具有网络互穿结构TiC/AZ91D镁基复合材料的一种合成方法

功能材料, 2005, 2(z1): 58-63.

具有网络互穿结构TiC/AZ91D镁基复合材料的一种合成方法

陈礼清 ^1, , 董群 ^2, , 于宝海 ^3, , 马宗义 ^4,

1.中国科学院,金属研究所,辽宁,沈阳,110016

2.中国科学院,金属研究所,辽宁,沈阳,110016

3.中国科学院,金属研究所,辽宁,沈阳,110016

4.中国科学院,金属研究所,辽宁,沈阳,110016

基金项目: 辽宁省自然科学基金(20032012)

关键词：镁基复合材料 , TiC/AZ91D , 原位反应渗透法 , 互穿网络结构

A new route to synthesize TiC/AZ91D magnesium matrix composites with interpenetrating networks

介绍一种新的低成本合成具有网络互穿结构TiC/AZ91D镁基复合材料的方法--原位反应渗透法.该方法中,TiC陶瓷增强相由元素粉末Ti和C间原位反应直接合成,无需添加第三相金属粉末,仅在原位反应发生的同时熔融基体镁合金由毛细管力作用渗入(Tip+Cp)预制块内部构成致密的具有网络互穿结构的TiC/AZ91D镁基复合材料.实验结果和理论计算表明:(1)通过精确控制(Tip+Cp)预制块的致密度,考虑原位反应发生前后形成的TiC本征体积变化,即可获得具有不同TiC陶瓷含量的网络互穿结构镁基复合材料;(2)原位合成的TiC陶瓷是一可变化学剂量比的化合物,其晶格常数随反应条件而变化,主要取决于反应条件和原始元素粉末的尺寸.

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具有网络互穿结构TiC/AZ91D镁基复合材料的一种合成方法

A new route to synthesize TiC/AZ91D magnesium matrix composites with interpenetrating networks

参考文献