Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas

In the last 30 years, zinc plating had remarkable development due to the increasing demand for coatings with better corrosion resistance from the automotive industry. Hexavalent chromium compounds have been used to create conversion layers on zinc providing better anticorrosive protection as well as...

Descripción completa

Detalles Bibliográficos
Autores principales: Tomachuk, C., Elsner, Cecilia Inés, Di Sarli, Alejandro Ramón
Formato: Objeto de conferencia
Lenguaje:Portugués
Publicado: 2012
Materias:
Química
Corrosão
Revestimento
Zinco
Polímero
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119098
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119098
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Portugués
topic Química
Corrosão
Revestimento
Zinco
Polímero
spellingShingle Química
Corrosão
Revestimento
Zinco
Polímero
Tomachuk, C.
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
topic_facet Química
Corrosão
Revestimento
Zinco
Polímero
description In the last 30 years, zinc plating had remarkable development due to the increasing demand for coatings with better corrosion resistance from the automotive industry. Hexavalent chromium compounds have been used to create conversion layers on zinc providing better anticorrosive protection as well as anchorage properties to painting systems. However, new and more severe environmental regulations impose elimination of these compounds on electrolytes for electroplating and passivation baths and its replacement by environmentally friendly products. In this work, the surface characteristics and electrochemical behavior of a zinc coating added with silicate nanoparticles included in a polymeric matrix were investigated with the aim of evaluating its effectiveness against corrosion. Then, to improve the coating protective properties a barrier waterborne polyurethane film was applied. The characteristics of the dried polymer film (such as adhesion metal/polymer, porosity, rusting degrees and blistering) were investigated using standardized tests while the corrosion resistance was evaluated by means of electrochemical techniques in solution 0.05 mol/L NaCl. The incorporation of silicate nanoparticles include in a polymeric matrix in the zinc coating provided good adhesion of the coating system without the need of applying an application of the passivation layer on the zinc coating.
format Objeto de conferencia
Objeto de conferencia
author Tomachuk, C.
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author_facet Tomachuk, C.
Elsner, Cecilia Inés
Di Sarli, Alejandro Ramón
author_sort Tomachuk, C.
title Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
title_short Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
title_full Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
title_fullStr Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
title_full_unstemmed Avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
title_sort avaliação dos revestimentos de zinco com incorporação de partículas poliméricas
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/119098
work_keys_str_mv AT tomachukc avaliacaodosrevestimentosdezincocomincorporacaodeparticulaspolimericas
AT elsnerceciliaines avaliacaodosrevestimentosdezincocomincorporacaodeparticulaspolimericas
AT disarlialejandroramon avaliacaodosrevestimentosdezincocomincorporacaodeparticulaspolimericas
bdutipo_str Repositorios
_version_ 1764820447914885120

Ejemplares similares