Research on Sintering Dynamics and Microwave Dielectric Properties of Bi and Mn Doped Lead-Based Ceramics

Abstract:

Article Preview

The sintering dynamics, microstructures and microwave dielectric properties of Bi2O3 and MnO2 co-doped [(Pb,Ca) La](Fe,Nb)O3 (PCLFN) ceramics were investigated. Bi2O3 and MnO2 dopants effectively enhanced bulk densities and reduced sintering temperatures by about 100~140°C. Sintering procedure had significant effect on grain size and porosities of ceramics. Investigation of microstructures revealed that the grain growth was controlled by either volume diffusion or second-order interface mechanism in present ceramics. The potential microwave dielectric properties of εr=91.1,Qf=4870GHz and τf=18.5ppm/°C could be obtained when the mass ratio of Bi2O3/MnO2 (k) was 1, the doping content w=1wt% and sintered at 1050°C for 4h.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

316-319

DOI:

10.4028/www.scientific.net/KEM.336-338.316

Citation:

J. Zhao et al., "Research on Sintering Dynamics and Microwave Dielectric Properties of Bi and Mn Doped Lead-Based Ceramics", Key Engineering Materials, Vols. 336-338, pp. 316-319, 2007

Online since:

April 2007

Export:

Price:

$38.00

[1] S.Y. Cho, H.J. Youn, D.W. Kim, T.G. Kim and K.S. Hong: J. Am. Ceram. Soc. Vol. 81(1998), p.3038.

[2] D.X. Zhou, M.Z. Hu, S.L. Jiang and J. Huang: Brit. Ceram. Trans. Vol. 103 (2004 ), p.197.

[3] D. Zhou, M. Hu, S. Jiang and J. Huang: Mater. Lett. Vol. 58 (2004), p.2684.

[4] M. Hu, D. Zhou, D. Zhang and Y. Hu: Mater. Sci. Eng. B Vol. 99 (2003), p.403.

[5] Q.H. Yang, K.E. Soo and X. Jun: J. Chin. Ceram. Soc. Vol. 31 (2002), p.554.

[6] M.Z. Hu, D.X. Zhou, H.S. Gu and H. Wang: Mater. Sci. Eng. B. Vol. 117 (2005), p.199.

[7] B.W. Hakki and P.D. Coleman: IRE Trans. Microwave Theory Tech. Vol. 8 (1962), p.402.

[8] R.M. Germen: Liquid Phase Sintering (Plenum Publishing, New York 1985).

[9] M.I. Mendelson: J. Am. Ceram. Soc. Vol. 8 (1969), p.443.

[10] J.L. Chermant and M. Coster: Microsc. Vol. 109 (1977), p.269.

In order to see related information, you need to Login.