Effect of different starting materials on the synthesis of Ba0.8Ca0.2TiO

Autor(es)

Medeiros, P. N. ^[1] ; Araujo, V. D. ^[2] ; Marques, A. P. A. ^[3] ; Tranquilin, R. L. ^[1] ; Paskocimas, C. A. ^[1] ; Bomio, M. R. D. ^[1] ; Varela, J. A. ^[4] ; Longo, E. ^[4] ; Motta, F. V. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Norte, CT, DEMAT, Ave Sen Salgado Filho 3000, BR-59072970 Natal, RN - Brazil

^[2] UFRPE, UACSA, BR-54510000 Cabo De Santo Agostinho, PE - Brazil

^[3] UNIFESP, BR-09972270 Diadema, SP - Brazil

^[4] UNESP, IQ, LIEC, BR-14801907 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ADVANCED CERAMICS; v. 4, n. 1, p. 65-70, MAR 2015.
• Citações Web of Science: 6

Resumo

Literature has reported the synthesis of barium calcium titanates by various synthesis methods such as solid state reaction, co-precipitation and polymer precursors. These compounds are usually obtained using calcium carbonate (CaCO3), barium carbonate (BaCO3) and titanium oxide as starting materials. This study investigated the effect of different starting reagents on the synthesis of Ba0.8Ca0.2TiO3 (BCT) by complex polymerization method (CPM). Two sets of starting precursors were used: titanium citrate, CaCO3 and BaCO3, and titanium citrate and Ba1-xCaxCO3 solid solution precursor. Samples were crystallized at a temperature range from 400 degrees C to 700 degrees C for different time. The obtained powders were characterized by X-ray diffraction (XRD), thermogravimetry (TG) and differential thermal analysis (DTA), and Raman and infrared spectroscopy. The infrared spectroscopy indicated that the chelation processes of Ba, Ca, Ti and CA ions are very similar. The results showed that the use of CaCO3 and BaCO3 or Ba1-xCaxCO3 solid solution as precursors does not affect the final properties of BCT powders obtained by CPM. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs