Cast Iron

2 cases · 14 images for “corrosion”

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Cast Iron — sub-branches

Gray Cast iron 1

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The micrography of a longitudinal section of the pipe, close to the internal surface, shows a general corrosion mechanism (with slow wall thickness loss), although the graphite/matrix interface is corroded preferentially.
569
VIEW
ML00034 / Apr.2017
45 Years Old Acquaduct Grey Cast Iron
M - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Cm - Nital Etched Micrography by OMDf - Corrosion
Fractographic detail of the interconnected graphite flakes and corroded matrix.
50
VIEW
ML00141 / Jul.2018
Brittle Fracture of a Corroded Gray Cast Iron
M - Gray Cast ironP - CastingAp - EngineCd - Brittle Fracture
Cm - Fractography by SEMDf - Corrosion

More from these cases

ML00034 — 45 Years Old Acquaduct Grey Cast IronM - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Micrographic detail of the graphite/matrix interface corrosion, leading to a general corrosion loss.
189
VIEW
ML00034 / Apr.2017
45 Years Old Acquaduct Grey Cast Iron
M - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Cm - Nital Etched Micrography by OMDf - Graphite in Flakes
Micrography of the longitudinal section of the pipe, close to the internal surface, showing graphite in flakes and ferritic matrix with small regions of perlite.
231
VIEW
ML00034 / Apr.2017
45 Years Old Acquaduct Grey Cast Iron
M - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic Matrix
Micrography of the longitudinal section of the pipe, close to the internal surface, showing graphite in flakes and ferritic matrix with small regions of perlite and eutetic in the middle of the perlite colonies.
191
VIEW
ML00034 / Apr.2017
45 Years Old Acquaduct Grey Cast Iron
M - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic Matrix
Micrography of the longitudinal section of the pipe, in the center of the thickness. Graphite in flakes and ferritic matrix with small regions of perlite.
179
VIEW
ML00034 / Apr.2017
45 Years Old Acquaduct Grey Cast Iron
M - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic Matrix
Micrography of the longitudinal section of the pipe, in the center of the thickness. Graphite in flakes and ferritic matrix with small regions of perlite.
162
VIEW
ML00034 / Apr.2017
45 Years Old Acquaduct Grey Cast Iron
M - Gray Cast ironP - Centrifugally Cast PipeAp - AcquaductCd - General Corrosion
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite

+4 more from this case →

ML00141 — Brittle Fracture of a Corroded Gray Cast IronM - Gray Cast ironP - CastingAp - EngineCd - Brittle Fracture
Micrographic detail of the corroded surface of the cast cylinder, with interconnected graphites and a notch effect.
30
VIEW
ML00141 / Jul.2018
Brittle Fracture of a Corroded Gray Cast Iron
M - Gray Cast ironP - CastingAp - EngineCd - Brittle Fracture
Cm - As polished micrographyDf - Corrosion
Micrographic detail of the corroded surface of the cast cylinder in contact with treated water, as polished, showing that the corrosion occurs preferentially at the flake to matrix interfaces.
31
VIEW
ML00141 / Jul.2018
Brittle Fracture of a Corroded Gray Cast Iron
M - Gray Cast ironP - CastingAp - EngineCd - Brittle Fracture
Cm - As polished micrographyDf - Corrosion
Same position of the previous micrographic detail, at the internal surface of the cast cylinder in contact with treated water, after Nital etching, showing the corrosion at the flake to matrix interfaces.
30
VIEW
ML00141 / Jul.2018
Brittle Fracture of a Corroded Gray Cast Iron
M - Gray Cast ironP - CastingAp - EngineCd - Brittle Fracture
Cm - Nital Etched Micrography by OMDf - Corrosion