摘要
为制备可应用于脉冲电源电容器领域的高性能电介质陶瓷,本工作通过传统固相反应法制得致密且均匀的NBT-ST基无铅弛豫铁电陶瓷。其中NBT-ST-1Ce陶瓷的室温储能密度达到1.07 J/cm~3,储能效率稳定在80%以上。此外,该陶瓷的储能效率展现了良好的温度稳定性:在25~150℃范围内,储能效率稳定在95%左右。因此,该介质材料在脉冲电源电容器领域具有一定的发展潜力。
In order to prepare high performance dielectric ceramics which can be used in the field of pulse power capacitors, a compact and uniform NBT-ST based lead-free relaxor ferroelectric ceramics were prepared by the traditional solid-state reaction method. The energy storage density of NBT-ST-1 Ce ceramic sample at room temperature was 1.07 J/cm~3, and the energy storage efficiency was more than 80%. In addition, the ene-rgy storage efficiency of the ceramics showed a very good temperature stability which was around 95% in the temperature range of 25—150 ℃. Therefore, this kind of dielectric material has exhibited a very good potential in the field of pulse power capacitors applications.
引文
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