Improving corrosion resistance of magnesium-based alloys by surface modification with hydrogen by electrochemical ion reduction (EIR) and by plasma immersion ion implantation (PIII)

被引：33

作者：

Bakkar, A

Neubert, V

机构：

[1] Dr Doelling & Dr Neubert GmbH, Inst Mat Pruefung & Werkstofftech, D-38678 Clausthal Zellerfeld, Germany

[2] Suez Canal Univ, Dept Met & Mat Engn, Suez, Egypt

来源：

CORROSION SCIENCE | 2005年 / 47卷 / 05期

关键词：

magnesium alloys; MgH2; ion implantation; AES; SIMS; corrosion;

D O I：

10.1016/j.corsci.2004.06.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnesium-based hydrides are well known that they have a high hydrogen-storage capacity. In this study, two different methods have been provided for hydrogen surface modification of high purity magnesium (hp Mg) and AZ91 magnesium alloy. One was electrochemical ion reduction (EIR) of hydrogen from an alkaline electrolyte on such Mg-based cathode. The other was plasma immersion ion implantation (PIII or PI3) into Mg-based substrate. The depth profile of H-modified surfaces was described by Auger electron spectroscopy (AES) and by secondary ion mass spectrometry (SIMS) measurements. Corrosion testing was carried out in Avesta cell by potentiodynamic polarisation in chloride-containing aqueous solutions of pH 7 and pH 12. A greatly significant improvement in the corrosion resistance of H-modified surfaces was verified. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1211 / 1225

页数：15

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