Electrochemical Sensing of Dissolved Hydrogen in Aqueous Solutions as a Tool to Monitor Magnesium Alloy Corrosion

被引：14

作者：

Kuhlmann, Julia ^{[1
]}

Witte, Frank ^{[2
]}

Heineman, William R. ^{[1
]}

机构：

[1] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA

[2] Hannover Med Sch, Ctr Biocompatibil & Implant Immunol, CrossBIT, D-30625 Hannover, Germany

来源：

ELECTROANALYSIS | 2013年 / 25卷 / 05期

关键词：

Biodegradable implants; Magnesium alloy; Electrochemical hydrogen sensing; Potentiometry; Amperometry; PLATINUM ELECTRODE; GAS SENSORS; BLOOD-FLOW; SYSTEM; BONE; MG;

D O I：

10.1002/elan.201200457

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Magnesium and its alloys have been the focus of the development of biodegradable metallic implant materials for years. Since water is reduced to form hydrogen gas during their corrosion, the amount and rate of hydrogen evolution, and therefore the dissolved hydrogen, could be used as an indicator to monitor and compare the corrosion. Here we report on a commercially available Clark-Type amperometric microsensor and a simple potentiometric sensor for hydrogen to monitor the corrosion of a magnesium alloy in aqueous solutions. The sensors were compared using rare-earth containing Mg alloy discs (Mg with 4% Y, 2% Nd, 0.5% Ga, 0.5% Dy) immersed in phosphate buffered saline (pH7.4) and 3.5% NaCl.

引用

页码：1105 / 1110

页数：6

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