| 放电等离子烧结Ti/(1-x)Ti_3SiC_2+xSiC层状材料的显微结构 |
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| 引用本文： | 郑军君,倪东惠,谭文昌,谢珩,李元元. 放电等离子烧结Ti/(1-x)Ti_3SiC_2+xSiC层状材料的显微结构[J]. 粉末冶金材料科学与工程, 2010, 15(5) |
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| 作者姓名： | 郑军君 倪东惠 谭文昌 谢珩 李元元 |
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| 作者单位： | 华南理工大学,国家金属材料近净成形工程技术研究中心,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(5070560); 广东省自然科学基金资助项目(8151064101000029); 国家重点基础研究计划(973计划)专项课题(2007CB616905) |
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| 摘 要： | 以钛粉,硅粉和石墨粉为原料,采用放电等离子烧结技术制备密度为4.14 g/cm3的Ti3SiC2和密度为4.03 g/cm3的0.8 Ti3SiC2+0.2 SiC复合材料,并以此为基础制备Ti/Ti3SiC2/0.8Ti3SiC2+0.2SiC层状材料。通过扫描电镜(SEM)和X射线衍射仪(XRD)分析材料的显微结构与相组成。结果表明:该层状材料的界面结合紧密,没有明显的孔洞、裂纹等缺陷,各层的相组成符合设计要求。经800℃热处理40 h后Ti/Ti3SiC2界面处生成稳定的TiC层,在高温下该层状材料的界面基本稳定。
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| 关 键 词： | 层状材料 Ti3SiC2 SiC 放电等离子烧结 热稳定性 |
Microstructure of Ti/(1-x)Ti_3SiC_2+xSiC layered composite sintered by spark plasma |
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| ZHENG Jun-jun,NGAI Tungwai,TAN Wen-chang,XIE Heng,LI Yuan-yuan. Microstructure of Ti/(1-x)Ti_3SiC_2+xSiC layered composite sintered by spark plasma[J]. materials science and engineering of powder metallurgy, 2010, 15(5) |
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| Authors: | ZHENG Jun-jun NGAI Tungwai TAN Wen-chang XIE Heng LI Yuan-yuan |
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| Affiliation: | ZHENG Jun-jun,NGAI Tungwai,TAN Wen-chang,XIE Heng,LI Yuan-yuan(National Engineering Research Center of Near-net-shape Forming Technology for Metallic Materials,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | Ti3SiC2 with a density of 4.14 g/cm3 and composite of 0.8Ti3SiC2+0.2SiC with a density of 4.03 g/cm3 were prepared using Ti,Si,and graphite powders as raw materials.On this basis,layered composite of Ti/Ti3SiC2/0.8Ti3SiC2+ 0.2SiC was prepared by spark plasma sintering.Microstructure and phase composition of the layered composite were analysed by scanning electron microscope and X-ray,respectively.Results show that interfaces of the layered composite are tight and clean,no obvious pore and crack can be obser... |
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| Keywords: | layered composite Ti3SiC2 SiC spark plasma sintering thermal stability |
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