Investigation of the Structural Heterogeneity and Corrosion Performance of the Annealed Fe-Based Metallic Glasses

被引：17
作者：
Liang, Dandan [1 ,2 ]
Tseng, Jo-Chi [1 ]
Liu, Xiaodi [1 ]
Cai, Yuanfei [3 ]
Xu, Gang [1 ]
Shen, Jun [1 ]
机构：
[1] Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen 518060, Peoples R China
[2] Shenzhen Univ, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Coll Optoelect Engn, Shenzhen 518060, Peoples R China
[3] Tongji Univ, Coll Mat Sci & Engn, Shanghai 201804, Peoples R China
来源：
MATERIALS | 2021年 / 14卷 / 04期
基金：
中国国家自然科学基金;
关键词：
metallic glass; synchrotron radiation; heterogeneity; electrochemical behavior; passive film;
D O I：
10.3390/ma14040929
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study investigated the structural heterogeneity, mechanical property, electrochemical behavior, and passive film characteristics of Fe-Cr-Mo-W-C-B-Y metallic glasses (MGs), which were modified through annealing at different temperatures. Results showed that annealing MGs below the glass transition temperature enhanced corrosion resistance in HCl solution owing to a highly protective passive film formed, originating from the decreased free volume and the shrinkage of the first coordination shell, which was found by pair distribution function analysis. In contrast, the enlarged first coordination shell and nanoscale crystal-like clusters were identified for MGs annealed in the supercooled liquid region, which led to a destabilized passive film and thereby deteriorated corrosion resistance. This finding reveals the crucial role of structural heterogeneity in tuning the corrosion performance of MGs.
引用
收藏
页码：1 / 14
页数：13
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