1 Ocak 2023 Dergi makalesi Açık Erişim

Aydogmus, Demet; Duygulu, Ozgur; Sahin, Filiz Cinar

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/265104</identifier>
  <creators>
    <creator>
      <creatorName>Aydogmus, Demet</creatorName>
      <givenName>Demet</givenName>
      <familyName>Aydogmus</familyName>
      <affiliation>Istanbul Tech Univ, Met &amp; Mat Engn Dept, TR-34469 Maslak, Turkiye</affiliation>
    </creator>
    <creator>
      <creatorName>Duygulu, Ozgur</creatorName>
      <givenName>Ozgur</givenName>
      <familyName>Duygulu</familyName>
      <affiliation>Tubitak Marmara Res Ctr, TR-41470 Kocaeli, Turkiye</affiliation>
    </creator>
    <creator>
      <creatorName>Sahin, Filiz Cinar</creatorName>
      <givenName>Filiz Cinar</givenName>
      <familyName>Sahin</familyName>
      <affiliation>Istanbul Tech Univ, Met &amp; Mat Engn Dept, TR-34469 Maslak, Turkiye</affiliation>
    </creator>
  </creators>
  <titles>
    <title>In-Situ Spark Plasma Sintering Behavior Of La2O3-Y2O3 Co-Doped Alon Ceramics: An Attempt To Prevent Carbon Contamination</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2023</publicationYear>
  <dates>
    <date dateType="Issued">2023-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/265104</alternateIdentifier>
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  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.jmrt.2023.10.047</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Un-doped and La2O3-Y2O3 co-doped Aluminum oxynitride (AlON) ceramics were fabricated by reactive spark plasma sintering method (R-SPS) by using Al2O3 and AlN as starting powders with a composition of 70 mol% and 30 mol%, respectively. The effects of co doping system on densification, microstructure, mechanical properties and optical transmittance of AlON ceramics were investigated. X-ray analysis confirmed the fully transformation of g-AlON phase for all compositions prepared at 1650 degrees C in 30 min under 40 MPa under nitrogen. The results indicated that 0.02 wt% La2O3 thorn 0.08 wt% Y2O3 added composition had the optimal combination of sintering additives. In an attempt to reduce the graphite contamination, the powder mixture was encapsulated in a Nb-coated graphite foil before subjecting to SPS. Nb-coated graphite foil encapsulated sample was found to reduce carbon contamination leading to high densification (99.6 %) and high transmission (-81 % at 2500 nm). This study demonstrated that optical transmittance of R-SPSed AlON ceramics is significantly improved without any post-heat treatment by using Nb-coated graphite foil during SPS processing.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).&lt;/p&gt;</description>
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