铜业工程Issue(1)：22-28,7.DOI:10.3969/j.issn.1009-3842.2024.01.002
La2O3掺杂Ti3SiC2/Cu复合材料的制备与性能
Preparation and Properties of La2O3-Doped Ti3SiC2/Cu Composites
摘要
Abstract
Co structural failure of copper alloy under the condition of cold-heat cycle occurred when it was applied as thermal manage-ment material for a long time.Therefore,it was considered to introduce MAX phase material with low expansion coefficient into the cop-per alloy to reduce the thermal expansion of the composites.Ti3SiC2 was a three-layer ceramic material with excellent properties of both ceramic and metal,which had the characteristics of self-lubrication,high toughness and high electrical conductivity.As a reinforcing phase,Ti3SiC2 can improve the friction properties of Cu-based composites,then it reduced the thermal expansion coefficient of the com-posite material,so Ti3SiC2/Cu composites should be widely used in electronic packaging materials,thermal management materials and other fields.In this paper,rare earth oxide La2O3 was introduced into Ti3SiC2/Cu composite to survey the effects of La2O3 doping content on the phase composition,surface morphology,microhardness and friction factor of Ti3SiC2/Cu composites.It was found that the high density Ti3SiC2/Cu composites can be obtained by hot pressing sintering technology,then the relative density was more than 98.5%.Af-ter proper La2O3 doping,the microhardness of Ti3SiC2/Cu composites was increased,which can realize the dispersion strengthening of Ti3SiC2/Cu composites.With the increase of La2O3 doping,the friction coefficient of Ti3SiC2/Cu composites decreased first and then in-creased.Adding Ti3SiC2 to Cu matrix composites can play a lubricating role and was conducive to reducing friction factor.This research can provide experimental basis for the engineering application of Ti3SiC2/Cu composites.关键词
Ti3SiC2/Cu复合材料/耐磨性/显微硬度Key words
Ti3SiC2/Cu composites/wear resistance/microhardness分类
金属材料引用本文复制引用
伊洪勇,陈忠文,王俊青,张云龙,李成海,张瑞霞,潘佳琦,李文博,贾辰凡..La2O3掺杂Ti3SiC2/Cu复合材料的制备与性能[J].铜业工程,2024,(1):22-28,7.基金项目
黑龙江省教育厅基础科研业务费项目(2019-KYYWF-1373)资助 （2019-KYYWF-1373）
