| 引用本文: | 王思青,张长瑞,王圣威,等.Si3 N4基复相陶瓷天线罩材料的制备及性能.[J].国防科技大学学报,2006,28(2):44-47.[点击复制] |
| WANG Siqing,ZHANG Changrui,WANG Shenwei,et al.Preparation and Properties of Si3N4 Matrix Radome Ceramics[J].Journal of National University of Defense Technology,2006,28(2):44-47[点击复制] |
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| Si3 N4基复相陶瓷天线罩材料的制备及性能 |
| 王思青, 张长瑞, 王圣威, 齐共金, 曹峰, 胡海峰, 姜勇刚 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 基于高马赫数导弹天线罩为应用背景，以Si粉、BN粉、SiO2粉为主要原料，采用反应烧结法制备Si3N4基复相陶瓷材料，探讨了原料组成、成型工艺及坯体密度对材料性能的影响。试验结果表明：当原料中Si、BN和SiO2分别为55％、30％和10％时，材料强度可达96.7MPa，断裂韧性可达1.80MPa?m1/2。同时材料具有良好的介电性能及热物理性能。 |
| 关键词: 天线罩 反应烧结 氮化硅 氮化硼 石英 陶瓷 |
| DOI： |
| 投稿日期：2005-09-26 |
| 基金项目:国家部委资助项目；国防科技重点实验室基金资助项目 |
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| Preparation and Properties of Si3N4 Matrix Radome Ceramics |
| WANG Siqing, ZHANG Changrui, WANG Shenwei, QI Gongjin, CAO Feng, HU Haifeng, Jiang Yonggang |
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(College of Aerospace and Materials Engineering，National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| Si3N4matrix ceramics which would be applied to super-high Mach number missile radome was prepared via the reaction sintering process. Si, BN and SiO2 powder were the main raw materials. The effects of the raw materials and the model processing parameters and the compact density on properties of the material were investigated. The experimental results showed that the material has the best mechanical properties (σb, KICis 96.7MPa, 1.80MPa.m1/2, respectively) and better dielectric and thermal physic properties when the content (in raw mixture powder) of Si, BN, SiO2, is 55%, 30% and 10%, respectively. |
| Keywords: radome reaction binding sintering silicon nitride boron nitride quartz ceramics |
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