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Recently, the research group led by Lu Ke, an academician of China Academy of Science and a foregoer of nano-metallic materials group in Herbert Gleiter Institute of nanoscience with NUST, published a paper in Science Magazine with the name of Discovery of A New-style Nano-Stratified Structure with Ultrahard and Ultrastable Property in Metal. This research result would be published on the Science Weekly of October 18th 2013.This is the first time for Nanjing University of Sicence and Technology to publish a paper on International top science journal as an author’s unit.

 

From 1980s when German scientist, professor Gleiter put forward nano-material (grain size smaller than 100 NM), scholars’ deep researches from various countries led to important progress in the manufacturing, structure, mechanical property and physical and chemical properties of nano-metallic material.

 

Nevertheless, this industry still faces with some urgent world-class bottleneck problems, like high strength while poor tenacity and plasticity of  nano-metallic material, its low structure-stability and obvious tendency of grain growth, etc.

 

In this paper, Academician Lu Ke introduced in detail about how to use technical equipment researched and developed by his group to form planar nano-stratified structure. This kind of structure with an average thickness of 20 NM possesses low-angle boundary, a hardness of 6.4 Gpa and a higher Grain coarsening temperature. It breaks through the reverse relation between strength and stability of traditional metal material and opens up a new approach to develop a new-generation of high overall-performance nano-metallic material.

 

The material demonstrated by Luke is extraordinary, which will open a new field of vision for fundamental research and potential application of all kinds of industrial manufacturings, an article in the Opinion column of Science Magazine published on the same date said.

 

The research is funded by Ministry of science and technology major national scientific research projects and National Science Foundation.

 

Date: 10/25/2013

By: Jeremy