<?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>0122-3461</journal-id>
<journal-title><![CDATA[Ingeniería y Desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. Desarro.]]></abbrev-journal-title>
<issn>0122-3461</issn>
<publisher>
<publisher-name><![CDATA[Fundación Universidad del Norte]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-34612017000100018</article-id>
<article-id pub-id-type="doi">10.14482/inde.35.1.8941</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Resistencia a la corrosión de recubrimientos de Cr 2 O 3 medida mediante EIE]]></article-title>
<article-title xml:lang="en"><![CDATA[Corrosión resistance of Cr2O3 coatings measured through EIS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dimate Castellanos]]></surname>
<given-names><![CDATA[Laura Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olaya Flórez]]></surname>
<given-names><![CDATA[Jhon Jairo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfonso Orjuela]]></surname>
<given-names><![CDATA[José Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Ingeniería Mecánica y Mecatrónica ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Departamento de Ingeniería Mecánica y Mecatrónica ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universi dad Nacional de Colombia Departamento de Física ]]></institution>
<addr-line><![CDATA[Bogotá D.C]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<fpage>18</fpage>
<lpage>37</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-34612017000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-34612017000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-34612017000100018&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este trabajo se presentan los resultados de la resistencia a la corrosión de recubrimientos comerciales de óxido de cromo (Cr2O3) depositados por proyección térmica sobre sustratos de bronce fosforado, modificados superficialmente mediante tres métodos: granallado con arena, granallado metálico con alúmina y pulimento con disco abrasivo y con preparación de superficie (con capa y sin capa base). La rugosidad de los recubri mientos depositados se determinó mediante microscopia confocal y la morfología de la superficie se evaluó mediante microscopía electrónica de barrido (MEB); la estructura cristalográfica se determinó por medio de difracción de rayos X (DRX) y la resistencia a la corrosión se evaluó por medio de espectroscopia de impedancia electroquímica (EIE). Los resultados de microscopia confocal mostraron que la rugosidad superficial tiene un máximo valor de 19,831um; el análisis de DRX mostró que los recubrimientos tienen la misma estructura cristalográfica de los polvos; el análisis de MEB muestra que la superficie es porosa y no es homogénea. Finalmente, los resultados de EIE revelan que las superficies preparadas con granallado presentaron la mejor resistencia a la corrosión.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper present the results of corrosion resistance of commercial coatings of chromium oxide Cr2O3 deposited by thermal spray on phosphor bronze substrates with three methods of surface preparation: shot blasting with sand, blasting metal with alumina and polishing with abrasive disc, the three surfaces were prepared with and without base layer. The roughness of the deposited coatings was determined by confocal microscopy and the surface morphology was assessed by scanning electron microscopy (SEM); the crystal structure was determined by X-ray diffraction (XRD) and the corrosion resistance was evaluated via electrochemical impedance spectroscopy (EIS). The results of confocal microscopy showed that the surface roughness has a maximum value of 19,831 &#956;m; XRD analysis showed that the coatings have the same crystal structure of the powders; SEM analysis shows that the surface is porous and inhomogeneous. Fi nally, the EIS results, reveal that prepared surface with blasting had the best corrosion resistance.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[impedancia]]></kwd>
<kwd lng="es"><![CDATA[granallado]]></kwd>
<kwd lng="es"><![CDATA[óxido de cromo]]></kwd>
<kwd lng="es"><![CDATA[proyección térmica]]></kwd>
<kwd lng="es"><![CDATA[resistencia a la corrosión.]]></kwd>
<kwd lng="en"><![CDATA[chromium oxide]]></kwd>
<kwd lng="en"><![CDATA[corrosion resistance]]></kwd>
<kwd lng="en"><![CDATA[impedance]]></kwd>
<kwd lng="en"><![CDATA[sand blasting]]></kwd>
<kwd lng="en"><![CDATA[thermal spray.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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