| 复合氧化物材料的负热膨胀机理 |
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| 引用本文： | 谭强强,方克明. 复合氧化物材料的负热膨胀机理[J]. 耐火材料, 2001, 35(5): 296-298 |
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| 作者姓名： | 谭强强 方克明 |
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| 作者单位： | 北京科技大学物理化学系, |
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| 摘 要： | 介绍了相转变、桥氧原子的横向热振动、刚性多面体的旋转耦合、固体内压转变、相界面弯曲、阳离子迁移等六种模式的负热膨胀机理。并对其应用前景和发展趋势进行了预测
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| 关 键 词： | 复合氧化物 负热膨胀 负热膨胀机理 |
| 修稿时间： | 2000-12-11 |
Mechanism of negative thermal expansion in complex oxides materials |
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| Tan Qiangqiang,Fang Keming. Mechanism of negative thermal expansion in complex oxides materials[J]. Refractories, 2001, 35(5): 296-298 |
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| Authors: | Tan Qiangqiang Fang Keming |
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| Affiliation: | Tan Qiangqiang,Fang KemingDepartment of Physical-Chemistry,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | New negative thermal expansion materials in complex oxides include the series of tungstate, vanadate,phosphate and molybates,etc.The mechanisms of negative thermal expansion were discussed with six modes:phase transitions,transvers thermal vibrations of bridge atoms,coupled rotation of rigid polyhedra unit,internal pressure changes in solids,bending of bimaterial interfaces,migration of cations.The prospects of potential applications and developing trend of the material are propounded. |
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| Keywords: | Complex oxides Negative thermal expansion Negative thermal expansion mechanism |
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