Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate

The use of classic anticorrosive pigments is becoming more and more restricted by increasing environmental concerns; they are gradually being replaced by zinc phosphate and related compounds. Other anticorrosive pigments such as surface-exchanged silicas were also proposed. The object of this resear...

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Autores principales: Del Amo, Delia Beatriz, Romagnoli, Roberto, Vetere, Vicente Francisco
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Ingeniería Química
Corrosión
Pinturas
pigmentos
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/174967
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-174967
record_format dspace
spelling I19-R120-10915-1749672024-12-17T04:19:18Z http://sedici.unlp.edu.ar/handle/10915/174967 Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate Del Amo, Delia Beatriz Romagnoli, Roberto Vetere, Vicente Francisco 1999 2024-12-16T18:21:28Z en Ingeniería Química Corrosión Pinturas pigmentos The use of classic anticorrosive pigments is becoming more and more restricted by increasing environmental concerns; they are gradually being replaced by zinc phosphate and related compounds. Other anticorrosive pigments such as surface-exchanged silicas were also proposed. The object of this research is to study the anticorrosive properties of calcium acid phosphate as an inhibitive pigment, introducing a careful selection of complementary pigments in order to achieve an efficient anticorrosive protection. Several alkyd paints were prepared and evaluated through accelerated and electrochemical tests. The nature of the passive film formed was also studied. Paint containing zinc oxide and calcium carbonate (50/50) as complementary pigments showed the best performance in the salt spray test. Zinc oxide and calcium carbonate decreased film permeability and improved steel passivation. The passive film was composed of ferric oxyhydroxide, the pores of which became plugged by ferric phosphate. Centro de Investigación y Desarrollo en Tecnología de Pinturas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 2310-2314
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería Química
Corrosión
Pinturas
pigmentos
spellingShingle Ingeniería Química
Corrosión
Pinturas
pigmentos
Del Amo, Delia Beatriz
Romagnoli, Roberto
Vetere, Vicente Francisco
Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
topic_facet Ingeniería Química
Corrosión
Pinturas
pigmentos
description The use of classic anticorrosive pigments is becoming more and more restricted by increasing environmental concerns; they are gradually being replaced by zinc phosphate and related compounds. Other anticorrosive pigments such as surface-exchanged silicas were also proposed. The object of this research is to study the anticorrosive properties of calcium acid phosphate as an inhibitive pigment, introducing a careful selection of complementary pigments in order to achieve an efficient anticorrosive protection. Several alkyd paints were prepared and evaluated through accelerated and electrochemical tests. The nature of the passive film formed was also studied. Paint containing zinc oxide and calcium carbonate (50/50) as complementary pigments showed the best performance in the salt spray test. Zinc oxide and calcium carbonate decreased film permeability and improved steel passivation. The passive film was composed of ferric oxyhydroxide, the pores of which became plugged by ferric phosphate.
format Articulo
Articulo
author Del Amo, Delia Beatriz
Romagnoli, Roberto
Vetere, Vicente Francisco
author_facet Del Amo, Delia Beatriz
Romagnoli, Roberto
Vetere, Vicente Francisco
author_sort Del Amo, Delia Beatriz
title Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
title_short Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
title_full Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
title_fullStr Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
title_full_unstemmed Steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
title_sort steel corrosion protection by means of alkyd paints pigmented with calcium acid phosphate
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/174967
work_keys_str_mv AT delamodeliabeatriz steelcorrosionprotectionbymeansofalkydpaintspigmentedwithcalciumacidphosphate
AT romagnoliroberto steelcorrosionprotectionbymeansofalkydpaintspigmentedwithcalciumacidphosphate
AT veterevicentefrancisco steelcorrosionprotectionbymeansofalkydpaintspigmentedwithcalciumacidphosphate
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