Preparation of Barium Titanate Powders by Gel-Solid Reaction

Abstract:

BaTiO₃ ceramic composite powders were prepared by a gel-solid reaction method using the raw materials of two particle sizes, DSC was used to study the thermal decomposition of the green body. The effect of the calcination temperatures on the phase structure of the powders was investigated. The influence of the particle sizes of the raw materials on the reaction temperature and the microstructure of the powders was explored. The results showed that reaction temperature of BaTiO₃ ceramic powders reacted from BaCO₃ of the large size was about 933.0°C, and the one from BaCO₃ of the smaller size was about 903.5°C, respectively. XRD results indicated that BaTiO₃ powders could be prepared at a temperature range of 900°C ~ 1000°C using the raw materials of either size. The particle size of the synthesized powders was determined by the particle size of the raw material. Therefore, the raw materials of small size should be chosen to prepare the synthesized powders of small size, and at a lower reaction temperature.

• Periodical: Advanced Materials Research (Volume 412)
• Pages: 473-476
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.412.473
• Online since: November 2011
• Authors: Chun Rong Jiao, Da Ming Chen, Jian Feng Tong
• Keywords: Barium Titanate (BT), Composite Powders, Gel-Solid Reaction Method

References

[1] J. Guo, Y.B. Hu, Y.F. Xiong, et al.: Sichuan Nonferrous Metals Vol. 2 (2004), p.29.

[2] X.H. Huang, Z.H. Chen: Mater. Rev.

[1] (2003), p.30.

[3] Q.Z. Yan, F.Y. Yang, C.C. Ge, et al.: Powder Metallurgy Industry Vol. 25.

[4] (2004), p.47.

[4] S.G. Du, D.M. Shi, Q.W. Han: Techniques of Powder Metallurgy Vol. 18.

[1] (2000), p.46.

[5] W. Lu, M. Quilitz, H. Schmidt: J. Crys. Grow. Vol. 27 (2007), p.3149.

[6] D.R. Chen, X.L. Jiao: J. Am. Ceram. Soc. Vol. 83 (2000), p.2637.

[7] X.Q. Wu, L.P. Su: Materials Science and Technology Vol. 7 (1999), p.105.

[8] X.L. Zhang, H.L. Wang: Hydrometallurgy of China Vol. 26.

[1] (2007), p.17.

[9] K.H. Felgner, T. Muller, H.T. Langhammer, et al.: Mater. Lett. Vol. 58 (2004), p. (1943).