Passivity characteristics on Ni (Cr) (Fe) SiB glassy alloys in phosphate solution
Joint Authors
Arab, Sana T.
Umran, Khadijah M.
al-Tarif, Hamad A.
Source
Journal of Saudi Chemical Society
Issue
Vol. 18, Issue 3 (31 Jul. 2014), pp.169-182, 14 p.
Publisher
Publication Date
2014-07-31
Country of Publication
Saudi Arabia
No. of Pages
14
Main Subjects
Abstract EN
Passivity characteristics of three nickel-metalloids glassy alloys (Ni92.3Si4.5B32, Ni82.3Cr7- Fe3Si4.5B3.2 and Ni75.5Cr13Fe4.2Si4.5B2.8) and the immersion time effect on the corrosion resistance were carried out by AC and DC electrochemical methods and SEM and XPS analyses.
The study also focused on the effect of H3PO4 concentration and its role on the corrosion rate, passivation ability of nickel base glassy alloys surface.
The present investigation revealed (i) corrosion resistance of Cr-free alloy shows pseudo passivity at all examined H3PO4 concentrations, (ii) high corrosion resistance of Cr contains alloys due to the formation of protective layer of chromium oxyhydroxide on the surface which acts as a diffusion barrier against alloy dissolution, (iii) the negative resistance observed in the case Ni75.5Cr13Fe4.2Si4.5B2.8 alloy revealed the sudden transition of metal/solution interface from a state of active dissolution to the passive state.-
American Psychological Association (APA)
Arab, Sana T.& Umran, Khadijah M.& al-Tarif, Hamad A.. 2014. Passivity characteristics on Ni (Cr) (Fe) SiB glassy alloys in phosphate solution. Journal of Saudi Chemical Society،Vol. 18, no. 3, pp.169-182.
https://search.emarefa.net/detail/BIM-386956
Modern Language Association (MLA)
Arab, Sana T.…[et al.]. Passivity characteristics on Ni (Cr) (Fe) SiB glassy alloys in phosphate solution. Journal of Saudi Chemical Society Vol. 18, no. 3 (Jul. 2014), pp.169-182.
https://search.emarefa.net/detail/BIM-386956
American Medical Association (AMA)
Arab, Sana T.& Umran, Khadijah M.& al-Tarif, Hamad A.. Passivity characteristics on Ni (Cr) (Fe) SiB glassy alloys in phosphate solution. Journal of Saudi Chemical Society. 2014. Vol. 18, no. 3, pp.169-182.
https://search.emarefa.net/detail/BIM-386956
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p.182
Record ID
BIM-386956