Copper Alloy

2 cases · 6 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Alpha & Beta Capture method: Optical Microscope Detail focus: Microstructure clear all

Copper Alloy — sub-branches

Brass 2

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Low magnification metallography of the coaster after etching, revealing a casting structure of alpha plus beta phases. Beta is the dark brown matrix phase and alpha is the dendritic yellow phase.
45
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - NH4OH+H2O+H2O2 Etched MicroDf - Alpha and Beta
Micrography of a transverse section of the platesheet presenting a duplex structure, alpha (light yellow) and beta (orange) phases.
214
VIEW
ML00125 / Mar.2018
Dezincification of a Cooler Tubesheet
M - BrassP - PlateAp - ShipCd - Preferential Dissolution
Cm - FeCl3+HCl+Ethanol Etched MicroDf - Alpha and Beta

More from these cases

ML00156 — Antique Silver Plated Decorative PieceM - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Metallography of the coaster after etching, revealing a casting structure of alpha plus beta phases. Beta is the dark brown matrix phase and alpha is the dendritic yellow phase.
48
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - NH4OH+H2O+H2O2 Etched MicroDf - Alpha and Beta
High magnification metallography of the coaster after etching, revealing a casting structure of alpha plus beta phases. Beta is the dark brown matrix phase and alpha is the dendritic yellow phase. The non destructive preparation created a metallographic surface not well polished (full of grinding scratches).
48
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - NH4OH+H2O+H2O2 Etched MicroDf - Alpha and Beta
ML00125 — Dezincification of a Cooler TubesheetM - BrassP - PlateAp - ShipCd - Preferential Dissolution
Micrography of the non corroded region of the tubesheet presenting a microstructure of alpha (light yellow phase) and beta (orange phase).
99
VIEW
ML00125 / Mar.2018
Dezincification of a Cooler Tubesheet
M - BrassP - PlateAp - ShipCd - Preferential Dissolution
Cm - FeCl3+HCl+Etanol Etched MicroDf - Alpha and Beta
Micrographic detail of the non corroded region of the tubesheet presenting a microstructure of alpha (light yellow phase) and beta (orange phase).
77
VIEW
ML00125 / Mar.2018
Dezincification of a Cooler Tubesheet
M - BrassP - PlateAp - ShipCd - Preferential Dissolution
Cm - FeCl3+HCl+Etanol Etched MicroDf - Alpha and Beta