【摘 要】
：
With the fast development in nano materials, to obtain the detailed microstructure information, microscopes with much higher resolution than the conventional on
【机 构】
：
Institute of Materials
【基金项目】
：
the National Advanced Technology Research Foundation;国家发改委资助项目;上海市科委资助项目;上海市科委资助项目
论文部分内容阅读
With the fast development in nano materials, to obtain the detailed microstructure information, microscopes with much higher resolution than the conventional ones are required. A three-dimensional atom probe (3DAP), an instrument with nearatomic resolutions of about 0.06 and 0.2 nm in depth and transverse direction, respectively, has been employed to map out the elemental distribution of some conductive materials within a nano-scale volume.This instrument is fit to analyze the elemental distribution in nano materials and nano precipitation in common materials. 3DAP is applied to investigate the microstructure of Nd2Fe14B/α-Fe nanocomposite magnets. B, Fe-enriched, Zr-enriched and Nd,Fe-enriched clusters have been found, which cannot be identified by any other instrument.
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