| 热压烧结ZrB2／B4C陶瓷材料的组织与性能 |
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| 引用本文： | 岳新艳,陈碧霜,茹红强,喻亮.热压烧结ZrB2／B4C陶瓷材料的组织与性能[J].世界科技研究与发展,2010,32(4):420-422. |
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| 作者姓名： | 岳新艳 陈碧霜 茹红强 喻亮 |
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| 作者单位： | 沈阳东北大学材料各向异性与织构教育部重点实验室,沈阳110819 |
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| 基金项目： | 国家教育部高等学校博士点基金，辽宁省自然科学基金，国家自然科学基金 |
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| 摘 要： | 以B4C、C、ZrO2为主要原料，采用反应热压法制备ZrB2／B4C陶瓷材料。通过对ZrB2／B4C陶瓷材料的显微组织及力学性能的综合分析，发现第二相ZrB2含量为20wt％时，材料具有较好的综合力学性能，相对密度为99．3％，维氏硬度为36．1GPa，抗弯强度为533．3MPa，断裂韧性为6．95MPa·m^1/2，比纯B4C陶瓷材料的性能均有所提高。材料为穿晶和沿晶断裂的混合断裂模式。
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| 关 键 词： | ZrB2／B4C 热压烧结 显微组织 力学性能 |
Microstructure and Mechanical Properties of Hot-Pressed ZrB2/B4C Ceramic Material |
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| YUE Xinyan,CHEN Bishuang,RU Hongqiang,YU Liang.Microstructure and Mechanical Properties of Hot-Pressed ZrB2/B4C Ceramic Material[J].World Sci-tech R & D,2010,32(4):420-422. |
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| Authors: | YUE Xinyan CHEN Bishuang RU Hongqiang YU Liang |
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| Institution: | (Key Laboratory for Anisotropy and Texture of Materials (MOE), Northeastern University, Shenyang 110819 ) |
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| Abstract: | Taking B4C,C and ZrO2 powders as raw materials, ZrB2/B4C ceramic material is prepared by hot pressing. Based on analyses of microstructure and mechanical properties, it＇s found in the experimental results that the ZrB2/B4 C ceramic material with 20 wt% ZrB2 has got the optimized properties,compared to pure B4 C. Its relative density, Vicker-hardness, bending strength and fracture toughness are 99.3% , 36. 1 GPa,533.3 MPa and 6.95 MPa · m^1/2 , respectively. And the ZrB2/B4C ceramic material indicates a inter/transgranular fracture mode. |
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| Keywords: | ZrB2 /B 4 C hot pressing microstrueture meehanieal properties |
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