Atlas

3 cases · 14 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Used Standard: B Capture method: Optical Microscope clear all

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Low magnification micrography of a transverse section of the ring showing a dendritic structure.
64
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Dendritic
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
419
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure
The micrography of the tube shows a granular structure and light deformation lines. No evidences of corrosion from the external surface (upper side of the figure) or internal surface (lower side of the figure).
440
VIEW
ML00043 / Apr.2017
CuNi Condenser Tube
M - CupronickelP - Seamless tubeAp - Heat ExchangerCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Longitudinal Section

More from these cases

ML00166 — Tin Bronze Wear Ring of Seawater PumpM - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Micrography of a transverse section of the ring showing a cored alpha structure with segregation at interdendritic regions. This structure is in a region close to the ring surface.
52
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Dendritic
Micrography of a transverse section of the ring showing a cored alpha structure with strong segregation at interdendritic regions, and regions of a white structure at grain boundaries. This structure is in a region close to the center of the ring.
51
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Dendritic
Micrographic detail of the cored alpha structure with light segregation at intergranular regions (light layer at grain boundaries), and a white euctetoid structure (alpha and delta) at interdendritic space. This structure is in a region close to the ring surface, where the solidification was quicker.
49
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Grain boundary intermetallics
Micrographic detail of the cored alpha structure with strong segregation at intergranular regions (dark layer at grain boundaries), and a white euctetoid structure (alpha and delta) at interdendritic space. This structure is in a region close to the center of the ring, where the solidification was slower.
47
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Grain boundary intermetallics
Tin Bronze Wear Ring of Seawater Pump
2
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - General View

+1 more from this case →

ML00058 — High-Pressure Piston Seal in Casting Al AlloyM - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
45
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
34
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
32
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure
ML00043 — CuNi Condenser TubeM - CupronickelP - Seamless tubeAp - Heat ExchangerCd - Removed From Service
The material structure is monophasic.
110
VIEW
ML00043 / Apr.2017
CuNi Condenser Tube
M - CupronickelP - Seamless tubeAp - Heat ExchangerCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - Single phase
Detail of the structure at the surface.
79
VIEW
ML00043 / Apr.2017
CuNi Condenser Tube
M - CupronickelP - Seamless tubeAp - Heat ExchangerCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - At the Surface