添加剂MnCO3和BazrO3对Ba(Zn1/3 Nb2/3)O3陶瓷烧结温度和介电性能的影响

添加剂MnCO₃和BazrO₃对Ba(Zn_1/3 Nb_2/3)O₃陶瓷烧结温度和介电性能的影响

摘要: 采用传统的固相烧结法制备Ba(Zn_1/3 Nb_2/3)O₃（BZN）和（1-x）Ba(Zn_1/3Nb_2/3)O₃-xSr(Zn_1/3Nb_2/3)O₃（BSZN）陶瓷,研究MnCO₃和BaZrO₃添加剂对其烧结温度和介电性能的影响。研究表明二者均是很好的助熔剂,在烧结过程中形成液相促进原子扩散从而降低烧结温度,本研究中的最佳烧结温度为1260℃（5#样品）。MnCO₃和BaZrO₃对于改善系统的介电性能均有较好的效果,合理调整添加剂的用量可以有效的改善介电性能。0.35BZN-0.65SZN-1%MnCO₃样品的介电性能最佳且烧结温度低于1300℃。

Abstract: The influence of MnCO₃ and BaZrO₃ additives on sintering temperature and dielectric properties of Ba(Zn_1/3Nb_2/3)O₃ ceramics,prepared by conventional solid sintering method is studied in this article. It shows that MnCO₃ and BaZrO₃ are excellent cosolvents which can form liquid phase during sintering and promote diffusion and crystallization,thus lower sintering temperature（Ts）.The best Ts of system is 1260℃for sample 5#.Dielectric properties of system can be bettered when appropriate MnCO₃ and Ba-ZrO₃ added.0.35BZN-0.65SZN-1%MnCO₃sample has the best dielectric properties with Ts lower than 1300℃.