Mechanical activation of the synthesis reaction of BaTiO3 from a mixture of BaCO3 and TiO2 powders

Gómez-Yáñez, Carlos; Benitez, C; Balmori‐Ramírez, Heberto

doi:10.1016/s0272-8842(99)00053-x

Cited by 114 publications

(50 citation statements)

References 9 publications

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“…Since it is known that dielectric constant increases with smaller grain size or higher density [20], it is expected that dielectric constant values obtained in this project can be further increased if grain growth can be further minimized. It is expected that by increasing the density and, as previously mentioned, reducing the grain size, the dielectric and piezoelectric properties can be enhanced sufficiently to enable the manufacture of geometrically complex high-K dielectrics necessary for ultra-capacitors or conformal piezoelectric structures for customized energy harvesting applications.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of barium titanate by binder jetting additive manufacturing technology

Gaytan

Cadena

Karim

et al. 2015

Ceramics International

187

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Fabrication of barium titanate (BaTiO 3 ) specimens was accomplished with binder jetting additive manufacturing, and build parameters (e.g. binder saturation and layer thickness) and sintering profiles were modified to optimize the density achieved and the crystal structures obtained in the 3D printed parts. Surface and cross sectional grain morphology was characterized by scanning electron microscopy (SEM) revealing grain growth on localized areas of BTO fabricated specimens after sintering. Crystal structure was analyzed by X-ray diffraction (XRD) where the presence of a hexagonal phase was observed for 2 BaTiO 3 only when sintered at 1400ºC. The dielectric constant of the fabricated BaTiO 3 specimens sintered at 1260ºC was obtained by using a K u -band wave-guide and vector network analyzer setup in which the relative permittivity was measured from 8.6 to 6.23 for a frequency range of 12.4 to 18 GHz, respectively. When sintered at 1400ºC for 4 hours, a density of 3.93 g/cm 3 was obtained, which corresponds to 65.2% of the theoretical density.Piezoelectric properties exhibited a d 33 value of 74.1 for specimens also sintered at 1400ºC.Results reported in this paper demonstrate the feasibility of BTO as a binder jetting material for 3D printed dielectric structures, ceramic capacitors and gas and pressure sensors.

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Section: Introductionmentioning

confidence: 99%

Fabrication of barium titanate by binder jetting additive manufacturing technology

Gaytan

Cadena

Karim

et al. 2015

Ceramics International

187

View full text Add to dashboard Cite

show abstract

“…This method tends to produce a significant amount of agglomeration, poor chemical homogeneity and coarse particle size due to the heat treatment at high temperature [3]. With the help of recently available advanced milling facilities and very fine starting materials, however, a few researchers have synthesized 200 nm-sized BaTiO 3 by this method [9][10][11][12][13][14]. Since the solid-state reaction occurs at the contact points of dissimilar materials, highly homogenized fine starting materials are very important for decreasing the reaction temperature and synthesizing fine particles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of fine Ca-doped BaTiO3 powders by solid-state reaction method—Part I: Mechanical activation of starting materials

2007

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Fine (Ba 0.98 Ca 0.02 ) 1.002 TiO 3 powders for high capacitance multilayer ceramic capacitors (MLCCs) application were synthesized by solid state reaction method. The effects of mechanochemical activation using high energy milling and the starting materials properties on the reaction temperature and on the final powder properties were investigated. Previous heavy milling of BaCO 3 and the adoption of fine, anatase-rich TiO 2 phase were effective in decreasing the reaction temperature and in increasing the tetragonality (=c/a). BaCaTiO 3 powders with a tetragonality of 1.0097, an average particle size of 213±43 nm and a specific surface area of 6.30 m 2 /g were acquired after heat treatment at 985°C for 2 h. MLCCs utilizing this developed powder showed superior dielectric and temperature characteristics to those with conventional, Ca-free BaTiO 3 powder.

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“…Various preparation methods for BST have been investigated such as solid-state reaction [9], sol-gel [7,10,11], hydrothermal [12,13], spray pyrolysis [14], combustion synthesis [15], and chemical coprecipitation methods [16] and etc. Compared with other methods, solgel process because of its numerous advantages in producing bariumstrontium titanate ceramics has received a strong attention among researchers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Fe and Ni Co-Doped Ba0.6Sr0.4Tio3Prepared by Sol-Gel Technique

Shaban¹,

Bahar²

2017

J Theor Comput Sci

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Mechanical activation of the synthesis reaction of BaTiO3 from a mixture of BaCO3 and TiO2 powders

Cited by 114 publications

References 9 publications

Fabrication of barium titanate by binder jetting additive manufacturing technology

Fabrication of barium titanate by binder jetting additive manufacturing technology

Synthesis of fine Ca-doped BaTiO3 powders by solid-state reaction method—Part I: Mechanical activation of starting materials

Synthesis and Characterization of Fe and Ni Co-Doped Ba0.6Sr0.4Tio3Prepared by Sol-Gel Technique

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