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Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O2 at various temperatures by Zhen Song; Dali Tan; Fei He; Xinhe Bao is a Materials Science article available to read on EtoBox.
What is Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O2 at various temperatures about?
Variations of surface morphology and chemical composition of amorphous Ni Nb alloy after oxidation in 1 atm O at 65 35 2 Ž . temperatures from room temperature to 773 K have been investigated using scanning electron microscopy SEM , X-ray Ž . Ž . photoelectron spectroscopy XPS and Auger electron spectroscopy AES depth profile methods. Inverse segregation Ž . behaviors have been observed at two oxidation temperature ranges. At the lower temperature range F 373 K , Nb Ž . segregates at the surface as Nb O ; while at the higher temperature range G 523 K , Ni segregates at the surface as metallic 2 5 Ni and NiO. Different oxidation mechanisms have been suggested to operate in the two oxidation temperature ranges, which may be concerned with different oxidation rates of Nb and diffusion speeds of O and Ni ions in the Nb O layer at different 2 5 temperatures. The affinities of Ni and Nb to oxygen may act as the driving force of the segregation.
Who reads Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O2 at various temperatures?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Zhen Song; Dali Tan; Fei He; Xinhe Bao
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0169-4332)
- Published
- 1999
- Language
- EN
- Field
- Materials Science (Physical Sciences)