Quantitative determination of hydrogen in solids by gas chromatography.
Processes such as electroplating or acid cleaning are notorious causes of post-processing failure through hydrogen embrittlement. So, the determination of amounts of hydrogen in metals is of great importance. An analysis method for investigation of H content in solids has been established based on hot extraction and gas chromatography system. Hot extraction in inert gas enables complete and/or partial removal of the hydrogen from the samples. A gas chromatography system is used to determine quantitatively the amount of thermally desorbed hydrogen. An investigation of the baking operating conditions is made of the hydrogen desorption rate of zinc-plated steel parts. Then, an analysis of the polarisation conditions upon chromium electroplating is given.
Addach
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H
Laboratoire de Chimie des Matériaux et Interfaces, Université de Franche-Comté, 16 route de Gray, Besançon Cedex 25030, France.
Berçot
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P
Wery
M
M
Rezrazi
M
M
D002138:Calibration; D002849:Chromatography, Gas / Q000379:methods*; D006859:Hydrogen / Q000032:analysis*; D013696:Temperature
D006859:Hydrogen