The Effect of CaO Addition on the Microstructural, Mechanical and Dielectric Properties of Pure MgO Ceramic

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High purity MgO is a common ceramic material used as a protecting layer in an alternating current plasma display panel (AC-PDP). In this work, pure MgO was added by CaO for a better protecting layer. The effect of CaO addition was discussed according to the changes in the microstructure, mechanical strength and the ability of the sample to withstand surface breakdown (flashover) with various CaO addition in the powder mixture. In addition, it was found that 2.5 wt% CaO-addition shows a better electrical discharge. Since secondary electron emission coefficient contributes in the electrical discharge, it could be predicted that the 2.5 wt% CaO added MgO has a higher secondary electron emission constant and becomes a promising candidate for a protecting layer in AC-PDP.

Info:

Periodical:

Key Engineering Materials (Volumes 345-346)

Edited by:

S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim

Pages:

1609-1612

Citation:

A. G. E. Sutjipto "The Effect of CaO Addition on the Microstructural, Mechanical and Dielectric Properties of Pure MgO Ceramic ", Key Engineering Materials, Vols. 345-346, pp. 1609-1612, 2007

Online since:

August 2007

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$38.00

[1] S.K. Leea, J.H. Kimb, J. Leeb, K. -W. Whang: Thin Solid Films, Vol. 435 (2003), p.69.

[2] J. Cazaux: J. Appl. Phys., Vol. 85(2) (1999), p.1137.

[3] A.G.E. Sutjipto, T. Okamoto, M. Takata: Key Eng. Mater., Vol. 181-182 (2000), p.231.

[4] W. Johnson, in: Impact strength of materials, Edward Arnold Publ., NY (1972) p.193.

[5] A.G.E. Sutjipto, T. Okamoto, M. Takata: Trans. Mater. Res. Soc. Jpn., Vol. 25(1) (2000), p.193.

[6] A.G.E. Sutjipto, M. Takata: J. Mater Sci. (Accepted to be published in 2007).

[7] W.D. Kingery, H.K. Bowen, D.R. Uhlman, in: Introduction to Ceramics, 2 nd Ed., John Wiley & Sons (1976).

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