Removed From Service

2 cases · 6 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Standard: B Capture method: Optical Microscope Detail focus: Microstructure 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
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

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