| Al2O3-WO3二元系线性热敏材料研究 |
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| 引用本文： | 白铁城,曾祥斌.Al2O3-WO3二元系线性热敏材料研究[J].华中科技大学学报(自然科学版),1999,27(5). |
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| 作者姓名： | 白铁城 曾祥斌 |
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| 作者单位： | 华中理工大学电子科学与技术系 |
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| 摘 要： | 利用激光烧结工艺合成了Ａｌ２Ｏ３－ＷＯ３系列ＮＴＣ热敏陶瓷材料．研究发现，这种陶瓷材料在一定的组分范围和工艺条件下，在较宽的温区内，其阻温特性呈现良好的线性关系．Ｘ－ｒａｙ衍射分析表明，经激光烧结的ＮＴＣ热敏材料中含有Ａｌ２Ｏ３，Ａｌ２（ＷＯ４）３和ＡｌｘＷＯ３相，且此材料中的导电相为钨青铜结构的ＡｌｘＷＯ３．ＡｌｘＷＯ３相是在Ａｌ２Ｏ３－ＷＯ３二元系平衡相图中所没有的．
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| 关 键 词： | 热敏材料 激光烧结 非平衡态 |
Investigation on Linear Thermosensitive Materials of Al2O3-WO3 System |
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| Bai Tiecheng,Zeng Xiangbin.Investigation on Linear Thermosensitive Materials of Al2O3-WO3 System[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1999,27(5). |
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| Authors: | Bai Tiecheng Zeng Xiangbin |
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| Abstract: | Ceramic materials of Al 2O 3 WO 3 system were synthesized by laser sintering technology. The
experiments showed that the linearity resistance in some samples decreased with increasing
temperature in a wide temperature rang. The X ray diffraction indicated that Al 2O 3,Al 2 (WO 4)
3 and Al x WO 3 phases exist in the materials by laser sintering. The conducting phase is Al
x WO 3 tungsten bronze that does not exist in Al 2O 3 WO 3 equilibrium phase diagram. |
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| Keywords: | NTC |
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