ZrC陶瓷有机前驱体热处理过程中微结构和电磁屏蔽性能的演变

贾泽李; 范晓孟; 何江怡; 薛继梅; 叶昉; 成来飞

doi:10.1007/s12613-023-2619-4

Volume 30 Issue 7

Jul. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 2023 > 30(7): 1398-1406

Zeli Jia, Xiaomeng Fan, Jiangyi He, Jimei Xue, Fang Ye, and Laifei Cheng, Evolution of microstructure and electromagnetic interference shielding performance during the ZrC precursor thermal decomposition process, Int. J. Miner. Metall. Mater., 30(2023), No. 7, pp. 1398-1406. https://doi.org/10.1007/s12613-023-2619-4

Cite this article as:

Zeli Jia, Xiaomeng Fan, Jiangyi He, Jimei Xue, Fang Ye, and Laifei Cheng, Evolution of microstructure and electromagnetic interference shielding performance during the ZrC precursor thermal decomposition process, Int. J. Miner. Metall. Mater., 30(2023), No. 7, pp. 1398-1406. https://doi.org/10.1007/s12613-023-2619-4

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研究论文

ZrC陶瓷有机前驱体热处理过程中微结构和电磁屏蔽性能的演变

1)
西北工业大学超高温结构复合材料重点实验室，西安 710072，中国
2)
西安鑫垚陶瓷基复合材料有限公司，西安 710117，中国

通讯作者:
范晓孟 E-mail: fanxiaomeng@nwpu.edu.cn

文章亮点

(1) 系统地研究了热处理温度对聚合物转化ZrC陶瓷相组成、微结构和电磁屏蔽性能的影响

(2) 阐述了ZrC超高温陶瓷优异电磁屏蔽性能的机理

(3) 总结了相组成和微结构对聚合物转化ZrC陶瓷屏蔽性能的影响规律

中文摘要

本工作研究了一种具有优异电磁屏蔽性能的聚合物转化ZrC陶瓷，以满足超高温要求。揭示了不同热处理温度下聚锆氧烷转化陶瓷的相组成、微结构和电磁屏蔽性能之间的关系。碳热还原反应在1300℃开始发生，在1700℃完成ZrO₂到ZrC的转变。随着热处理温度的升高，大量碳相消耗，四方氧化锆逐渐转变为单斜氧化锆，在1500℃完成转变。PDC-ZrC陶瓷在900、1100、1300、1500和1700°C热处理的总平均屏蔽效能分别为11.63、22.67、22.91、22.81和34.73 dB。在热处理过程中，自由碳的石墨化程度和分布对材料的屏蔽性能起主导作用。在1700℃热处理的样品由C和ZrC形成典型的核壳结构，从而具有优异的电磁屏蔽性能。

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Research Article

Evolution of microstructure and electromagnetic interference shielding performance during the ZrC precursor thermal decomposition process

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Abstract

Abstract

A polymer-derived ZrC ceramic with excellent electromagnetic interference (EMI) shielding performance was developed to meet ultra-high temperature requirements. The thermal decomposition process of ZrC organic precursor was studied to reveal the evolution of phase composition, microstructure, and EMI shielding performance. Furthermore, the carbothermal reduction reaction occurred at 1300°C, and the transition from ZrO₂ to ZrC was completed at 1700°C. With the increase in the annealing temperature, the tetragonal zirconia gradually transformed into monoclinic zirconia, and the transition was completed at the annealing temperature of 1500°C due to the consumption of a large amount of the carbon phase. The average total shielding effectiveness values were 11.63, 22.67, 22.91, 22.81, and 34.73 dB when the polymer-derived ZrC was annealed at 900, 1100, 1300, 1500, and 1700°C, respectively. During the thermal decomposition process, the graphitization degree and phase distribution of free carbon played a dominant role in the shielding performance. The typical core–shell structure composed of carbon and ZrC can be formed at the annealing temperature of 1700°C, which results in excellent shielding performance.
- ZrC ceramics;
- polymer-derived ceramic;
- phase composition;
- electromagnetic interference shielding

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