Preparation of BaTi4O9 - BaPr2Ti4O12 Composite Powders via Ethylenediaminetetraacetic Acid Precursor


Article Preview

BaTi4O9 - BaPr2Ti4O12 microwave dielectric ceramic composite powders were prepared by a polyacrylamide gel route using ethylenediaminetetraacetic acids (EDTA) as a chelating agent. This method provides a fast, cheap, reproducible and easy to scale-up way to prepare homogeneous mixed phases compounds. A light green, molecular-level, homogeneously mixed gel was prepared by the gelification of acrylamide. The precursors and derived oxide powders were characterized by thermal analysis (TG-DSC) and X-ray powder diffraction (XRD). Two phases and well-crystallized BaTi4O9 - BaPr2Ti4O12 composite powders were obtained at 1200 °C for 4 h.



Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong




Y. Song et al., "Preparation of BaTi4O9 - BaPr2Ti4O12 Composite Powders via Ethylenediaminetetraacetic Acid Precursor", Key Engineering Materials, Vols. 336-338, pp. 246-248, 2007

Online since:

April 2007




[1] A.E. Paladino: J. Am. Ceram. Soc. Vol. 54 (1971), p.1689.

[2] K. Fukuda, R. Kitoh and I. Awai: J. Mater. Sci. Vol. 30(1995), p.1209.

[3] Y. Song, F.P. Wang and Z.H. Jiang: Ceram. Inter. Vol. 28(2002), p.685.

[4] S.Q. Wu, Y.Y. Liu, L. He and F.P. Wang: Mater. Lett. Vol. 58(2004), p.2772.

[5] Y.B. Xu, X.M. Chen and L.B. Wang: J. Am. Ceram. Soc. Vol. 84(2001), p.669.