摘要
通过XRD、DTA、SEM等测试技术,系统研究了Zn(1-x)(Mg1/2Co1/2)xTiO3(x=0.1～0.4)陶瓷六方钛铁矿结构的热稳定性和显微结构,应用传统固相烧结法制备了Zn(1-x)(Mg1/2Co1/2)xTiO3(x=0.1～0.4)陶瓷。研究表明:由于ZnTiO3、MgTiO3和CoTiO3有类似的六方钛铁矿结构,Mg2+和Co2+都能取代ZnTiO3相中部分Zn2+离子,且能形成热稳定性较强的(Zn,Mg,Co)TiO3固溶体;当取代量x=0.1时,使六方钛铁矿相的热稳定温度提高了约70℃,拓宽了六方钛铁矿相的热稳定温度范围,能够制备出优良微波介电性能且烧结温度范围较宽微波介质材料。
The thermal stability of hexagonal ilmenite-type zinc metatitanate and the microstructure of Zn（1-x）（Mg1/2Co1/2）xTiO3（x=0.1-0.4） were synthesized investigated, XRD.DTA.SEM were used to characterize the samples, （Zn（1-x）（Mg1/2Co1/2）xTiO3（x=0.1-0.4） ceramics were successfully synthesized by a conventional solid state reaction technique. Studies results showed that ZnTiO3, MgTiO3 and CoTiO3 are ilmenite-type, and belong to hexagonal syngony, both Mg^2＋ and Co^2＋ can substitute for Zn^2＋ of the ZnTiO3 phase easily, Zn^2＋ were replaced partially by Mg^2＋ and Co^2＋ in the ZnTiO3 to form （Zn.Mg.Co）TiO3, this phase was better stabilized than the ZnTiO3 phase, As x=0.1, The thermal stability of hexagonal ilmenite-type was improved about 70℃. The microwave dielectric ceramics with optimized microwave dielectric properties and the extensive range of sintering temperature were produced.
出处
《江苏陶瓷》
CAS
2007年第5期7-9,13,共4页
Jiangsu Ceramics
关键词
微波介电陶瓷
偏钛酸锌
热稳定性
掺杂
microwave dielectric ceramics, zinc metatitanate, thermostability, doping
