| 纳米ZrO2晶型对铜基复合材料界面的影响 |
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| 引用本文： | 丁俭,赵乃勤,师春生,李家俊.纳米ZrO2晶型对铜基复合材料界面的影响[J].北京科技大学学报,2007,29(2):119-124. |
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| 作者姓名： | 丁俭 赵乃勤 师春生 李家俊 |
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| 作者单位： | 天津大学材料科学与工程学院,天津,300072 |
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| 基金项目： | 天津市应用基础研究项目 |
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| 摘 要： | 采用原位化学工艺制备了ZrO2/Cu纳米复合粉末,用粉末冶金法制备了纳米ZrO2/Cu复合材料. 通过TEM观察发现,氧化锆呈单斜和四方两种晶型,不同晶体形态的氧化锆颗粒与铜基体之间具有不同的界面特征. 通过Ansys分析软件对不同形态即不同晶型氧化锆与铜基体的界面进行应力模拟分析,结果发现单斜晶型氧化锆的尖端部位很容易产生应力集中,且比四方晶型氧化锆界面处更容易产生裂纹.
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| 关 键 词： | 铜基复合材料 纳米氧化锆 原位 界面 纳米复合粉末 不同晶型 铜基体 材料界面 影响 interface composite matrix copper crystal structure nano 裂纹 应力集 结果 模拟分析 晶体形态 分析软件 Ansys 界面特征 颗粒 |
| 修稿时间： | 2006-09-12 |
Effect of nano ZrO2 crystal structure on copper matrix composite interface |
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| DING Jian,ZHAO Naiqin,SHI Chunsheng,LI Jiajun.Effect of nano ZrO2 crystal structure on copper matrix composite interface[J].Journal of University of Science and Technology Beijing,2007,29(2):119-124. |
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| Authors: | DING Jian ZHAO Naiqin SHI Chunsheng LI Jiajun |
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| Institution: | School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | ZrO_2/Cu composite powder was prepared by in-situ chemical route, with which a nano ZrO_2/Cu composite material was prepared by powder metallurgy. TEM observation reveals that there are two crystal types of tetragonal and monoclinic Zirconia particles, and different interfacial characterizations exist between the different zirconia particles and copper matrix. With Ansys software, interfacial stress was simulated in zirconia with different crystal structures and copper matrix. The results show that the stress is easily concentrated in the tip of monoclinic Zirconia particles and cracks are easily brought than the tetragonal zirconia interface. |
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| Keywords: | copper matrix composite nano-sized zirconia particles in situ interface |
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