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


Cengiz E. , Ozkendir O. M. , Kaya M., TIRAŞOĞLU E. , Karahan I. H. , Kimura S., ...Daha Fazla

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, cilt.192, ss.55-60, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 192
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.elspec.2014.01.002
  • Dergi Adı: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
  • Sayfa Sayıları: ss.55-60

Özet

The K-alpha,K-beta shell production cross-sections and K-beta/K-alpha 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 key gamma-rays from an Am-241 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 key. 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. (C) 2014 Elsevier B.V. All rights reserved.