常压水热法制备BTZ粉体及其在Y5V瓷粉中的应用
|
摘要
采用常压水热法制备锆钛酸钡粉体,研究了工艺参数对锆钛酸钡粉体颗粒大小的影响,以及粉体颗粒、Ba/(Ti+Zr)摩尔比对制成的Y5V瓷粉介电性能的影响。结果表明:选择改进的加料方式,再通过洗涤控制,可以得到粒度(D50)在0.4~0.5μm、Ba/(Ti+Zr)摩尔比为1.0的粉体;其能与抗还原剂、助熔剂很好匹配,获得性能优良(εr≥15000,tanδ<30×10–4,–80%≤?C/C20≤+30%)的镍内电极MLCC用Y5V瓷料。
BTZ powders were prepared by hydrothermal method under normal pressure. The influence of process parameters on the particle size of BTZ powders, and the effect of particle size of BTZ on dielectric properties of fabricated Y5 V ceramics with BTZ as the main component were studied. Results show that by utilizing improved feeding way combined with washing control, BTZ powders with a granularity(D50) of 0.4–0.5μm and a molar ratio of Ba/(Ti+Zr) of 1.0 can be obtained. The obtained BTZ can match pretty well with anti-reducers and fluxes, thus a Y5 V ceramic with excellent properties(εr≥15 000,tanδ<30×10–4,–80%≤?C/C20≤+30%) employed in Ni-MLCC is achieved.
BTZ powders were prepared by hydrothermal method under normal pressure. The influence of process parameters on the particle size of BTZ powders, and the effect of particle size of BTZ on dielectric properties of fabricated Y5 V ceramics with BTZ as the main component were studied. Results show that by utilizing improved feeding way combined with washing control, BTZ powders with a granularity(D50) of 0.4–0.5μm and a molar ratio of Ba/(Ti+Zr) of 1.0 can be obtained. The obtained BTZ can match pretty well with anti-reducers and fluxes, thus a Y5 V ceramic with excellent properties(εr≥15 000,tanδ<30×10–4,–80%≤?C/C20≤+30%) employed in Ni-MLCC is achieved.
引文
[1]梁力平,赖永雄,李基森.片式叠层陶瓷电容器的制造与材料[M].广州:暨南大学出版社,2008:2-3.
[2]赵中友,黄敏,杨锋,等.锆钛酸钡粉体的常压水热制备方法:中国,101104562[P].2008-01-16.
[3]戴瑞斌,王承珍,张兵,等.制备纳米级高纯锆钛酸钡粉体的工艺:中国,1472170A[P],2004-12-04.
[4]邹晨,金向朝,鲍婕,等.水热法制备四方相钛酸钡纳米粉末的工艺研究[J].绝缘材料,2004(2):25-27.
[5]翟学良.水热法制备四方相Ba Ti O3及其晶相转化机理[J].硅酸盐学报,2000,28(4):227-231.
[6]李汶军,施尔畏.水热法制备Ba Ti O3粉体[J].硅酸盐学报,1999,27(6):715-718.
[7]丁士文,翟永青,王静,等.Ba1–xCaxZryTi1–yO3纳米材料的合成、结构与性能[J].河北大学学报,2000,20(3):256-258.
[8]王森,张跃,周成,等.MLCC用高介电常数陶瓷介质材料的研究现状与发展趋势[J].材料与冶金学报,2003,2(3):227-231.
[9]金翰均,赵成源,马圣云,等.介电陶瓷组合物、利用该组合物的陶瓷电容器及其制造方法:中国,01116169.8[P].2002-01-23.
[2]赵中友,黄敏,杨锋,等.锆钛酸钡粉体的常压水热制备方法:中国,101104562[P].2008-01-16.
[3]戴瑞斌,王承珍,张兵,等.制备纳米级高纯锆钛酸钡粉体的工艺:中国,1472170A[P],2004-12-04.
[4]邹晨,金向朝,鲍婕,等.水热法制备四方相钛酸钡纳米粉末的工艺研究[J].绝缘材料,2004(2):25-27.
[5]翟学良.水热法制备四方相Ba Ti O3及其晶相转化机理[J].硅酸盐学报,2000,28(4):227-231.
[6]李汶军,施尔畏.水热法制备Ba Ti O3粉体[J].硅酸盐学报,1999,27(6):715-718.
[7]丁士文,翟永青,王静,等.Ba1–xCaxZryTi1–yO3纳米材料的合成、结构与性能[J].河北大学学报,2000,20(3):256-258.
[8]王森,张跃,周成,等.MLCC用高介电常数陶瓷介质材料的研究现状与发展趋势[J].材料与冶金学报,2003,2(3):227-231.
[9]金翰均,赵成源,马圣云,等.介电陶瓷组合物、利用该组合物的陶瓷电容器及其制造方法:中国,01116169.8[P].2002-01-23.