Characterization of corrosion phenomena of Zr-Ti-Cu-Al-Ni metallic glass by SEM and TEM

被引：37

作者：

Paillier, Jerome ^{[1
]}

Mickel, Christine ^{[1
]}

Gostin, Petre Flaviu ^{[1
]}

Gebert, Annett ^{[1
]}

机构：

[1] IFW Dresden, Inst Metall Mat, D-01171 Dresden, Germany

来源：

MATERIALS CHARACTERIZATION | 2010年 / 61卷 / 10期

关键词：

Metallic glass; Corrosion; SEM; TEM; PITTING CORROSION; AMORPHOUS METAL; BEHAVIOR; ALLOYS; NB;

D O I：

10.1016/j.matchar.2010.06.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion phenomena are investigated for a Zr59Ti3Cu20Al10Ni8 metallic glass immersed in hydrofluoric acid (HF) in open-circuit conditions and by means of electron microscopes (SEM and TEM) Several morphologies develop on the corroded surface and especially large and deep pits TEM study demonstrates that Cu-rich nanocrystals of 5-10 nm are formed inside the corrosion pits (on their walls) during the corrosion process These nanocrystals are not only by-products of the corrosion process but they very likely play a role in the development of the corrosion pitting morphology. They could have a dual role (i) protecting the capped areas against dissolution and (ii) speeding the dissolution of neighboring uncapped areas by the creation of local galvanic cells (C) 2010 Elsevier Inc All rights reserved

引用

页码：1000 / 1008

页数：9

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