Abstract
Hydrogen dissolved in the Cr2O3 scale formed on the stainless steel in the
H2O-containing atmospheres is observed by TDS (thermal desorption spectroscopy) measurements.
The amount of dissolved hydrogen in the Cr2O3 scale reaches a maximum about 0.32 mol% when
the H2O concentration in the gas reaches 20%. It was found from GDS (glow discharge
spectroscopy) measurements that hydrogen may exist at the oxide scale / substrate interface or in
Cr2O3 scale bounded that interface. However, results from the Vickers hardness and the observation
of scale morphology by SEM (scanning electron microscopy), hydrogen dissolved in the Cr2O3
scale would have little effect on a decrease in the mechanical property of the Cr2O3 scale. Therefore,
hydrogen dissolved in the Cr2O3 scale may not be main factor of the deterioration of the Cr2O3
scale.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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