Sintering of titanate based dielectrics doped with lithium fluoride and calcium borosilicate glass

• Autorzy: Hsi, C. S. , Chen, M. Y. , Jantunen, H. , Hsu, F. C. , Lin, T. C.
• Języki publikacji: EN

Abstrakty

EN

The effect of LiF and CBS glass additives on the microstructure and dielectric property of BaTiO3 (BT) ceramics was studied. The phase of BaLiF3 was observed from the interaction between BT and LiF when the samples were sintered at 900 °C for 1 h. Crystal grains with Ba and F in atomic ratios of 1:3 were observed from the SEM and TEM analysis of the microstructures. Abnormal grain growth (AGG) was observed to occur in the BT ceramics sintered at 950 °C. Further improvement to the composition was achieved by employing a two-stage process. This included CBS glass shell coating of the BT particles in the first stage, and the addition of LiF in the second stage. The composition thus formed had very good permittivity (1725) and an extremely low dielectric loss value (0.008).

Słowa kluczowe

EN

dielectrics; low sintering temperature; barium titanate; two stage process

• Czasopismo: Materials Science Poland
• Rocznik: 2011
• Tom: Vol. 29, No. 1
• Strony: 29--34
• Opis fizyczny: Bibliogr. 12 poz.,

Twórcy

autor

Hsi, C. S.

autor

Chen, M. Y.

autor

Jantunen, H.

autor

Hsu, F. C.

autor

Lin, T. C.

• Department of Material Science and Engineering, National United University, Miao-Li 36003, Taiwan

Bibliografia

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• [9] RUIZ-VALD´ES J.J., GOROKHOVSKY A.V.,ESCALANTE-GARC´I A J.I., MENDOZA-SUAREZ,J. Europ. Ceram. Soc., 24 (2004), 1508.
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• [12] LIN T.C., Under-graduate project report, National United University, Taiwan, 2006.