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3 cases · 3 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: FeCl3+HCl+H2O solution Etched Macro clear all

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Macrography of a ring transverse section presenting a large variation in the grain size, revealing the diferences in the solidification rate.
453
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ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O solution Etched MacroDf - Casting Structure
The material structure is similar all through the thickness and there are no evidencies of corrosion at the surfaces.
89
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ML00043 / Apr.2017
CuNi Condenser Tube
M - CupronickelP - Seamless tubeAp - Heat ExchangerCd - Removed From Service
Cm - FeCl3+HCl+H2O solution Etched MacroDf - At the Surface
Uniform structure of the 1" shear pin all through the section. The edge is the fracture surface.
108
VIEW
ML00007 / Dec.2020
Free Machining Brass in Shear Pin
M - BrassP - Machined PartAp - LiftingCd - Shear
Cm - FeCl3+HCl+H2O solution Etched MacroDf - Longitudinal Section