文章信息/Info

Title:

Nanostructured Metallic Glass

作者:

 姚李; 金朝暉

上海交通大學材料科學與工程學院

Author(s):

 YAO Li;  JIN Zhaohui

School of Materials Science and Engineering, Shanghai Jiao Tong University

關鍵詞:

納米金屬玻璃; 材料制備; 材料結構與性能關系; 納米金屬玻璃復合材料

DOI:

10.7502/j.issn.1674-3962.2016.08.04

文獻標志碼:

A

摘要:

納米金屬玻璃是指“界面”及“晶粒”均處于非晶狀態(tài)的一類納米結構金屬材料，最早由德國著名材料學家Herbert Gleiter博士提出，目的是在塊體金屬玻璃中引入納米結構，得到傳統(tǒng)金屬玻璃所不具備的理化和機械性能。通過惰性氣體冷凝法、磁控濺射沉積法等制備手段，迄今已成功合成了數(shù)種納米金屬玻璃。它們被證實具有較高的宏觀拉伸塑性，獨特的鐵磁性，高效的催化性能和優(yōu)異的生物兼容性。本文除了對納米金屬玻璃制備及性能做簡要介紹外，同時也回顧了在原子尺度計算方面所取得的研究進展。實驗和理論研究均表明納米金屬玻璃的確具有超越傳統(tǒng)金屬玻璃的優(yōu)勢。

Abstract:

Both “grain boundaries” and “grains” are amorphous in a nanoglass, as proposed originally by Dr. Herbert Gleiter, a German scientist. Nanostructures introduced into traditional bulk metallic glass in such a way make novel properties achievable，underlying potential applications in a number of new material domains. Up to now, several nanoglasses have been synthesized via inert-gas condensation or magnetron sputtering techniques. They exhibit outstanding macroscopic tensile plasticity, unusual ferromagnetism, high catalytic performance and good biocompatibility. The advantages have been demonstrated recently not only by experiments, but also by theoretical considerations, in particular, along with atomistic simulations.