| 颗粒弥散复合材料等效导热系数的估算 |
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| 引用本文： | 李明伟,朱景川,尹钟大.颗粒弥散复合材料等效导热系数的估算[J].功能材料,2001,32(4):397-398. |
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| 作者姓名： | 李明伟 朱景川 尹钟大 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院, |
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| 摘 要： | 等效热导率是热障功能梯度材料的重要热物理性能，本文采用小最小热阻力法则和比等效导热系数相等法则，推导出了热障型陶瓷／金属复赤道儿热导系数的普通式。并研究了Ni-ZrO2系复合材料的等效热导率随成分变化的规律，将理论值和实测值进行了比较。结果表明该理论对热障功能梯度材料的设计具有指导意义。
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| 关 键 词： | 等效热导率 陶瓷／金属 功能梯度材料 复合材料 |
| 文章编号： | 1001-9731(2001)04-0397-02 |
| 修稿时间： | 2000年3月28日 |
Analysis of effective thermal conductivity of particle dispersive composites |
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| LI Ming wei,ZHU Jing chuan,YIN Zhong da.Analysis of effective thermal conductivity of particle dispersive composites[J].Journal of Functional Materials,2001,32(4):397-398. |
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| Authors: | LI Ming wei ZHU Jing chuan YIN Zhong da |
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| Abstract: | Effective thermal conductivity is a very important thermophysical property of thermal barrier ceramic/metal functionally gradient materials. Based upon the minimum thermal resistance law and the law of ratio effective thermal conductivity, the formulae that could be applied to calculate the effective thermal conductivity of thermal barrier ceramic/metal composites are presented. Effective conductivities of Ni ZrO 2 composites with different volume fractions of Ni are calculated. Measured values are compared with calculated values. The results show that these formulae can be used to guide the design of thermal barrier ceramic/metal functionally gradient materials. |
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| Keywords: | effective thermal conductivity ceramic/metal functionally gradient materials |
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