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      KCI등재 SCIE SCOPUS

      Examining the temperature at which magnesium titanates undergo phase formation in the presence of various sintering accelerators

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      https://www.riss.kr/link?id=A109046326

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      다국어 초록 (Multilingual Abstract)

      The lower phase-forming temperature of magnesium titanate, MgTiO3, means that it can be used to replace magnesium ionswith cobalt ions at 0.05 mole when a mixture of diverse low melting point materials as sintering accelerators is employed(single: B2O3, CuO, V2O5, ZnO; binary: ZnO-B2O3). The phase formation of 0.9Mg0.95Co0.05TiO3 - 0.1 Ca0.61Nd0.78/3TiO3 dielectricceramics was verified using XRD diffraction to observe crystallites at different phases. SEM was used to observe the graingrowth of the ceramic system, and the composition ratio of the grain was analyzed via EDS. Compared with 0.9Mg0.95Co0.05TiO3- 0.1 Ca0.61Nd0.78/3TiO3 dielectric ceramics without the addition of a sintering accelerator, the results show that the sinteringtemperature could be effectively decremented, and the results of the binary addition were better than the single result. Themicrowave dielectric performances of 0.9Mg0.95Co0.05TiO3 - 0.1Ca0.61Nd0.78/3TiO3 dielectric ceramics were closely related tothe density and growth of grains experienced by the specimens. When 1 wt% binary sintering accelerators (ZnO-B2O3) wereadded to 0.9Mg0.95Co0.05TiO3-0.1 Ca0.61Nd0.78/3TiO3 dielectric ceramics, they showed an εr value of 21.7, a Qf value of 42,000 GHz,and a τf value of -27.2 ppm/oC; the phase-forming temperature was minimized from 1350 oC to 1150 oC.
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      The lower phase-forming temperature of magnesium titanate, MgTiO3, means that it can be used to replace magnesium ionswith cobalt ions at 0.05 mole when a mixture of diverse low melting point materials as sintering accelerators is employed(single: B2O...

      The lower phase-forming temperature of magnesium titanate, MgTiO3, means that it can be used to replace magnesium ionswith cobalt ions at 0.05 mole when a mixture of diverse low melting point materials as sintering accelerators is employed(single: B2O3, CuO, V2O5, ZnO; binary: ZnO-B2O3). The phase formation of 0.9Mg0.95Co0.05TiO3 - 0.1 Ca0.61Nd0.78/3TiO3 dielectricceramics was verified using XRD diffraction to observe crystallites at different phases. SEM was used to observe the graingrowth of the ceramic system, and the composition ratio of the grain was analyzed via EDS. Compared with 0.9Mg0.95Co0.05TiO3- 0.1 Ca0.61Nd0.78/3TiO3 dielectric ceramics without the addition of a sintering accelerator, the results show that the sinteringtemperature could be effectively decremented, and the results of the binary addition were better than the single result. Themicrowave dielectric performances of 0.9Mg0.95Co0.05TiO3 - 0.1Ca0.61Nd0.78/3TiO3 dielectric ceramics were closely related tothe density and growth of grains experienced by the specimens. When 1 wt% binary sintering accelerators (ZnO-B2O3) wereadded to 0.9Mg0.95Co0.05TiO3-0.1 Ca0.61Nd0.78/3TiO3 dielectric ceramics, they showed an εr value of 21.7, a Qf value of 42,000 GHz,and a τf value of -27.2 ppm/oC; the phase-forming temperature was minimized from 1350 oC to 1150 oC.

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