21 research outputs found
High Resolution Study of Hydrogen Permeation through Metals by Scanning Kelvin Probe Force Microscopy
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Scanning Kelvin probe force microscopy for the in situ observation of the direct interaction between active head and intermetallic particles in filiform corrosion on aluminium alloy
No full textApplication of Atomic Force Microscopy in its Kelvin Probe Mode (SKPFM) over Filiform Corrosion of Aluminum Alloys
No full textApplication of Atomic Force Microscopy in its Kelvin Probe Mode (SKPFM) over Filiform Corrosion of Aluminum Alloys
No full textInvestigation of the Interaction between H<sub>2</sub> and trap sites in Duplex Steel by Scanning Kelvin Probe Force Microscopy
No full textSpatially resolved high sensitive measurement of hydrogen permeation by scanning Kelvin probe microscopy
No full textRecently we have introduced a novel Kelvin probe based approach for spatially highly resolved and highly sensitive measurement of hydrogen in materials and its permeation through materials. In this work we will show how this can be applied for detecting active corrosion sites on the surface of a material from the backside. At the low potentials of actively corroding metal hydrogen uptake occurs at defect sites of the coating and this can be monitored by detecting the resulting higher detectable hydrogen permeation currents at the backside. High lateral resolution is possible in general, however, the achievable resolution is limited by the thickness of the material to be investigated and for longer monitoring times also lateral cross diffusion in the palladium detection layer has to be taken into account. (C) 2013 Elsevier Ltd. All rights reserved
SECM and SKPFM studies of the local corrosion mechanism of Al alloys-A pathway to an integrated SKP-SECM system
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