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The effects of high-energy ball milling on the synthesis, sintering and microwave dielectric properties of Li2TiO3 ceramics.

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Title: The effects of high-energy ball milling on the synthesis, sintering and microwave dielectric properties of Li2TiO3 ceramics.
Authors: Ghaffari, Somaye1, Ebadzadeh, Touradj1 t-ebadzadeh@merc.ac.ir, Alizadeh, Masoud1, Asadian, Keivan2, Ganjkhanlou, Yadolah3, Shafeeyan, Mohammad Saleh4 ms.shafeeyan@gmail.com
Source: Journal of Materials Science: Materials in Electronics. Jul2018, Vol. 29 Issue 13, p10933-10941. 9p.
Subjects: Chemical synthesis, Sintering, Dielectric properties, Microwaves, Ceramics
Abstract: The effect of high-energy ball milling (HEBM) on the synthesis and sintering of Li2TiO3 was investigated. XRD Phase analysis of milled powders revealed a common phenomenon of peak broadening due to crystallite size reduction and loss of long-range periodicity. Thermal analysis results showed that the formation of Li2TiO3 can be facilitated with high-energy ball mill. Density measurement of sintered parts revealed that milling time of 5 h (HEBM-5) is sufficient to achieve a high density of 3.19 g/cm3 (93.82% of the theoretical density) at low sintering temperature of 1100 °C. The average particle size of synthesized Li2TiO3 powder was about 150 nm. SEM observations revealed the achievement of dense microstructures with abnormal grain growth. Optimal dielectric constant of εr = 21.85, Q × f = 17510 GHz and τf value of + 26 ppm/°C were achieved. Li2TiO3 was also synthesized without high-energy milling and sintered at 1100 °C and the density of 3.03 g/cm3 (89.11% of theoretical density) was achieved. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The effects of high-energy ball milling on the synthesis, sintering and microwave dielectric properties of Li<subscript>2</subscript>TiO<subscript>3</subscript> ceramics.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Jul2018, Vol. 29 Issue 13, p10933-10941. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Chemical+synthesis%22">Chemical synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+properties%22">Dielectric properties</searchLink><br /><searchLink fieldCode="DE" term="%22Microwaves%22">Microwaves</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramics%22">Ceramics</searchLink>
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  Data: The effect of high-energy ball milling (HEBM) on the synthesis and sintering of Li2TiO3 was investigated. XRD Phase analysis of milled powders revealed a common phenomenon of peak broadening due to crystallite size reduction and loss of long-range periodicity. Thermal analysis results showed that the formation of Li2TiO3 can be facilitated with high-energy ball mill. Density measurement of sintered parts revealed that milling time of 5 h (HEBM-5) is sufficient to achieve a high density of 3.19 g/cm3 (93.82% of the theoretical density) at low sintering temperature of 1100 °C. The average particle size of synthesized Li2TiO3 powder was about 150 nm. SEM observations revealed the achievement of dense microstructures with abnormal grain growth. Optimal dielectric constant of εr = 21.85, Q × f = 17510 GHz and τf value of + 26 ppm/°C were achieved. Li2TiO3 was also synthesized without high-energy milling and sintered at 1100 °C and the density of 3.03 g/cm3 (89.11% of theoretical density) was achieved. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10854-018-9171-4
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      – SubjectFull: Dielectric properties
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              Text: Jul2018
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