| Y和YF3掺杂钛酸钡系PTCR材料的结构及性能 |
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| 引用本文： | 黄传勇,唐子龙,张中太.Y和YF3掺杂钛酸钡系PTCR材料的结构及性能[J].无机材料学报,2000,15(4):691-696. |
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| 作者姓名： | 黄传勇 唐子龙 张中太 |
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| 作者单位： | 黄传勇（清华大学材料科学与工程系，北京
100084）;唐子龙（清华大学材料科学与工程系，北京 100084） |
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| 摘 要： | 在不同烧结气氛下制备了Ｙ和掺杂钛酸钡材料，借助于ＸＲＤ、ＳＥＭ、ＸＲＦ和阻温测试分析仪，研究了烧结气氛对Ｙ和ＹＦ３掺杂钛杂钛钡材料结构和性能的影响，研究结果表明，你舂压气氛可促进Ｙ和ＹＦ３掺杂钛酸钡材料的烧结，晶粒长大，而且这二种掺杂钛酸钡材料都是ｎ型半导体，经过氩气氛烧结的Ｙ掺杂钛酸钡材料ＰＴＣＲ效应较弱，而对在氩气氛中烧结的０．３ｍｏｌ％ＹＦ３掺杂钛酸钡材料却观察到了较好的ＰＴＣＲ效应，这种效
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| 关 键 词： | 钛酸钡 PTCR效应 烧结 结构 铁电陶瓷 掺杂 钇 |
| 文章编号： | 1000-324X(2000)04-0691-06 |
| 收稿时间： | 1999-8-9 |
| 修稿时间： | 1999年8月9日 |
Structure and Property of Y and YF3 Doped Barium Titanate |
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| HUANG Chuan-Yong,TANG Zi-Long,ZHANG Zhong-Tai.Structure and Property of Y and YF3 Doped Barium Titanate[J].Journal of Inorganic Materials,2000,15(4):691-696. |
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| Authors: | HUANG Chuan-Yong TANG Zi-Long ZHANG Zhong-Tai |
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| Affiliation: | DepartmentofMaterialsScienceandEngineering;TsinghuaUniversity;Beijing100084;China |
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| Abstract: | Positive Temperature Coefficient of Resistivity (PTCR) materials based on Yttrium and Yttrium Fluoride (YF3) doped Barium titanate (BaTiO3) ceramics were prepared in different sintering atmospheres, respectively. The effects of sintering atmospheres on the microstructure, property and mechanism of substitution of doped BaTiO3 ceramics were investigated by the means of XRD, SEM, XRF and R-T measuring instrument. Sintering in a low oxygen partial atmosphere can increase the densities of Y and YF3 doped BaTiO3 and make grain particle grow. Both Y and YF3 doped BaTiO3 ceramics are n-type semiconductor in which Y substitutes A-site and F substitutes O-site. Sintered in a argon atmosphere, Y doped BaTiO3 exhibited little PTCR effect, however, an anomalous PTCR effect was observed when 0.3mol% YF3doped BaTiO3 ceramics was fired in Argon atmosphere. This phenomenon may be explained by a new O site substitution mechanism. |
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| Keywords: | barium titanate PTCR effect sintering atmosphere substitution |
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