Paper Title:
SEM and XRD Characterization of Ni-Hf Alloys at Low Hf Concentration
  Abstract

The alloying and phase formation in Ni-Hf samples with 0.2-, 2-, and 5-at.% Hf were studied by X-ray diffraction (XRD) technique and scanning electron microscopy (SEM). Both characterization methods, XRD and SEM, reveal the presence of the HfNi5 phase (fcc structure) where the excess Ni atoms are present in the form of Ni or Ni-rich segregations in the sample containing 5-at.% Hf. The sample with 2-at.% Hf is characterized by the presence of the two phases present in the 5-at.% sample and by Hf atoms, which occupy substitutional lattice positions in the Ni lattice. Finally, in the third sample with 0.2-at.% Hf, the Hf atoms mainly substitute the Ni atoms in the lattice. This analysis is being complemented with additional information on the local structure around Hf by extended X-ray absorption fine structure spectroscopy (EXAFS).

  Info
Periodical
Edited by
Dragan P. Uskokovic, Slobodan K. Milonjic and Dejan I. Rakovic
Pages
325-330
DOI
10.4028/www.scientific.net/MSF.518.325
Citation
A. Umićević, H.E. Mahnke, B. Cekić, J. Grbović Novaković, V. Koteski, J. Belošević-Čavor, "SEM and XRD Characterization of Ni-Hf Alloys at Low Hf Concentration", Materials Science Forum, Vol. 518, pp. 325-330, 2006
Online since
July 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jian Ying Gao, Wan Jiang, Gang Wang
Abstract:A combustion front quenching (CFQ) technique was used to investigate the mechanism of selfpropagating high-temperature synthesis (SHS) of...
1467
Authors: Tae Ho Shin, Ji Heang Yu, Shi Woo Lee, In Sub Han, Sang Kuk Woo, Byung Koog Jang, Sang Hoon Hyun
Abstract:This paper presents the work on the development of ceramic coating processing. Nano-structured zirconia coating has been developed with...
505
Authors: El-Sayed Ghaith, Toshihiro Kasuga, Masayuki Nogami
Abstract:Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium...
235
Authors: Liu Zhi, Yan Song, Li Ping Deng, Xing Hai Liu
Abstract:α-MoO3 microspheres assembled by nanorods were synthesized in room temperature ionic liquids (bmimBF4:...
2008
Authors: Hong Wang, Yan Jie, Hong Luo, Xue Feng
Abstract:Monodisperse α-Fe2O3 nanoparticles with average particle size of 110 nm were successfully prepared using...
1814