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| BaTiO3基PTCR陶瓷材料的Sol-Gel制备方法的改进 | |
| 引用本文： | 李东升,吴淑荣,熊为淼,王文亮. BaTiO3基PTCR陶瓷材料的Sol-Gel制备方法的改进[J]. 应用化学, 2002, 19(10): 932-0 |
| 作者姓名： | 李东升 吴淑荣 熊为淼 王文亮 |
| 作者单位： | 延安大学，西北大学，陕西师范大学 |
| 基金项目： | 陕西省自然科学基金 (2 0 0 0 H16)，教育厅科研专项基金 (0 0 JK13 3 )，陕西省物理无机化学重点实验室基金资助项目 |
| 摘 要： | 正电阻-温度系数;溶胶-凝胶法;纳米粉体;BaTiO3基PTCR陶瓷材料的Sol-Gel制备方法的改进 |
| 关 键 词： | 正电阻-温度系数 溶胶-凝胶法 纳米粉体 BaTiO3基PTCR陶瓷材料的Sol-Gel制备方法的改进 |
| 文章编号： | 1000-0518(2002)10-0932-04 |
| 收稿时间： | 2009-06-29 |
| 修稿时间： | 2002-02-05 |
An Improved Sol-Gel Method for Preparation of BaTiO3-based PTCR Ceramic Materials |
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| LI Dong Sheng a,b ,WU Shu Rong b,XIONG Wei Miao b,WANG Wen Liang c. An Improved Sol-Gel Method for Preparation of BaTiO3-based PTCR Ceramic Materials[J]. Chinese Journal of Applied Chemistry, 2002, 19(10): 932-0 | |
| Authors: | LI Dong Sheng a b WU Shu Rong b XIONG Wei Miao b WANG Wen Liang c |
| Affiliation: | LI Dong Sheng a,b *,WU Shu Rong b,XIONG Wei Miao b,WANG Wen Liang c |
| Abstract: | The BaTiO 3 based PTCR(Positive Temperature Coefficient Resistant) nanopowder was prepared by a modified sol gel process. XRD, DSC, SEM and BET techniques were used to investigate the characteristics of the nanopowder and their effects on the properties ceramics thereof. The results showed that the sphere shaped nanopowder of narrow size distribution has an average crysta llite size of 30~40 nm with specific surface area 26 20 m 2/g. Its crystal structure is cubic perovskite phase at room temperature. The nanopowder was pressed into pellets and sintered by an improved technique to fabricate PTCR ceramic materials with much better electrical properties than that reported in the previous paper. |
| Keywords: | BaTiO 3 positive temperature coefficient resistant sol gel process nanopowder ceramic material |
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