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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Coating Layer Capture method: Optical Microscope Detail focus: Hard Chromium Layer clear all

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Micrography of the interface between the Ni layer (bottom) and the Cr layer (top of the figure). The Cr layer, 250 microns thick and 1100HV hardness, presents small pores and cracks (that appear like black shadows, not focused).
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ML00128 / Apr.2018
MIC of a Stored Hydraulic Cylinder
M - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Cm - Nital Etched Micrography by OMDf - Hard Chromium Layer