| Al_2O_3-TiC复合材料放电等离子烧结(SPS)致密化研究 |
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| 引用本文： | 蔡雁兵,王志宏,张国珍,聂祚仁.Al_2O_3-TiC复合材料放电等离子烧结(SPS)致密化研究[J].北京工业大学学报,2003,29(1):112-115. |
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| 作者姓名： | 蔡雁兵 王志宏 张国珍 聂祚仁 |
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| 作者单位： | 北京工业大学,材料科学与工程学院新型功能材料教育部重点实验室,北京,100022 |
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| 摘 要： | 用燃烧合成及放电等离子烧结法制备出致密Al_2O_3-TiC复合材料;分析了烧结温度与材料致密度、显微结构及力学性能的关系;真空气氛、1650℃、保温5min烧结试样的相对密度达99.8％,断裂韧性为4.61 MPa·m~(1/2);更高温度下烧结,气相反应加剧,不利于致密度进一步提高,力学性能也有所下降。沿晶断裂是其主要断裂方式。
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| 关 键 词： | Al_2O_3-TiC 复合材料 致密化 放电等离子烧结(SPS) |
| 文章编号： | 0254-0037(2003)01-0112-04 |
| 修稿时间： | 2002年9月5日 |
Research on the Densification of Al2O3-TiC Composites by Spark Plasma Sintering (SPS) |
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| CAI Yan-bing,WANG Zhi-hong,ZHANG Guo-zhen,NIE Zuo-ren.Research on the Densification of Al2O3-TiC Composites by Spark Plasma Sintering (SPS)[J].Journal of Beijing Polytechnic University,2003,29(1):112-115. |
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| Authors: | CAI Yan-bing WANG Zhi-hong ZHANG Guo-zhen NIE Zuo-ren |
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| Abstract: | Dense Al2O3 TiC composites was prepared by means of combustion synthesizing and spark plasma sintering. The relation between the density, mechanical properties and sintering temperature were investigated. The results show that A12O3 TiC composites with toughness of 4.61 MPa·m 1/2 and relative density of 99.8% can be prepared under the following sintering conditions: sintering temperature 1 650 ℃/min; soaking time 5 minutes. Sintering at temperature higher than 1 650 ℃ is adverse to the further densification of Al2O3 TiC composites because of the accelerating of the gas releasing reaction between Al2O3 and TiC. The fracture mode of the Al2O3-TiC composites is mainly intracrystalline fracture. |
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| Keywords: | Al2O3-TiC composites densii'icalion spark plasma sintering (SPS) |
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