Cu-Gd2O3复合材料界面与性能研究

Cu-Gd2O3 Composites Interface Reaction and its Properties

摘要:

采用放电等离子烧结工艺制备Cu-Gd2O3复合材料，主要研究该复合材料内部Cu/Gd2O3界面结合情况及物理性能。增强相Gd2O3在复合材料中弥散分布，随含量增多在基体中呈现出立体网格状分布结构。X射线衍射分析有少量新相Gd2CuO4形成，透射电镜分析发现Gd2O3和铜基体发生部分界面反应形成Gd2CuO4，且过渡区反应层的厚度随温度的增加而加厚，通过有效控制界面反应层的厚度可以提高材料的力学性能。

Abstract:

Cu-Gd2O3 composites were prepared by the spark plasma sintering apparatus, and the research was mainly focused on physical properties and the interface reaction layer in the composites. The Gd2O3 powder distributed in the composite dispersively, and with the increase of the amount of Gd2O3 a three-dimensional grid structure formed in the matrix. New phase Gd2CuO4 was detected by XRD analysis, and the interface reaction between Gd2O3 and Cu matrix during sintering process was observed by TEM. The thickness of reaction layer and transition zone became broaden with the increase of the temperature. It was an effectively way to improve the mechanical properties of materials by the control of the thickness of reaction layer.