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Determinación de espesor y uniformidad de cubiertas metálicas

Authors: Vetere, Vicente; Florit, María Inés;

Determinación de espesor y uniformidad de cubiertas metálicas

Abstract

The determination of thickness and uniformity are very important tests destinated to evaluate the protective efficiency of a metallic coating. The determination of thickness is based on the anodic dissolution to a constant current density and on the determination of the time which passes to the moment when a potential variation is obtained. A general system has been devised which permits to establish the necessary conditions in the determination of the thickness of the film obtained by a coulombimetric technique . Uniformity tests have been done by means of a chemical va- loration of the dissolved ion, coming from the metal, after the application of an anodic current to the protective coating.

Las determinaciones de espesor y uniformidad son de fundamental importancia para evaluar la eficiencia protectora de un recubrimiento metálico. La determinación del espesor se fundamenta en la disolución anódica a densidad de corriente constante, y en la medición del tiempo que transcurre hasta que se produce una variación de potencial. Se ha diseñado un sistema general que permite deducir en qué condiciones es posible la determinación del espesor, mediante una técnica culombimétrica. Los ensayos de uniformidad se han realizado mediante la valoración química del hierro disuelto, proveniente del metal de base, luego de aplicar al recubrimiento protector una corriente anódica.

Keywords

Ingeniería de los Materiales

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green