纳米金属玻璃<br />-中国材料进展

文章信息/Info

Author(s):: YAO Li; JIN Zhaohui; School of Materials Science and Engineering, Shanghai Jiao Tong University

摘要:: 纳米金属玻璃是指“界面”及“晶粒”均处于非晶状态的一类纳米结构金属材料，最早由德国著名材料学家Herbert Gleiter博士提出，目的是在块体金属玻璃中引入纳米结构，得到传统金属玻璃所不具备的理化和机械性能。通过惰性气体冷凝法、磁控溅射沉积法等制备手段，迄今已成功合成了数种纳米金属玻璃。它们被证实具有较高的宏观拉伸塑性，独特的铁磁性，高效的催化性能和优异的生物兼容性。本文除了对纳米金属玻璃制备及性能做简要介绍外，同时也回顾了在原子尺度计算方面所取得的研究进展。实验和理论研究均表明纳米金属玻璃的确具有超越传统金属玻璃的优势。

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.