Effect of B2O3 addition on the Sintering of BaTiO3-CaTiO3 Composite Materials
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The effects of B2O3 addition on the sintering behaviour of BaTiO3-CaTiO3 (BCT) materials were investigated. (1-x) BaTiO3-x CaTiO3-y B2O3 (where x is 3 or 7 % mol. and 0 ≤ y ≤ 3 mol.% respectively). Pellets were prepared from BaTiO3 (BT) and CaTiO3 (CT) powders mixture and sintered at 1,200, 1,250, 1,300 and 1,350 oC, gradually in air for 3 h. The relative density of BCT samples with 1 mol. % B2O3 sintered at 1,200 oC were as good as those of undoped BCT sintered at 1,350 oC. When > 2 mol. % B2O3 was added to BCT, the over doped B2O3 did not form a liquid phase or volatilize, it remained in the samples and formed a secondary phase that lowered the sintering behaviour of the BCT. The X-Ray diffraction analysis carried out on both kind of pellets (x = 0.3 and x = 0.7) revealed the presence of BT and CT solutions together in an unidentified secondary phase.
Abstract
The effects of B2O3 addition on the sintering behaviour of BaTiO3-CaTiO3 (BCT) materials were investigated. (1-x) BaTiO3-x CaTiO3-y B2O3 (where x is 3 or 7 % mol. and 0 ≤ y ≤ 3 mol.% respectively). Pellets were prepared from BaTiO3 (BT) and CaTiO3 (CT) powders mixture and sintered at 1,200, 1,250, 1,300 and 1,350 oC, gradually in air for 3 h. The relative density of BCT samples with 1 mol. % B2O3 sintered at 1,200 oC were as good as those of undoped BCT sintered at 1,350 oC. When > 2 mol. % B2O3 was added to BCT, the over doped B2O3 did not form a liquid phase or volatilize, it remained in the samples and formed a secondary phase that lowered the sintering behaviour of the BCT. The X-Ray diffraction analysis carried out on both kind of pellets (x = 0.3 and x = 0.7) revealed the presence of BT and CT solutions together in an unidentified secondary phase.
참고문헌 (9)
- A. B. Kozyrev, , J. Appl. Phys, 84(6), pp.3326~3332 (1998)
- C. L. Chen, , Appl. Phys. Lett, 75(3), pp.412~414 (1999)
- X.X. Xi, , J., Electroceram, 4(2, pp.3) (2000), 393~405
- L. B. Kong, , Progress in Materials Science, 55(8), pp.840~893 (2010)
- W. T. Chang, , J. Appl. Phys, 92(7), pp.3941~3946 (2002)
- M. S. Yoon, , Ceram. Int, 34(8), pp.1941~1948 (2008)
- J. G. Park, , J Mater Sci, 27(11), pp.5713~5719 (1992)
- X. M. Chen, , Mat, Sci. and Eng. B, 113(2), pp.117~120 (2004)
- R. C. Devries, , J. Am. Ceram. Soc, 38(4), pp.142~146 (1955)