摘要
采用化学镀法制备了Al2O3/Cu复合粉体,将复合粉体在160MPa的压力下保压5min压制,在1 000℃保温1h、N2保护烧结,得到体积分数为50%的Al2O3P/Cu复合材料。通过SEM对复合粉体的形貌和复合材料的断口进行观察,通过光学显微镜对复合材料组织进行观察,通过能谱仪对复合材料中颗粒和基体的界面进行成分分析,并对其密度和热膨胀系数进行测定,结果表明:复合材料中Al2O3颗粒分布均匀,与Cu基体结合良好;复合材料相对密度为88.6%,100～300℃的热膨胀系数在(8.7～14.3)×10-6/K之间。
Al2O3/Cu composite powders were prepared by chemical plating. The 50vo1% Al2O3/Cu composite can be obtained by means of compaction at 160 MPa pressure for 5 min and then sintefing at temperature of 100℃ for lb. The morphology of the composite powder and the fracture of the composite were analyzed by SEM. The microstructure of the composites was observed by OM. The element distribution in interface between powder and matrix was investigated by EDS. The density and the thermal expansion were measured. The result shows that Al2O3/Cu powders are well combined with Cu matrix and uniformly distribute in composites. The composite has relative density of 88.6% and the thermal expansion coefficient of （8.7-14.3） × 10^-6/K in 100-300℃.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2012年第5期348-352,362,共6页
Powder Metallurgy Technology
基金
内蒙古工业大学校基金资助项目(X200822)
