Sampling and Analysis

2 cases · 2 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Chromium Plated Capture method: Scanning Electron Microscope clear all

Sampling and Analysis — sub-branches

At the Surface 2

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Scanning electron microscopy image of the chromium plated surface in a position where the cylinder was not damaged, showing the surface finishing.
35
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ML00128 / Apr.2018
MIC of a Stored Hydraulic Cylinder
M - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Cm - Surface Aspect by SEMDf - At the Surface
Scanning electron fractography showing that the fracture micromechanism is intergranular close to the surface of the pin, suggesting a hydrogen embrittlement effect at the carburized layer. The cracks were created during the electrolytic plating, and propagated later during service.
44
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ML00081 / Aug.2017
Hydrogen Cracking of a Chromium Plated Carburized Pin
M - Low Alloy for Thermochemical TreatmentP - Chromium PlatedAp - AutomotiveCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - At the Surface