Effect of surface finishing of a Zr-based bulk metallic glass on its corrosion behaviour

被引：73

作者：

Gebert, A. ^{[1
]}

Gostin, P. F. ^{[1
]}

Schultz, L. ^{[1
]}

机构：

[1] Leibniz Inst Solid State & Mat Res IFW Dresden, D-01171 Dresden, Germany

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 05期

关键词：

Zirconium; Alloy; AES; Amorphous structures; Passivity; Pitting corrosion; ZR65AL7.5NI10CU17.5 AMORPHOUS ALLOY; ELECTROCHEMICAL-BEHAVIOR; POLARIZATION BEHAVIOR; MECHANICAL-PROPERTIES; LOCALIZED CORROSION; PITTING CORROSION; ZIRCONIUM; NB; MICROSTRUCTURE; HYDROGEN;

D O I：

10.1016/j.corsci.2010.01.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zr-based metallic glasses passivate spontaneously, but exhibit also a certain pitting susceptibility. On the example of the Zr59Ti3Cu20Al10Ni8 alloy studied in 0.01 M Na2SO4 + x M NaCl (x = 0-0.1) electrolytes it is demonstrated that the surface finishing state and the pre-exposure conditions can significantly influence the free corrosion and anodic polarisation behaviour. Mechanical fine-polishing procedures can lead to extremely smooth topographies but also to Cu enrichment at the surface. This yields a pronounced Cu dissolution at low anodic polarisation prior to stable passivity and increases the pitting initiation susceptibility as compared to mechanically ground surface states. (C) 2010 Elsevier Ltd. All rights reserved.

引用

收藏

页码：1711 / 1720

页数：10

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