Sintering characteristic, crystal structure and microwave dielectric properties of a novel thermally stable ultra-low-firing Na2BiMg2V3O12 ceramic

Zhou, Huanfu; Miao, Yanbing; Chen, Jie; Chen, Xiuli; He, Fei; Ma, Dandan

doi:10.1007/s10854-014-1897-z

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…The microwave-assisted hydrothermal (MAH) synthesis of inorganic metal oxides has been intensified as a result of the advantages of this method in the production of nanometric materials (superconductors, catalysts, adsorbents, sensors, magnetic and ceramic materials) with controlled morphologies (nanowires, nanorods, nanofibers, etc.) among which are: rapid heating at the reaction temperature and high rates of reactive crystallization with the elimination of undesirable metastable phases [7][8][9][10]. During microwave radiation, the heating mechanisms involved are dipolar polarization and/or ionic conduction as a result of the interactions of dielectric materials (liquid and solids) with the microwave electromagnetic field.…”

Section: Introductionmentioning

confidence: 99%

Microwave radiation influence on the thermal and spectroscopic properties of Na-birnessite-type material

et al. 2019

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The aim of this work was to study the effect of the microwave radiation on the thermal and spectroscopic features, as well as about arrangement (order-disorder) and morphological properties, of the layered manganese oxide with birnessite-type structure. The route employed to obtain Na-birnessite matrix was redox precipitation. The products were characterized by X-ray diffraction, thermal analysis (TG-DTG-DSC), infrared (FTIR) and Raman spectroscopy, scanning electron microscopy (SEM) and nitrogen adsorption-desorption technique. The results showed that microwave radiation influenced in a short time (5 min) the octahedral ordering of birnessite, as well as in increasing the crystallite size. Thermal analysis showed that the thermal behavior of the lamellar matrix was different from that of birnessite under microwave radiation. After microwave-assisted hydrothermal treatment, FTIR and Raman spectroscopy investigations were used to differentiate ordered and disordered birnessites. Otherwise, there were no changes in SEM morphology of the lamellar-type phases, but the particle size changed.

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Section: Introductionmentioning

confidence: 99%

Microwave radiation influence on the thermal and spectroscopic properties of Na-birnessite-type material

et al. 2019

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“…In order to fulfill the requirement of the low‐temperature co‐fired ceramics (LTCC) technology, the dielectrics should be well sintered below 950°C to cofire with Ag . Nowadays, extensive research has been also carried out on ultralow‐temperature cofired ceramics with sintering temperatures of less than 700°C, such as glass‐ceramics, molybdates, vanadates, tungstates, tellurates‐based ceramics, etc …”

Section: Introductionmentioning

confidence: 99%

“…1,2 Nowadays, extensive research has been also carried out on ultralow-temperature cofired ceramics with sintering temperatures of less than 700°C, such as glassceramics, molybdates, vanadates, tungstates, telluratesbased ceramics, etc. [3][4][5] Rock salt-structured Li 2 MO 3 (M = Ti, Sn, Zr) ceramics have been extensively investigated in recent years. However, their possible practical applications in LTCC were restricted by relatively high sintering temperatures (>1200°C).Porous microstructures might be common shortcomings for Li-based compounds because the Li volatilization becomes serious at high temperatures, although some modifications were made by forming solid solutions with ZnO, MgO or NiO.…”

Section: Introductionmentioning

confidence: 99%

Liquid‐phase sintering, microstructural evolution, and microwave dielectric properties of Li₂Mg₃SnO₆–LiF ceramics

