摘要
采用内氧化法制备了Cu/Cr2O3弥散强化铜基复合材料,并利用SEM、TEM等分析手段对其性能和微观结构进行了分析。实验结果表明：随着内氧化时间和温度的增加,内氧化层深逐渐增大;随变形量的增加,试样硬度和抗拉强度逐渐升高,导电率略有降低;微观组织分析表明,在铜基体上弥散分布着大量细小均匀的Cr2O3颗粒,其粒径为5-20nm,颗粒间距为20-50nm。
Cu/Cr2O3 composite was prepared by internal oxidation.The properties and microstructure of the composite were investigates by means of SEM and TEM.The results indicate that internal oxidation depth of the composite increases gradually with increase of internal oxidation time and temperature.The microhardness and the tensile strength of the composite increase with increasing deformation while the electrical conductivity drops slightly. The investigation of microstructure of the internal oxidation composite shows that a mass of fine Cr2O3 particles is dispersed in the copper matrix,the size of Cr2O3 particles is 5～20nm in diameter and the spatial distance between these particles is 20～50nm.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2008年第5期22-25,共4页
Transactions of Materials and Heat Treatment
基金
河南省教育厅自然科学基金项目(2006430004)
河南科技大学基金项目(2007ZY060)
河南科技大学博士研究启动基金
关键词
Cr2O3弥散铜
内氧化
显微硬度
导电率
抗拉强度
Cr2O3 dispersion strengthened copper,internal oxidation,microhardness,electrical conductivity,tensile strength
