纳米Al/Al_2O_3复合材料中Al_2O_3膜的碎化对性能的影响  

EFFECT OF RUPTURE OF AMORPHOUS Al_2O_3LAYER IN Al/Al_2O_3 NANO-COMPOSITEON MECHANICAL PROPERTIES

作　　者：杨志卿[1] 贺连龙[1] 胡魁义[1] 陈 吉[1] 范学书[1] 丛洪涛[1] 叶恒强[1] 

机构地区：[1]中国科学院金属研究所

出　　处：《材料研究学报》2002年第3期225-229,共5页Chinese Journal of Materials Research

基　　金：国家自然科学基金资助项目50171068和59971055.

摘　　要：观察了在不同温度下退火的Al/Al2O3复合材料的微观组织,结果表明,当退火温度达到570℃时包裹着Al核的非晶Al2O3壳开始破碎.研究了非晶Al2O3膜的破碎机理并在此基础上讨论了材料的微观结构与力学性能和内耗的关系,发现氧化膜的状态对材料的力学性能和内耗特征具有决定性的影响.Microstructure observations showed that the amorphous Al2O3 nanolayers in the Al/Al2O3 composite were mostly destroyed after treating at 570℃ for 40 min. The mechanism of rupture of amorphous Al2O3 nanolayer was discussed qualitatively. Based on the observation of microstructure, the relation between microstructure and mechanical properties and internal fraction was discussed. The mechanical properties and internal fraction of the composite depend on the status of the oxide shells.

关 键 词：碎化 Al2O3膜 AL/AL2O3复合材料 微观组织 力学性能 内耗 纳米材料 铝 氧化铝 

分 类 号：TB333[一般工业技术—材料科学与工程]