et al. 2017

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The liquid‐phase sintering behavior and microstructural evolution of x wt% LiF aided Li2Mg3SnO6 ceramics (x = 1‐7) were investigated for the purpose to prepare dense phase‐pure ceramic samples. The grain and pore morphology, density variation, and phase structures were especially correlated with the subsequent microwave dielectric properties. The experimental results demonstrate a typical liquid‐phase sintering in LiF–Li2Mg3SnO6 ceramics, in which LiF proves to be an effective sintering aid for the Li2Mg3SnO6 ceramic and obviously reduces its optimum sintering temperature from ~1200°C to ~850°C. The actual sample density and microstructure (grain and pores) strongly depended on both the amount of LiF additive and the sintering temperature. Higher sintering temperature tended to cause the formation of closed pores in Li2Mg3SnO6‐x wt% LiF ceramics owing to the increase in the migration ability of grain boundary. An obvious transition of fracture modes from transgranular to intergranular ones was observed approximately at x = 4. A single‐phase dense Li2Mg3SnO6 ceramic could be obtained in the temperature range of 875°C‐1100°C, beyond which the secondary phase Li4MgSn2O7 (<850°C) and Mg2SnO4 (>1100°C) appeared. Excellent microwave dielectric properties of Q × f = 230 000‐330 000 GHz, εr = ~10.5 and τf = ~−40 ppm/°C were obtained for Li2Mg3SnO6 ceramics with x = 2‐5 as sintered at ~1150°C. For LTCC applications, a desirable Q × f value of ~133 000 GHz could be achieved in samples with x = 3‐4 as sintered at 875°C.

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“…The current trend is to develop genuine low firing ceramics and the most recent investigations have explored the applicability of garnet structure compounds containing vanadium element, which show some interesting physical properties such as dielectric and luminescence [5][6][7][8][9][10]. In our previous work, the Ca 5 A 4 (VO 4 ) 6 (A = Mg, Zn, Co) ceramics sintered at below 900°C exhibited good microwave dielectric properties [11,12].…”

Section: Introductionmentioning

confidence: 99%

Microwave dielectric properties of low temperature sintering Ca5Mn4(VO4)6 ceramics

Yao

Chen

Liu

et al. 2016

J Mater Sci: Mater Electron

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Low temperature sinterable Ca 5 Mn 4 (VO 4 ) 6 ceramics were fabricated by the conventional solid-state reaction route and their microwave dielectric properties were investigated for the first time. The formation of Ca 5 Mn 4 (VO 4 ) 6 main phase was confirmed by XRD diffraction pattern. The correlations between sintering temperature, packing fraction, and microwave dielectric properties in Ca 5 Mn 4 (VO 4 ) 6 ceramics were also studied. The Ca 5 Mn 4 (VO 4 ) 6 ceramics sintered at 875°C for 5 h possessed good microwave dielectric properties: e r = 11.2, Q 9 f = 33, 800 GHz (at 10.5 GHz) and s f = -70 ppm/°C . The material was found to react seriously with Ag when sintered at 875°C, forming (AgCa 2 )Mn 2 (VO 4 ) 3 phase.

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Sintering characteristic, crystal structure and microwave dielectric properties of a novel thermally stable ultra-low-firing Na2BiMg2V3O12 ceramic

Cited by 10 publications

References 17 publications

Microwave radiation influence on the thermal and spectroscopic properties of Na-birnessite-type material

Microwave radiation influence on the thermal and spectroscopic properties of Na-birnessite-type material

Liquid‐phase sintering, microstructural evolution, and microwave dielectric properties of Li₂Mg₃SnO₆–LiF ceramics

Microwave dielectric properties of low temperature sintering Ca5Mn4(VO4)6 ceramics

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Sintering characteristic, crystal structure and microwave dielectric properties of a novel thermally stable ultra-low-firing Na2BiMg2V3O12 ceramic

Cited by 10 publications

References 17 publications

Microwave radiation influence on the thermal and spectroscopic properties of Na-birnessite-type material

Microwave radiation influence on the thermal and spectroscopic properties of Na-birnessite-type material

Liquid‐phase sintering, microstructural evolution, and microwave dielectric properties of Li2Mg3SnO6–LiF ceramics

Microwave dielectric properties of low temperature sintering Ca5Mn4(VO4)6 ceramics

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Liquid‐phase sintering, microstructural evolution, and microwave dielectric properties of Li₂Mg₃SnO₆–LiF ceramics