Interfacial delamination of a sandwich layer by aqueous corrosion

Sina Askarinejad; Vikram Deshpande; Norman Fleck

doi:10.1016/j.corsci.2022.110356

Interfacial delamination of a sandwich layer by aqueous corrosion

Sina Askarinejad, Vikram Deshpande, Norman Fleck (Lead / Corresponding author)

Mechanical and Industrial Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

42 Downloads (Pure)

Abstract

The mechanism of aqueous delamination of a methyl methacrylate -based adhesive layer, sandwiched between two steel plates, is investigated by a systematic series of critical tests. These tests include starving the specimen of oxygen, varying the aqueous environment from de-ionised water to water with a high concentration of salt, and varying the mechanical constraint imposed by the sandwich. Sandwich construction starves the delamination crack tip of oxygen, and delamination occurs by water attack of the interface. In contrast, an adhesive coating on a steel substrate undergoes cathodic delamination when oxygen is present at the crack tip and the delamination crack is filled with salt water.

Original language	English
Article number	110356
Number of pages	9
Journal	Corrosion Science
Volume	203
Early online date	4 May 2022
DOIs	https://doi.org/10.1016/j.corsci.2022.110356
Publication status	Published - 15 Jul 2022

Keywords

Cathodic delamination
Free corrosion
Water attack
Diffusion
Aqueous corrosion
Adhesive joints

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10.1016/j.corsci.2022.110356Licence: CC BY

Final Published VersionFinal published version, 2.13 MBLicence: CC BY

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title = "Interfacial delamination of a sandwich layer by aqueous corrosion",

abstract = "The mechanism of aqueous delamination of a methyl methacrylate -based adhesive layer, sandwiched between two steel plates, is investigated by a systematic series of critical tests. These tests include starving the specimen of oxygen, varying the aqueous environment from de-ionised water to water with a high concentration of salt, and varying the mechanical constraint imposed by the sandwich. Sandwich construction starves the delamination crack tip of oxygen, and delamination occurs by water attack of the interface. In contrast, an adhesive coating on a steel substrate undergoes cathodic delamination when oxygen is present at the crack tip and the delamination crack is filled with salt water.",

keywords = "Cathodic delamination, Free corrosion, Water attack, Diffusion, Aqueous corrosion, Adhesive joints",

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AU - Deshpande, Vikram

AU - Fleck, Norman

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N2 - The mechanism of aqueous delamination of a methyl methacrylate -based adhesive layer, sandwiched between two steel plates, is investigated by a systematic series of critical tests. These tests include starving the specimen of oxygen, varying the aqueous environment from de-ionised water to water with a high concentration of salt, and varying the mechanical constraint imposed by the sandwich. Sandwich construction starves the delamination crack tip of oxygen, and delamination occurs by water attack of the interface. In contrast, an adhesive coating on a steel substrate undergoes cathodic delamination when oxygen is present at the crack tip and the delamination crack is filled with salt water.

AB - The mechanism of aqueous delamination of a methyl methacrylate -based adhesive layer, sandwiched between two steel plates, is investigated by a systematic series of critical tests. These tests include starving the specimen of oxygen, varying the aqueous environment from de-ionised water to water with a high concentration of salt, and varying the mechanical constraint imposed by the sandwich. Sandwich construction starves the delamination crack tip of oxygen, and delamination occurs by water attack of the interface. In contrast, an adhesive coating on a steel substrate undergoes cathodic delamination when oxygen is present at the crack tip and the delamination crack is filled with salt water.

KW - Cathodic delamination

KW - Free corrosion

KW - Water attack

KW - Diffusion

KW - Aqueous corrosion

KW - Adhesive joints

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VL - 203

JO - Corrosion Science

JF - Corrosion Science

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Interfacial delamination of a sandwich layer by aqueous corrosion

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Keywords

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