| Al2O3短纤维Al—1／5wt%Mg复合材料的界面研究 |
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| 引用本文： | 胡连喜,罗守靖.Al2O3短纤维Al—1／5wt%Mg复合材料的界面研究[J].理化检验(物理分册),1996,32(1):25-27. |
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| 作者姓名： | 胡连喜 罗守靖 |
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| 作者单位： | 哈尔滨工业大学!150001 |
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| 基金项目： | 本研究得到国家自然科学基金资助 |
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| 摘 要： | 实验研究了液态浸渗后直接挤压工艺制备的Ａｌ２Ｏ３短纤维／Ａｌ－１．５ｗｔ％Ｍｇ复合材料的界面特点。发现；基体中的Ｍｇ在纤维／基体界面处偏聚，发生了界面反应；反应产物ＭｇＡｌ２Ｏ４，其厚度约为２０ｎｍ，远小于由Ｍｅｔｃａｌｆｅ定义的界面反应层第一临界厚度；界面反应产生ＭｇＡｌ２Ｏ４的存在，为其体与纤维间提供了较好的结合强度。
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| 关 键 词： | 短纤维 复合材料 界面 铝氧化物 镁 |
INVESTIGATION OF THE INTERFACE OF A SHORT FIBER REINFORCED ALUMINA/Al-1. 5WT% Mg COMPOSITE |
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| Hu Lianxi,Luo Shoujing,Huo Wencan.INVESTIGATION OF THE INTERFACE OF A SHORT FIBER REINFORCED ALUMINA/Al-1. 5WT% Mg COMPOSITE[J].Physical Testing and Chemical Analysis Part A:Physical Testing,1996,32(1):25-27. |
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| Authors: | Hu Lianxi Luo Shoujing Huo Wencan |
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| Affiliation: | Harbin Institute of Technology |
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| Abstract: | The interfacial characteristics of a short fiber reinforced alumina/Al-1. 5wt% Mg composite manufactured by the technology of extrusion directly following liquid infiltration was experimentally investigated. The magnesium in the matrix was found to segregate near the fiber/matrix interface and to react with the fiber,resulting in a new interfacial phase identified as MgAl2O4. The thickness of the interfacial reaction resultant MgAl2O4 phase was estimated at about 20nm,which is far less than the value of its first critical thickness defined by Metcalfe. It seemed that the presence of the interfacial MgAl2O4 phase improved the interfacial bond strength between the matrix and the fiber. |
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| Keywords: | Alumina fiber Al-1 5wt%Mg alloy Composite Interface |
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