Influence of yttrium on surface chemistry and stability of passive film in Al-based binary metallic glasses

2018 ◽  
Vol 457 ◽  
pp. 536-547 ◽  
Author(s):  
Minghao Gao ◽  
Suode Zhang ◽  
Baijun Yang ◽  
Jianqiang Wang
Keyword(s):  
Surface Chemistry ◽  
Passive Film ◽  
Metallic Glasses ◽  
Binary Metallic Glasses

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

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 929
Author(s):  
Dandan Liang ◽  
Jo-Chi Tseng ◽  
Xiaodi Liu ◽  
Yuanfei Cai ◽  
Gang Xu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Passive Film ◽  
Metallic Glasses ◽  
Function Analysis ◽  
Supercooled Liquid ◽  
Structural Heterogeneity ◽  
Coordination Shell ◽  
Supercooled Liquid Region ◽  
Liquid Region ◽  
Corrosion Performance

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.

Neutron Diffraction Study on the Structure of the Metallic Glass Cu57Zr43

1983 ◽  
Vol 38 (11) ◽  
pp. 1210-1222 ◽  
Author(s):  
P. Lamparter ◽  
S. Steeb ◽  
E. Grallath
Keyword(s):  
Neutron Diffraction ◽  
Metallic Glasses ◽  
Neutron Diffraction Study ◽  
Isotopic Substitution ◽  
Substitution Method ◽  
Chemical Ordering ◽  
Structure Factors ◽  
Theoretical Investigations ◽  
Binary Metallic Glasses ◽  
Scattering Contribution

The structure of amorphous Cu57Zr43 has been investigated by neutron diffraction using the isotopic substitution method with the isotopes 63Cu and 65Cu besides natural Cu. From the scattering contribution of concentration fluctuations to the measured structure factors and from the atomic distances chemical ordering is concluded to exist in amorphous Cu57Zr43. The structural results are compared with previous experimental and theoretical investigations of Cu- Zr- and other binary metallic glasses formed by transition metals. Evidence is given that the topological as well as the chemical short range order is asymmetric in respect to both components in this type of metallic glasses

The nature of the atomic-level structure in the Cu–Zr binary metallic glasses

2012 ◽  
Vol 26 ◽  
pp. 8-10 ◽  
Author(s):  
Z.D. Sha ◽  
H. Pan ◽  
Q.X. Pei ◽  
Y.W. Zhang
Keyword(s):  
Metallic Glasses ◽  
Level Structure ◽  
Atomic Level ◽  
Binary Metallic Glasses

Electro Chemistry of Cr- and Ni-Base Binary Metallic Glasses

1991 ◽  
Vol 20-28 ◽  
pp. 597-614
Author(s):  
P.V. Nagarkar ◽  
T.P. Moffat ◽  
Peter C. Searson ◽  
R.M. Latanision
Keyword(s):  
Metallic Glasses ◽  
Binary Metallic Glasses
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