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Strontium barium sodium niobate tungsten bronze type piezoelectric ceramic material with low sintering temperature and anisotropy and preparation method thereof
The invention discloses a strontium barium sodium niobate tungsten bronze type piezoelectric ceramic material with low sintering temperature and anisotropy and a preparation method thereof. The structural general formula of the ceramic material is Sr1.4Ba0.6NaNb5O15+xwt.%M, M is CuO or MnO2, and the value of x is 0.25-1.0. According to the invention, Sr1.4Ba0.6NaNb5O15 is modified by doping Cu and Mn, so that the sintering temperature of ceramic is greatly reduced, the energy consumption of the ceramic in the sintering process is reduced, and the ceramic is energy-saving and environment-friendly; and meanwhile, the anisotropy of the modified ceramic is obviously reduced after Cu and Mn are doped, the density is obviously improved, the electrical property is further improved, and the obtained ceramic material has a relatively high dielectric constant and relatively low dielectric loss, and in addition, the ceramic material has a relatively good ferroelectric property. The ceramic material disclosed by the invention is simple in preparation method, low in cost, good in repeatability and high in yield, and is expected to provide powerful reference for modification research of the lead-free niobate material with the oriented growth tungsten bronze structure.
本发明公开了一种低烧结温度和各向异性的铌酸锶钡钠钨青铜型压铁电陶瓷材料及其制备方法，该陶瓷材料的结构通式为Sr1.4Ba0.6NaNb5O15+x wt.％M，其中M为CuO或MnO2，x的取值为0.25～1.0。本发明通过Cu、Mn掺杂改性Sr1.4Ba0.6NaNb5O15，大幅度降低了陶瓷的烧结温度，从而降低了陶瓷在烧结过程中的能耗，节能环保；同时，Cu、Mn掺杂改性后陶瓷的各向异性明显降低，致密度显著提高，进而提高了电学性能，所得陶瓷材料具有较高的介电常数、较低的介电损耗，此外陶瓷材料具有较好的铁电性能。本发明制备方法简单、成本低廉、重复性好、成品率高，有望为取向生长的钨青铜结构无铅铌酸盐材料的改性研究提供有力参考。
Strontium barium sodium niobate tungsten bronze type piezoelectric ceramic material with low sintering temperature and anisotropy and preparation method thereof
The invention discloses a strontium barium sodium niobate tungsten bronze type piezoelectric ceramic material with low sintering temperature and anisotropy and a preparation method thereof. The structural general formula of the ceramic material is Sr1.4Ba0.6NaNb5O15+xwt.%M, M is CuO or MnO2, and the value of x is 0.25-1.0. According to the invention, Sr1.4Ba0.6NaNb5O15 is modified by doping Cu and Mn, so that the sintering temperature of ceramic is greatly reduced, the energy consumption of the ceramic in the sintering process is reduced, and the ceramic is energy-saving and environment-friendly; and meanwhile, the anisotropy of the modified ceramic is obviously reduced after Cu and Mn are doped, the density is obviously improved, the electrical property is further improved, and the obtained ceramic material has a relatively high dielectric constant and relatively low dielectric loss, and in addition, the ceramic material has a relatively good ferroelectric property. The ceramic material disclosed by the invention is simple in preparation method, low in cost, good in repeatability and high in yield, and is expected to provide powerful reference for modification research of the lead-free niobate material with the oriented growth tungsten bronze structure.
本发明公开了一种低烧结温度和各向异性的铌酸锶钡钠钨青铜型压铁电陶瓷材料及其制备方法，该陶瓷材料的结构通式为Sr1.4Ba0.6NaNb5O15+x wt.％M，其中M为CuO或MnO2，x的取值为0.25～1.0。本发明通过Cu、Mn掺杂改性Sr1.4Ba0.6NaNb5O15，大幅度降低了陶瓷的烧结温度，从而降低了陶瓷在烧结过程中的能耗，节能环保；同时，Cu、Mn掺杂改性后陶瓷的各向异性明显降低，致密度显著提高，进而提高了电学性能，所得陶瓷材料具有较高的介电常数、较低的介电损耗，此外陶瓷材料具有较好的铁电性能。本发明制备方法简单、成本低廉、重复性好、成品率高，有望为取向生长的钨青铜结构无铅铌酸盐材料的改性研究提供有力参考。
Strontium barium sodium niobate tungsten bronze type piezoelectric ceramic material with low sintering temperature and anisotropy and preparation method thereof
低烧结温度和各向异性的铌酸锶钡钠钨青铜型压铁电陶瓷材料及其制备方法
WEI LINGLING (Autor:in) / HAO RUI (Autor:in) / YOU YANGFAN (Autor:in) / YANG ZUPEI (Autor:in)
04.01.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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