ZHANG Dengxia MA Chenghui CAI Ming Institute of Mechanics
,
Academia Sinica
,
Beijing
,
ChinaAI Baoren ZHANC Jinyuan ZHU Ruizhen LIU Chunlan Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
China Associate Professor
,
Institute of Mechanics
,
Academia Sinica
,
Beijing 100080
,
China
金属学报(英文版)
Observations of microstructure of explosive compacts made of Al or Al-Li alloy powders by atomization with water,nitrogen or ultrasoic Ar gas were carried out under optical and scanning electron microscopes.The rsults indicate that super quality explosive compact can only be obtained by powders of which the thickness of the oxide layer is less than 30 nm.
关键词:
Al powder
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null
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null
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null
于献
,
郁飞
,
倪维良
,
谭伟民
涂料工业
采用铁蓝包覆铝粉制备黄绿色红外低发射率聚氨酯无光涂层,用SEM及X射线衍射仪、红外发射率测试仪、色度仪、光泽仪分别对包覆铝粉的形态及成分、涂层的红外发射率、可见光颜色及光泽进行表征,结果表明:包覆铝粉不仅能降低涂层的光泽,而且能有效降低涂层在8～14μm波段的红外发射率.当包覆铝粉质量分数小于20％时,涂膜附着力和耐冲击性优良,当其用量达到20％～30％时,涂膜物理机械性能下降明显.相同颜色的包覆铝粉涂层和普通铝粉调色涂层对比发现,前者具有显著的低发射率特性,主要是因为包覆铝粉具有更低的金属颗粒间距和更高的电导率.
关键词:
红外发射率
,
机械性能
,
铁蓝
,
铝粉
