exfoliation corrosion

[eks‚fō·lē′ā·shən kə‚rō·zhən]

(metallurgy)

A type of corrosion that progresses parallel to the metal surface in such a manner that underlying layers are gradually separated.

References in periodicals archive ?

One type of corrosion you can easily spot around steel fasteners, as one example, is exfoliation corrosion, which is an advanced form of intergranular corrosion.

Avionics corrosion: Moisture is the enemy: temperature differentials, improper storage and ram air cooling can corrode expensive avionics. Routine inspection and periodic antenna replacement is worth the effort

Approximately 0.02 mm and 0.17 mm were milled from the corroded panel surface and surface plots were produced characterizing the extent of exfoliation corrosion penetrating to these depths.

After corrosion exposure, exfoliation corrosion was observed over the entire surface of the panel with the cladding removed.

As slivers of uncorroded aluminum are lifted from the substrate, additional grain boundaries are exposed to the corrosion environment and a new layer of exfoliation corrosion is initiated.

Uniform exfoliation corrosion was observed over the entire panel surface after corrosion exposure.

[12] "Standard Test Method for Exfoliation Corrosion Susceptibility 2XXX and 7XXX Series Aluminum Alloys (EXCO Test)," ASTM G34-01(2013), 2013.

Effect of Partial Cladding Pattern of Aluminum 7075 T651 on Corrosion and Mechanical Properties

* Visual Assessment of Exfoliation Corrosion Susceptibility of 5XXX Series Aluminum Alloys (ASSET Test) (ASTM G66-99(2005)e1)

Laboratory Testing Inc. Exhibiting at NACE Expo 2014

Idrissi, 'Use of acoustic emission technique for the early detection of aluminum alloys exfoliation corrosion', NDT & E International, 35, (6), 385-392, 2002.

On the use of the acoustic emission technique for in-situ monitoring of the pulverization of battery electrodes

During a 7/56-day inspection on an SH-60B aboard USS Reuben James (FFG-57), Petty Officer Sadler prevented a possible mishap when he noticed serious exfoliation corrosion on the hinge bracket of the APU door.

Bravo Zulu: sailors and marines preventing mishaps

Second, the backscatter electron image of Figure 11 showed significant corrosion under the paint adjacent to the fastener, including exfoliation corrosion, as is often observed around fasteners.

Underfilm corrosion on polyurethane-coated aluminum alloy 2024-T3 containing dissimilar metal fasteners

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