Densification rate and phase structure changes during sintering of zinc titanate ceramics

Nikolić, Maria Vesna; Labus, Nebojša; Ristić, M.M.

doi:10.1016/j.ceramint.2009.05.028

Cited by 14 publications

(7 citation statements)

References 16 publications

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“…The room temperature dielectric value obtained at applied frequency of 1MHz (figure 6(b)) is 43 which is higher than that reported for ZnTiO 3 prepared by chemical deposition of 25 [27] and solid-state conventional method of 30 [22]. This obtained dielectric value suggests the uses of present titanates as a co-fired ceramic or resonator ceramics [27].…”

Section: Ac-conductivitymentioning

confidence: 61%

“…Others [18][19][20] succeeded to prepare pure ZnTiO 3 phase using sol-gel methods. On the other hand, many researchers [14,17,[21][22][23] obtained a mixture of titanates such as ZnTiO 3 , Zn 2 Ti 3 O 8 and Zn 2 TiO 4 with Zn 2 TiO 4 as major phase. Ivanova et al [24] and Yan et al [25] prepared Zn 2 TiO 4 , TiO 2 and ZnO via sol-gel and hydrothermal routes, respectively using 1:1 mole ratio of Zn:Ti mixture.…”

Section: Introductionmentioning

confidence: 99%

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Zinc titanates nanopowders: synthesis and characterization

Gabal¹,

Angari²

2022

Mater. Res. Express

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Zinc titanates nanopowders viz.; Zn2TiO4, ZnTi3O8 and ZnTiO3 were synthesized through the thermal decomposition course of ZnC2O4.2H2O-TiO2 precursors mixture (1:1 mole ratio), prepared via a new co-precipitation method up to 900°C. Thermogravimetric measurement (TG) was utilized to characterize the precursors mixture decomposition while X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) were used to characterize the decomposition products as well as the phase transitions at different temperatures. XRD revealed the starting of titanates formation at 700°C via detecting Zn2TiO4 along with ZnO and TiO2 (anatase) diffraction peaks. By increasing the calcination temperature to 800°C, the ZnO content vanished with the appearing of Zn2Ti3O8 besides ZnTi2O4 and impurities of TiO2 (anatase). Finally at 900°C, the Zn2Ti3O8 content was decomposed into ZnTiO3. Nitrogen adsorption-desorption isotherm of the calcined precursors mixture at 900°C indicated low specific surface area of 7.1 m2 g-1 in accordance with the agglomeration nature estimated via transmission electron microscopy (TEM) study. The conductivity measurements showed semiconducting behavior of the prepared titanates with ferroelectric transition in the range 200-308°C.The obtained low dielectric value suggests the uses of present titanates as a co-fired ceramic or resonator ceramics.

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Section: Ac-conductivitymentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Zinc titanates nanopowders: synthesis and characterization

Gabal¹,

Angari²

2022

Mater. Res. Express

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“…Others [20][21][22] succeeded to prepare pure ZnTiO3 phase using sol-gel methods. On the other hand, many researchers [19,[23][24][25][26] obtained a mixture of titanates such as ZnTiO3, Zn2Ti3O8 and Zn2TiO4 with Zn2TiO4 as major phase. Ivanova et al [27] and Yan et al [28] prepared Zn2TiO4, TiO2 and ZnO via sol-gel and hydrothermal routes, respectively using 1:1 mole ratio of Zn:Ti mixture.…”

Section: B X-ray Diffraction and Titanates Formationmentioning

confidence: 99%

Zinc Titanate Nanopowders. Synthesis and Characterization

Gabal

Angari

2021

Preprint

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Zinc titanates nanopowders viz.; Zn2TiO4, ZnTi3O8 and ZnTiO3 were synthesized through the thermal decomposition course of ZnC2O4.2H2O-TiO2 precursor (1:1 mole ratio), prepared via a new co-precipitation method up to 900oC. Thermogravimetric measurement (TG) was utilized to characterize the precursor decomposition while X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) were used to characterize the decomposition products as well as the phase transitions at different temperatures. XRD revealed the starting of titanates formation at 700oC via detecting Zn2TiO4 along with ZnO and TiO2 (anatase) diffraction peaks. By increasing the calcination temperature to 800oC, the ZnO content vanished with the appearing of Zn2Ti3O8 besides ZnTi2O4 and impurities of TiO2 (anatase). Finally at 900oC, the Zn2Ti3O8 content was decomposed into ZnTiO3. Nitrogen adsorption-desorption isotherm of the calcined precursor at 900oC indicated low specific surface area of 7.1 m2 g-1 in accordance with the agglomeration nature estimated via transmission electron microscopy (TEM) study. The conductivity measurements showed semiconducting behavior of the prepared titanates with ferroelectric transition in the range 200-308oC.The obtained low dielectric value suggests the uses of present titanates as a co-fired ceramic or resonator ceramics.

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“…The above sintering temperatures were established on the basis of initial exploratory runs that were conducted on a few compositions sintered at different temperatures from 1100 to 1200 • C for 4 h [9,11,13,14]. Subsequently, only the samples that showed the maximum sintered densities were characterized further.…”

Section: Sintering Of a Single (Ortho-titanate Tetragonal) Phase Matementioning

confidence: 99%