Study of aluminium bonded joints by analytical electron microscopy: Microstructural changes with aging

Berbezier, I.; Romand, M.; Martin, Jean Michel; Cuntz, J. M.

doi:10.1163/156856192x00476

Cited by 5 publications

(1 citation statement)

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“…65,66 These processes are not considered as real methods of metallization; rather, they are dispersion of a metal powder in the polymer (first process) or an adhesion between the metal and the polymer (second process). Due to the substantial reduction of the mechanical properties of the polymer in the first process and being troublesome as well as high costs of the second process which often requires several surface treatments to enhance the adhesion between the metal and the polymer, 67 –71 a new trend had recently been established for preparation of metallized films based on metal complexes of PAHs. 72,73 Conductivity of the metalized films was influenced by the dopant concentration, temperature, and time of exposure.…”

Section: Metallized Wholly Aromatic Pah Filmsmentioning

confidence: 99%

High-performance wholly aromatic polyamide–hydrazides

Elsabeé

Morsi

Selim³

2017

High Performance Polymers

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The review summarizes the various methods of preparing wholly aromatic polyamide–hydrazides (PAHs). Polyhydrazides are a class of polymers that possess in their repeating units one amide (–NHOC–) and one hydrazide (–CONHNHOC–) linking bond between appropriate aromatic nuclei. The review provides several figures of different molecular structures of PAH and expounds the methods of polymerization, low, high temperature, and phosphorylation polycondensation methods. Polyhydrazides exhibit some unique and potentially useful properties such as outstanding thermal and thermo-oxidative resistance, very high mechanical strength, and ultrahigh moduli. PAHs undergo structural transformation into poly(amide-1,3,4-oxadiazole)s upon heating, which are also considered highly thermally stable polymers. The review presents a description of the structure–property relation of PAHs. The application of PAHs in reverse osmosis applications has been discussed, as well as the preparation of fibers and metallized PAHs films. Modification of the PAH with carbon nanotubes and graphene and the future prospects for PAHs were introduced with comprehensive references pertaining to this area of research.

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Section: Metallized Wholly Aromatic Pah Filmsmentioning

confidence: 99%

High-performance wholly aromatic polyamide–hydrazides

Elsabeé

Morsi

Selim³

2017

High Performance Polymers

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X‐ray photoelectron spectroscopy study of aluminium surfaces prepared by anodizing processes

Cordier¹,

Ollivier²

1995

Surface & Interface Analysis

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X-ray photoelectron spectroscopy was used to compare several pretreatments of aluminium surfaces used in aerospace and aircraft industry. These anodizing processes, which aim at preparing the metal surface for adhesive bonding or painting, all lead to the formation of an aluminium oxide layer. A set of aluminium samples representing the various steps of the processes was analysed by XPS. After curve fitting of the aluminium peak (A1 2p) and oxygen peak (0 1s) recorded at high energy resolution, and correction of charging effects, residual energy shifts between the spectra can be observed. This could be attributed to differences in the Fermi energy values between the treated aluminium surfaces. A classification based on this parameter of the relative Lewis acid-base character of these treated surfaces is proposed. The evolution of this parameter after exposure of the treated samples to a moist environment was also studied.

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Structure–property relationships for novel wholly aromatic polyamide–hydrazides containing various proportions of para-phenylene and meta-phenylene units—V: Evaluation of the electrical surface conductivity of several metallized plastic films

Mohamed

2007

Polymer Testing

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Study of aluminium bonded joints by analytical electron microscopy: Microstructural changes with aging

Cited by 5 publications

References 0 publications

High-performance wholly aromatic polyamide–hydrazides

High-performance wholly aromatic polyamide–hydrazides

X‐ray photoelectron spectroscopy study of aluminium surfaces prepared by anodizing processes

Structure–property relationships for novel wholly aromatic polyamide–hydrazides containing various proportions of para-phenylene and meta-phenylene units—V: Evaluation of the electrical surface conductivity of several metallized plastic films

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