза титанатов, протекающие при температуре, не превышающей 100 °С, что позволяет снизить энергозатраты на производство материала, избежать агломерации частиц в процессе высокотемпературной обработки и получать наноразмерные порошки. [6][7][8][9][10][11][12][13][14][15] Цель работы заключалась в получении титаната бария низкотемпературным методом, исследовании его структуры и физико-химических свойств.…”

Section: для цитированияunclassified

Low-Temperature Synthesis of Barium Titanite in Aqueous Solution

Агафонов¹,

Иванов²,

Алексеева³

2018

IVUZKKT

View full text Add to dashboard Cite

Barium titanate powder with average particle size near 300 nm was produced using the low-temperature synthesis. It was established using scanning electron microscopy that at the thermal treatment, the particles gradually decrease with the formation of polydisperse aggregates. Based on the thermogravimetric analysis of the synthesized powder held in air for 4 months, it was shown that along with the low-temperature phase, the sample contains a high-temperature phase of carbonates, which removes at ~ 900 °C. Sorption characteristics of barium titanate thermally treated at various temperatures were obtained from the results of adsorption-desorption of nitrogen vapors. The specific surface area of the BaTiO3 powder was 76 m2/g. It was found that further heat treatment leads to a decrease in the specific surface area. The X-ray diffraction analysis of barium hydroxotitanil annealed at temperatures from 120 °C to 800 °C showed that the thermal treatment of the sample leads to the formation of a completely formed phase of barium titanate. The DSC temperature was used to determine the Curie temperatures for a HTB powder thermally treated in the temperature range from 120 to 800 °C. Dielectric spectra of suspensions of the synthesized powder were obtained during the heat treatment. <span style="opacity: 0;"> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . </span>

show abstract