Dispersing and doping of BaTiO3 powder by adsorption

Taolong Su

doi:10.1007/s11595-007-5644-7

Journal of Wuhan University of Technology Materials Science Edition ›› 2008, Vol. 23 ›› Issue (5) :644 -646. DOI: 10.1007/s11595-007-5644-7

Article

Dispersing and doping of BaTiO₃ powder by adsorption

Taolong Su ¹^,^{^{^a}}

Author information +

History +

PDF

Abstract

Dispersing and doping of BaTiO₃ powder by adsorption method were investigated. Ultrafine BaTiO₃ powders were dispersed in the aqueous with ammoniumized citrate (NH₄-CA) or ammoniumized citric lanthanum chelate (NH₄-La-CA) as dispersant by ultrasonic bath. Better dispersion of BaTiO₃ slurry was obtained in the aqueous with NH₄-La-CA than that of NH₄-CA when the mass ratio of citric acid (CA) to BaTiO₃ was less than 0.007. The pH value hardly affects the dispersion property of BaTiO₃ suspension dispersed by NH₄-La-CA. BaTiO₃ powder could be well dispersed (median size D ₅₀=0.45 μm) and also doped with high uniformity of added components by adsorbing citric acid chelate on surface. Compared with solid mixing, better microstructure and properties of La/Mn codoped ceramics were obtained by adsorption method.

Keywords

BaTiO₃ / adsorption / dispersion / doping

Cite this article

Download citation ▾

Taolong Su. Dispersing and doping of BaTiO₃ powder by adsorption. Journal of Wuhan University of Technology Materials Science Edition, 2008, 23(5): 644-646 DOI:10.1007/s11595-007-5644-7

登录浏览全文

4963

注册一个新账户忘记密码

References

Publishing order | Descend order by publishing year | Descend order by cited within

[1]	Blanco-Lopez M. C., Rand B., Riley F. L. The Properties of Aqueous Phase Suspensions of Barium Titanate[J]. J. Eur. Ceram. Soc., 1997, 17: 281-287.

[2]	Wang X. Y., Lu S. W., Lee B. I. Dispersion and Aging Behavior of BaTiO₃ and PZT in Water[J]. Mater. Res. Bull., 2000, 35: 2 555-2 563.

[3]	Xue J. M., Li C. E., Zhao M. Y., . Study on Preparation of PTC Powder by Particle-surface Modifying Method[J]. J. Inorg. Mater., 1996, 11(2): 232-236.

[4]	Wang L. Y. Research on Preparation of Mn Doped Y Ba-TiO₃ PTCR Ceramics with the Grain Surface Modification Technology[J]. Electron. Compon. Mater., 1997, 16(1): 21-23.

[5]	Vanhoyland G., Pagnaer J., Haen J. D., . Characterization and Structural Study of Lanthanum Citrate Trihydrate [La(C₆H₅O₇)(H₂O)₂]·H₂O[J]. J. Solid State Chem., 2005, 178: 166-171.

[6]	Carlos G. Y., Heberto B. R., Froylaân M. Colloidal Processing of BaTiO₃ Using Ammonium Polyacrylate as Dispersant [J]. Ceram. Int., 2000, 26: 609-616.