| 复合烧结助剂对 ZnNb2O6陶瓷的低温烧结与性能的影响 |
| |
| 引用本文： | 晏忠,黄金亮,顾永军,李谦.复合烧结助剂对 ZnNb2O6陶瓷的低温烧结与性能的影响[J].电子元件与材料,2013,32(3). |
| |
| 作者姓名： | 晏忠 黄金亮 顾永军 李谦 |
| |
| 作者单位： | 河南科技大学材料科学与工程学院,河南洛阳,471003 |
| |
| 基金项目： | 河南省教育厅自然科学研究计划资助项目，河南省科技发展计划资助项目，河南科技大学自然科学创新能力培育基金资助项目 |
| |
| 摘 要： | 采用传统固相反应法制备了 ZnNb2O6陶瓷，研究了复合添加 BaO-CuO-V2O5(BCV)烧结助剂对 ZnNb2O6陶瓷的烧结特性、物相组成、微观组织形貌及微波介电性能的影响。结果表明：掺杂少量 BCV 的 ZnNb2O6陶瓷物相组成并未改变，仍为 ZnNb2O6单相。添加质量分数 2%的 BCV 可使 ZnNb2O6陶瓷的烧结温度降至 950 ℃，并且在 950 ℃烧结 3 h 具有较佳的微波介电性能：εr=24.7，Q·f=75 248 GHz，τf= –50.4×10–6/℃。
|
| 关 键 词： | 铌酸锌陶瓷 复合烧结助剂 BaO-CuO-V2O5 微波介电性能 低温烧结 复合掺杂 |
Effects of composite sintering additives low temperature sintering and properties of ZnNb2O6 ceramics |
| |
| Abstract: | ZnNb2O6 ceramics were prepared by conventional solid-state reaction method.The effects of BaO-CuO-V2O5(BCV) complex additive on the sintering behavior,phase composition,micromorphology and microwave dielectric properties of ZnNb2O6 ceramics were investigated systematically.The results show that the crystal structure of BCV doped ZnNb2O6 samples are characterized as pure columbite structure ZnNb2O6 and no secondary phase can be detected by XRD.The sintering temperature of ZnNb2O6 ceramics is effectively lowered to 950 ℃ by adding 2%(mass fraction) BCV and the optimum microwave dielectric properties: εr=24.7,Q?f =75 248 GHz,τf = –50.4?10–6/℃ are obtained with 2% BCV doped ZnNb2O6 ceramics sintered at 950 ℃ for 3 h. |
| |
| Keywords: | ZnNb2O6 ceramic composite sintering aid BaO-CuO-V2O5 microwave dielectric property low temperature sintering composite doping |
| 本文献已被 万方数据 等数据库收录！ |
