超硬纳米多层膜致硬机理研究
1. 燕山大学理学院, 秦皇岛 066004;
2. 燕山大学材料学院, 秦皇岛 066004
收稿日期: 2005-07-11
修回日期: 2005-09-12
网络出版日期: 2006-07-20
Hardening Mechanism for Nano-multilayer Films
1. College of Science, Yanshan University, Qinhuangdao 066004, China;
2. College of Material Science and Engineering, Yanshan University, Qinhuangdao 066004, China
Received date: 2005-07-11
Revised date: 2005-09-12
Online published: 2006-07-20
杜会静 , 田永君 . 超硬纳米多层膜致硬机理研究[J]. 无机材料学报, 2006 , 21(4) : 769 -775 . DOI: 10.3724/SP.J.1077.2006.00769
The study of the hardening mechanism for the nano-multilayer films is the foundation for the preparation of those films. Several different models were proposed to interpret the super-hard effect in the nano-multilayer films, though they cannot interpret all the phenomena in those films. The progress of the research on the superhardness effect in the nano-multilayer films was reviewed.
It shows that all the mechanisms are related to the movement of the dislocation. The difference of the elastic modulus between the two materials plays the important role for the superhadness effect in the nano-multilayer films, while the alternated strain field plays the less important role. The developmental directions and the problems for the nano-multilayer films were also discussed.
Key words： nano-multilayer films; superhadness effect
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