Effect of Scandium on the Structure and Corrosion Properties of Vapor-Deposited Nanostructured Quasicrystalline Al-Cu-Fe Films

被引：24
作者：
Ryabtsev, S. I. [1 ]
Polonskyy, V. A. [1 ]
Sukhova, O. V. [1 ]
机构：
[1] Oles Honchar Dnipro Natl Univ, Dnipro, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2020年 / 58卷 / 9-10期
关键词：
ion-plasma deposition; quasicrystalline films; nanostructured state; aqueous sodium; chloride solutions; electrochemical activity; MICROSTRUCTURE; ALLOYS; FABRICATION;
D O I：
10.1007/s11106-020-00111-2
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structure and corrosion properties of quasicrystalline Al-Cu-Fe and Al-Cu-Fe-Sc films 200-260 nm thick produced by three-electrode ion-plasma sputtering of assembled targets were studied. The structural and phase composition of the films was determined by transmission and scanning electron microscopy, electron microprobe analysis, and X-ray diffraction. The corrosion properties were examined in 3, 5, and 16% aqueous NaCl solutions (pH = 6.9) at room temperature. An icosahedral fine quasicrystalline phase was found to form in the films deposited. The sizes of coherent scattering domains indicate that the coatings are nanostructured. The addition of 0.5 at.% Sc to the quasicrystalline Al-Cu-Fe films increases their corrosion resistance as evidenced by measurements of stationary potentials in saline solutions of different concentrations.
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收藏
页码：567 / 575
页数：9
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