<?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>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612022000100021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[CORROSIÓN LOCALIZADA EN FLOTADORES DEL SISTEMA DE MEMBRANA EN TANQUE UTILIZADO PARA EL ALMACENAMIENTO DE GASOLINA DE AVIACIÓN]]></article-title>
<article-title xml:lang="en"><![CDATA[LOCALIZED CORROSION IN FLOATS OF THE TANK MEMBRANE SYSTEM USED FOR AVIATION GASOLINE STORAGE]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Llovet de Armas]]></surname>
<given-names><![CDATA[Nelson Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera Beltrán]]></surname>
<given-names><![CDATA[Yichsy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación del Petróleo (CEINPET)  ]]></institution>
<addr-line><![CDATA[Cerro La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>49</volume>
<numero>1</numero>
<fpage>21</fpage>
<lpage>30</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612022000100021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612022000100021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612022000100021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Un tanque utilizado para el almacenamiento de gasolina de aviación provisto de un domo geodésico con sistema de membrana interna flotante, reportó graves daños por corrosión en sus flotadores, lo que motivó que fueran sustituidos en un breve período.  Objetivo: Analizar las causas del deterioro de los flotadores de aluminio.  Materiales y Métodos: Durante la inspección visual se colectaron productos de corrosión que se analizaron por espectrometría IR. Se tomaron muestras del agua residual del fondo del tanque para su análisis fisicoquímico. Se realizó el estudio estructural a los materiales componentes del flotador, utilizando un espectrómetro multicanal digital y un microscopio metalográfico.  Resultados y Discusión: Las fallas en los flotadores se presentaron en el cuerpo cilíndrico en contacto con el combustible, como una corrosión del tipo localizada. El material corroído se correspondió con la aleación de aluminio manganeso 3004, que se caracterizó por un contenido importante de hierro en su composición química y una microestructura con alta densidad de partículas intermetálicas, en algunas microlocalizaciones formando clústeres. Se observaron cavidades en torno a algunas partículas, y evidencia de la disolución de la matriz de la aleación en un medio en el que estuvieron presentes iones cloruros.  Conclusiones: Los resultados obtenidos indicaron que en un medio con presencia de iones cloruros se suscitó la formación de microceldas galvánicas entre partículas intermetálicas catódicas de dimensiones importantes y la matriz de la aleación, lo que propició la formación de picaduras profundas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: A tank used for the storage of aviation gasoline, equipped with a geodesic dome with a floating internal membrane system, reported serious corrosion damage to its floats, which caused them to be replaced in a short period of time.  Objective: To analyze aluminum floats deterioration causes.  Materials and Methods: During a visual inspection, corrosion products were collected and analyzed by IR spectrometry. Residual water samples were taken from the tank bottom for physicochemical analysis. Float component materials structural study was carried out, using a digital multichannel spectrometer and a metallographic microscope.  Results and Discussion: Float failures occurred in cylindrical body in contact with the fuel, such as localized corrosion. The corroded material corresponded to the aluminum manganese alloy 3004, which was characterized by an important content of iron in its chemical composition and a microstructure with high density of intermetallic particles, in some micro locations forming clusters. Cavities were observed around some particles, and evidence of dissolution of the alloy matrix in a medium in which chloride ions were present.  Conclusions: The results obtained indicated that in a medium with the presence of chloride ions, the formation of galvanic microcells between cathodic intermetallic particles of important dimensions and the alloy matrix was caused, which led to the formation of deep pits.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aleación de aluminio]]></kwd>
<kwd lng="es"><![CDATA[cloruros]]></kwd>
<kwd lng="es"><![CDATA[corrosión]]></kwd>
<kwd lng="es"><![CDATA[partículas intermetálicas]]></kwd>
<kwd lng="en"><![CDATA[aluminium alloy]]></kwd>
<kwd lng="en"><![CDATA[chlorides]]></kwd>
<kwd lng="en"><![CDATA[corrosion]]></kwd>
<kwd lng="en"><![CDATA[intermetallic particles]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<collab>APHA-AWWA-WEF</collab>
<source><![CDATA[Standard Methods for examination of water and wastewater]]></source>
<year>2017</year>
<edition>23</edition>
<page-range>2-197</page-range><publisher-loc><![CDATA[Washington-United States of America ]]></publisher-loc>
<publisher-name><![CDATA[American Public Health Association]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<collab>ASTM</collab>
<source><![CDATA[Standard guide for preparation of metallographic specimens]]></source>
<year>2017</year>
<page-range>1-12</page-range><publisher-loc><![CDATA[United States of America ]]></publisher-loc>
<publisher-name><![CDATA[American Society for Testing and Materials (ASTM)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<collab>ASTM</collab>
<source><![CDATA[Standard practice for microetching metals and alloys]]></source>
<year>2015</year>
<page-range>1-22</page-range><publisher-loc><![CDATA[United States of America ]]></publisher-loc>
<publisher-name><![CDATA[American Society for Testing and Materials (ASTM)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dugarte]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Prada]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Godoy]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Valero]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estudio de la corrosión por picadura de la aleación comercial de aluminio AA3003 en medio ambiente salino]]></article-title>
<source><![CDATA[Revista Técnica de la Facultad de Ingeniería]]></source>
<year>2007</year>
<volume>30</volume>
<page-range>168-77</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Groysman]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Corrosion for Everybody]]></source>
<year>2010</year>
<page-range>44-7</page-range><publisher-loc><![CDATA[Germany ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Springer + Business Media B.V]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Groysman]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Corrosion in systems for storage and transportation of Petroleum products and biofuels: identification, monitoring and solutions]]></source>
<year>2014</year>
<page-range>13-6</page-range><publisher-loc><![CDATA[Germany ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Springer + Business Media Dordrecht]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<collab>ISO</collab>
<source><![CDATA[Water quality-Determination of Chlorides-Silver Nitrate Titration with chromate indicator (Mohr&#712;s Method)]]></source>
<year>2021</year>
<page-range>1-4</page-range><publisher-loc><![CDATA[Geneva, Switzerland ]]></publisher-loc>
<publisher-name><![CDATA[Switzerland International Organization for Standardization (ISO)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reboult]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Warner]]></surname>
<given-names><![CDATA[T.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Mayet]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Baroux]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A ten step mechanism for the pitting corrosion of aluminium alloys]]></article-title>
<source><![CDATA[Corrosion Reviews]]></source>
<year>1997</year>
<volume>15</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>471-96</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Roodbari]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Effect of microstructure on the performance of corrosion resistant alloys]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Norwegian ]]></publisher-loc>
<publisher-name><![CDATA[Norwegian University of Science and Technology]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Talbot]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Talbot]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Corrosion Science and Technology]]></source>
<year>2018</year>
<volume>1</volume>
<page-range>261-2</page-range><publisher-loc><![CDATA[Florida-United States of America ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Taylor &amp; Francis Group LLC]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vargel]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Corrosion of Aluminium]]></source>
<year>2004</year>
<page-range>81-108</page-range><publisher-loc><![CDATA[Oxford-United Kingdom ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Elsevier Ltd]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vargel]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Corrosion of Aluminium]]></source>
<year>2020</year>
<page-range>128-80</page-range><publisher-loc><![CDATA[Oxford-United Kingdom ]]></publisher-loc>
<publisher-name><![CDATA[Editorial Elsevier Ltd]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yasakau]]></surname>
<given-names><![CDATA[K.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Zheludkevich]]></surname>
<given-names><![CDATA[M.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[M.G.S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Role of intermetallics in corrosion of aluminium alloys., Smart corrosion protection]]></source>
<year>2018</year>
<page-range>437-40</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
