Optical Microscope

2 cases · 8 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Raw Material Microstructure: Coating Layer Detail focus: Microstructure clear all

Optical Microscope — sub-branches

NaOH Electrolytic Etched Micro 3Nital Etched Micrography by OM 5

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Micrography of the longitudinal section, in the center of the thickness of the pin, presenting an aligned ferritic-austeinitic structure.
180
VIEW
ML00146 / Jul.2018
Plastic Deformation of a SDSS Riser Pin
M - Super Duplex Stainless SteelP - PinAp - O&G Well DrillingCd - Bending
Cm - NaOH Electrolytic Etched MicroDf - Ferrite and Austenite
Micrographic aspect of the longitudinal section of the cylinder steel substrate, presenting a ferritic-pearlitic structure.
207
VIEW
ML00128 / Apr.2018
MIC of a Stored Hydraulic Cylinder
M - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite

More from these cases

ML00146 — Plastic Deformation of a SDSS Riser PinM - Super Duplex Stainless SteelP - PinAp - O&G Well DrillingCd - Bending
Micrography of a longitudinal section, at the surface of the pin, where the thermal spray layer is sound. The thickness of the layer is about 0.3 mm.
168
VIEW
ML00146 / Jul.2018
Plastic Deformation of a SDSS Riser Pin
M - Super Duplex Stainless SteelP - PinAp - O&G Well DrillingCd - Bending
Cm - NaOH Electrolytic Etched MicroDf - Coating Layer
Micrographic detail of a longitudinal section of the pin, at the surface, evidencing the thermal spray layer, about 0.3 mm. The layer presents typical characteristics of multiple layers, low amount of entrapped oxides and pores. The interface presents a high roughness level for a good adherence and some entrapped oxides. The structure of the SDSS substrate did not show thermal effects.
154
VIEW
ML00146 / Jul.2018
Plastic Deformation of a SDSS Riser Pin
M - Super Duplex Stainless SteelP - PinAp - O&G Well DrillingCd - Bending
Cm - NaOH Electrolytic Etched MicroDf - Coating Layer
ML00128 — MIC of a Stored Hydraulic CylinderM - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Micrographic detail of the ferritic-pearlitic structure of the cylinder steel substrate.
41
VIEW
ML00128 / Apr.2018
MIC of a Stored Hydraulic Cylinder
M - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Micrography of the longitudinal section of the cylinder , at the surface, where it was not yet damaged. The steel substrate is in the bottom of the figure, the Ni layer is in the center and the Cr layer is in the top of the figure.
38
VIEW
ML00128 / Apr.2018
MIC of a Stored Hydraulic Cylinder
M - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Cm - Nital Etched Micrography by OMDf - Ni layer
Micrography of the interface between the steel substrate and the first Ni layer. The Ni layer, 160 microns thick and 300HV hardness, is uniform and presents no discontinuities.
37
VIEW
ML00128 / Apr.2018
MIC of a Stored Hydraulic Cylinder
M - Low Carbon SteelP - Chromium PlatedAp - OffshoreCd - Localized Dissolution
Cm - Nital Etched Micrography by OMDf - Ni layer
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).
35
VIEW
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