1 Ocak 2013 Dergi makalesi Açık Erişim

Kok, Mediha; Pirge, Gursev; Aydogdu, Yildirim

MARC21 XML

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="p">user-tubitak-destekli-proje-yayinlari</subfield>
    <subfield code="o">oai:zenodo.org:12971</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">Oxidation behavior of NiMnGa alloy has been investigated under isothermal temperature by thermo gravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy equipped with an energy dispersive X-ray (SEM-EDX) spectroscope systems. The Ni-28.5Mn-20.5Ga alloy (composition in atomic percent) was exposed to oxygen atmosphere isothermally, i.e., between 600 degrees C and 1000 degrees C, for 1 h. A gravimetric method was used to determine the oxidation kinetics; weight gain per unit area as a function of time. It was determined that the oxidation constant increases significantly with isothermal temperature. Activation energy of the oxidation was found to be 152 kJ/mol. X-ray diffraction patterns of the heat-treated samples contain oxide peaks, mainly belonging to Mn3O4. X-ray analyses demonstrate that the amount of the oxide increases with isothermal temperature while that of martensite phase decreases. The scanning electron microscopy equipped with an energy dispersive X-ray (SEM-EDX) spectroscope analysis also gives the same result. According to magnetic measurements, the saturation of NiMnGa alloys decreases with rising isothermal oxidation temperature. (C) 2012 Elsevier B. V. All rights reserved.</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">publication</subfield>
    <subfield code="b">article</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="a">Creative Commons Attribution</subfield>
    <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="a">Kok, Mediha</subfield>
    <subfield code="u">Firat Univ, Dept Phys, Fac Sci, TR-23169 Elazig, Turkey</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="z">md5:bc2d172c3fb7af2df7453b8463a41cd8</subfield>
    <subfield code="s">178</subfield>
    <subfield code="u">https://aperta.ulakbim.gov.trrecord/12971/files/bib-6c6a1ee3-09d7-4bcb-99eb-8cc94a2f07c0.txt</subfield>
  </datafield>
  <controlfield tag="005">20210315080021.0</controlfield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2013-01-01</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.1016/j.apsusc.2012.12.033</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Isothermal oxidation study on NiMnGa ferromagnetic shape memory alloy at 600-1000 degrees C</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="4">
    <subfield code="v">268</subfield>
    <subfield code="c">136-140</subfield>
    <subfield code="p">APPLIED SURFACE SCIENCE</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="a">cc-by</subfield>
    <subfield code="2">opendefinition.org</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="a">Pirge, Gursev</subfield>
    <subfield code="u">Turkish AF Acad, Inst Aeronaut &amp; Space Technol, Istanbul, Turkey</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="a">Aydogdu, Yildirim</subfield>
    <subfield code="u">Gazi Univ, Fac Sci, Dept Phys, Ankara, Turkey</subfield>
  </datafield>
  <controlfield tag="001">12971</controlfield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-tubitak-destekli-proje-yayinlari</subfield>
  </datafield>
</record>