<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0872-1904</journal-id>
<journal-title><![CDATA[Portugaliae Electrochimica Acta]]></journal-title>
<abbrev-journal-title><![CDATA[Port. Electrochim. Acta]]></abbrev-journal-title>
<issn>0872-1904</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Electroquímica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0872-19042024000400255</article-id>
<article-id pub-id-type="doi">10.4152/pea.2023420402</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Electrochemical Study of the Effect of Zinc Baths with Additives on Steel Surfaces Coating by Electroplating]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[Cecilia Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Diz]]></surname>
<given-names><![CDATA[Virginia E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[Graciela Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Buenos Aires Department of Inorganic, Analytical and Physical Chemistry Faculty of Exact and Natural Sciences]]></institution>
<addr-line><![CDATA[Buenos Aires ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Buenos Aires Faculty of Exact and Natural Sciences INQUIMAE -Department of Inorganic, Analytical and Physical Chemistry]]></institution>
<addr-line><![CDATA[Buenos Aires ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2024</year>
</pub-date>
<volume>42</volume>
<numero>4</numero>
<fpage>255</fpage>
<lpage>272</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0872-19042024000400255&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0872-19042024000400255&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0872-19042024000400255&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This work presents a set of electrochemical techniques applied to investigate the effect of Zn baths with additives on steel surfaces coating by EP. The form and intensity of the reduction in I were analyzed as a function of the applied E, using LSV. In this way, different stages of the EP process involved in Zn deposition on steel surfaces, and the effect of each additive, were identified. First, commercial additives produced by a local company, with highly complex compositions, were studied to understand their Ct effects on the different stages of steel coating in Zn baths by the EP process. Based on the ability to replicate those results, C7H6O2 and Triton X-100, previously reported as brightener and leveler, respectively, were proposed as a simple additive mix. Very strong synergetic effects were present, even in this simplified bath. The effect of different additives Ct on the steel coatings grain size or morphology was also evaluated using SEM images, in the final stage. A correspondence between optimal Ct of the commercial additives and the proposed bath (1 x 10-2 M Triton X-100 and 3 x 10-9 M C7H6O2) was found. Finally, EIS experiments were carried out for the different bath compositions, with this simplified additive mix. The results were interpreted through an equivalent electrical circuit represented by Rct, with two parallel CPE, which evidenced Zn deposits inhomogeneities.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[additives in ED]]></kwd>
<kwd lng="en"><![CDATA[C7H6O2 commercial mix]]></kwd>
<kwd lng="en"><![CDATA[chemical speciation]]></kwd>
<kwd lng="en"><![CDATA[EIS]]></kwd>
<kwd lng="en"><![CDATA[EP process]]></kwd>
<kwd lng="en"><![CDATA[LSV]]></kwd>
<kwd lng="en"><![CDATA[SEM]]></kwd>
<kwd lng="en"><![CDATA[Triton X-100]]></kwd>
<kwd lng="en"><![CDATA[Zn coating]]></kwd>
</kwd-group>
</article-meta>
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