Alloying effect on K-shell fluorescence parameters of porous NiTi shape memory alloys

Cengiz E., Ozkendir O., Kaya M., TIRAŞOĞLU E., KARAHAN İ. H., Kimura S., ...Daha Fazla

Journal of Electron Spectroscopy and Related Phenomena, cilt.192, ss.55-60, 2014 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 192
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.elspec.2014.01.002
  • Dergi Adı: Journal of Electron Spectroscopy and Related Phenomena
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.55-60
  • Anahtar Kelimeler: Alloying effect, Intensity ratio, Porous NiTi alloy, Production cross-section
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

The Kα,β shell production cross-sections and K β/Kα intensity ratios of porous Ni -49 at% Ti shape memory alloys were determined using energy dispersive X-ray fluorescence (EDXRF) technique. Also, the alloying effect on the K shell fluorescence parameters was investigated. The samples were excited by 59.5 keV γ-rays from an 241Am annular radioactive source. The K X-rays emitted by the samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. The structure analyses of the samples were also made using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The deviations between the present results and theoretical values, calculated for pure Ti and Ni, were attributed to charge transfer phenomena and/or rearrangement of valance shell electrons and porosity. © 2014 Elsevier B.V.