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  <record>
    <language>eng</language>
    
      <publisher>Oriental Scientific Publishing Company</publisher>
    
    <journalTitle>Material Science Research India</journalTitle>
    
      <issn>0973-3469</issn>
    
    
    <publicationDate>2015-11-23</publicationDate>
    

        <volume>12</volume>

        <issue>2</issue>

 

    <startPage>112</startPage>
    <endPage>126</endPage>

   
      <doi></doi>
    
    <publisherRecordId>3726</publisherRecordId>
    <documentType>article</documentType>
    <title language="eng">Electroanalytical Study on the Corrosion Behaviour of Tio2 Particulate Reinforced Al 6061 Composites</title>

    <authors>
	 


      <author>
       <name>H C Ananda Murthy</name>

 
		

	<affiliationId>1</affiliationId>
      </author>
    


	


	


	



	



	

    </authors>
    
	    <affiliationsList>
	    
		

		<affiliationName affiliationId="1">Department of Chemistry, School of Physical Sciences, College of Natural and Mathematical Sciences, The University of Dodoma, P.O. Box 259, Dodoma, Tanzania, East Africa.</affiliationName>
    


		

		

		

		

		

	  </affiliationsList>







    <abstract language="eng"><p>Aluminium matrix composites reinforced with ceramic particulates, have significant applications in the field of aerospace, marine, automobiles, sports and recreation. In the present investigation, the corrosion behaviour of Al 6061-TiO<sub>2 </sub>particulate composites prepared by liquid metallurgy, has been studied in chloride, nitrate and sulphate media using electroanalytical techniques such as Tafel, Cyclic polarization and Impedance (EIS) measurements. Surface morphology of the sample electrodes was examined using Scanning electron micrography (SEM) and Energy dispersive x-ray (EDX) analysis methods. To confirm the inclusion of TiO<sub>2</sub> particulates in the matrix alloy and identify the alloying elements and intermetallic compounds in the Al 6061 composites, XRD technique was used. The polarization studies indicate an increase in the corrosion resistance in composites compared to the matrix alloy. The results from all the media studied indicates that the relative degree of corrosion follows the order Cl¯ &gt; NO<sub>3</sub><sup>¯̶</sup> &gt; SO<sub>4</sub><sup>2</sup>¯. The EIS study reveal that the polarisation resistance (R<sub>p</sub>) increase with increase in TiO<sub>2</sub> content in composites confirming improved corrosion resistance in composites. The observed increase in corrosion resistance of TiO<sub>2</sub> particulate reinforced composites is believed to be due to the action of TiO<sub>2 </sub>as physical barrier to the initiation and development of pitting corrosion, modifying the microstructure of matrix. The intermetallic phases AlFeSi rich and Mg<sub>2</sub>Si formed, being conductive act as anodic to Al matrix and become the preferable sites for initial localised attack thus causing pits.</p></abstract>

    <fullTextUrl format="html">https://www.materialsciencejournal.org/vol12no2/electroanalytical-study-on-the-corrosion-behaviour-of-tio2-particulate-reinforced-al-6061-composites/</fullTextUrl>




      <keywords language="eng">
        <keyword>Al6061 Composites</keyword>
      </keywords>


      <keywords language="eng">
        <keyword> TiO2 particulates</keyword>
      </keywords>


      <keywords language="eng">
        <keyword> Polarisation</keyword>
      </keywords>


      <keywords language="eng">
        <keyword> SEM</keyword>
      </keywords>


      <keywords language="eng">
        <keyword> Corrosion resistance</keyword>
      </keywords>

  </record>

</records>