Failure mechanism of phosphated adhesively bonded hot-dipped galvanized steel: a small-area XPS study

Fitzpatrick, M. F.; Ling, Jingwei; Watts, John F.

doi:10.1002/(sici)1096-9918(200002)29:2<131::aid-sia705>3.0.co;2-7

Cited by 8 publications

References 7 publications

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Interfacial chemistry of adhesives on hydrated aluminium and hydrated aluminium treated with an organosilane

Watts

Rattana

Abel

2004

Surface & Interface Analysis

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The adsorption of a commercial adhesive and two of its major components -an amine curing agent [2,4-toluene diisocyanate urone (TDI urone)] and an adhesive prepolymer resin [diglycidyl ether of bisphenol A (DGEBA)] -on a hydrated aluminium surface and the hydrated surface coated with gglycidoxypropyltrimethoxysilane (GPS) has been investigated by x-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The study of TDI urone adsorption indicated that adsorption was of the chemisorption type, and a specific interaction involving this molecule and the GPS immobilized on the hydrated aluminium surface was identified. From XPS and ToF-SIMS data it was found that the types of interaction of the curing agent with the bare substrate were of the donor-acceptor type.Study of the DGEBA adsorption showed different-shaped isotherms for the bare and the GPS-coated substrates. It was found that the typical Langmuir isotherm type was obtained for the GPS-coated substrate whereas no adsorption plateau was observed for the bare substrate within the concentration range studied. This resulted from a change in the conformation of the DGEBA molecule on the substrate when the concentration of DGEBA solution was increased. The bonding of DGEBA with both types of substrates was assumed to be via acid-base interactions (i.e. donor-acceptor interactions).Adsorption of the commercial adhesive on the hydrated surfaces was of BET Type IV form, rather than the simple monolayer adsorption isotherm (Langmuir type). This indicates multilayer adsorption, presumably in the pores of the hydrated substrate, as a result of a process analogous to adsorption condensation.

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Interfacial chemistry of adhesives on hydrated aluminium and hydrated aluminium treated with an organosilane

Watts

Rattana

Abel

2004

Surface & Interface Analysis

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Identification of segregation phase on a batch hot‐dip‐coated Zn/0.1Al/0.2Sb surface

Wang

Che

2007

Surface & Interface Analysis

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The segregation of antimony in a batch hot-dipped regular-spangle galvanized coating from a Zn-0.1Al-0.2Sb bath was investigated. The samples were characterized by using SEM/EDS. The nature of the segregation phase was determined by XRD as bSb 3 Zn 4 . Assisted with Sb-Zn phase diagram, the behavior of antimony during the solidification process of the Zn-0.1Al-0.2Sb coating is examined. It is suggested that the coating solidification proceeds in three stages. Owing to the cooling rate of batch hot dip galvanizing process smaller than that of continuous hot dip galvanizing line (CGL), the resulting structure of the segregation phase in current work is bSb 3 Zn 4 instead of metastable zSb 2 Zn 3 for CGL.

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Microbeam analysis applied to adhesion, surfaces and interfaces

Watts

2008

Microchim Acta

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Failure mechanism of phosphated adhesively bonded hot-dipped galvanized steel: a small-area XPS study

Cited by 8 publications

References 7 publications

Interfacial chemistry of adhesives on hydrated aluminium and hydrated aluminium treated with an organosilane

Interfacial chemistry of adhesives on hydrated aluminium and hydrated aluminium treated with an organosilane

Identification of segregation phase on a batch hot‐dip‐coated Zn/0.1Al/0.2Sb surface

Microbeam analysis applied to adhesion, surfaces and interfaces

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