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Deposition of hybrid 3-GPTMS's film on AA2024-T3: Dependence of film morphology and protectiveness performance on coating conditions

Progress in Organic Coatings

M.F. Montemor — 2012 — Elsevier BV

Key information

Authors:

M.F. Montemor (Maria de Fátima Grilo da Costa Montemor)

Published in

February 2012

Abstract

This paper describes the elaboration of 3-glycidoxypropyltrimethoxysilane (3-GPTMS) films onto AA2024-T3 aluminum alloy for corrosion protection. The dependence of solgel morphology on both precipitation under cathodic polarization and nitrate incorporation was investigated via scanning electron microscopy (SEM). Once added into silanization solution, sodium nitrate promoted the reaction of silane condensation and enhanced the film compactness. Electrochemical impedance spectroscopy results (EIS) indicated that doping silane film with NaNO3 ameliorated its barrier property and protectiveness. Silane films applied onto AA2024-T3 surface by using potentiostatic method, exhibited obviously higher corrosion resistance than those obtained by conventional dip-coating method. The resistance of coating is accentuated when not very negative potential was applied.

Publication details

Authors in the community:

Publication version

VoR - Version of Record

Publisher

Elsevier BV

Title of the publication container

Progress in Organic Coatings

First page or article number

264

Last page

271

Volume

73

Issue

2-3

ISSN

0300-9440

DOI

10.1016/j.porgcoat.2011.11.019

Fields of Science and Technology (FOS)

chemical-sciences - Chemical sciences

Keywords

  • Materials Chemistry
  • Organic Chemistry
  • Surfaces, Coatings and Films
  • General Chemical Engineering

Publication language (ISO code)

eng - English

Rights type:

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