Padhy, N. ; Paul, Ranita ; Kamachi Mudali, U. ; Baldev Raj, (2011) Morphological and compositional analysis of passive film on austenitic stainless steel in nitric acid medium Applied Surface Science, 257 (11). pp. 5088-5097. ISSN 0169-4332
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S01694...
Related URL: http://dx.doi.org/10.1016/j.apsusc.2011.01.026
Abstract
Passive film properties of type 304L stainless steel in nitric acid medium are investigated in both ex situ and in situ conditions. Ex situ results revealed that variation in passive film morphology occurs depending upon the concentration and time of immersion. In situ surface morphological investigation showed formation of platelet like structures at lower concentrations (0.1 M, 0.5 M), and towards higher concentration (0.6 M, 1 M) the platelet like structures got agglomerated, homogenized and started depleting from the surface leading to opening up of oxide boundaries. Compositional analysis of the passive film revealed duplex nature at lower concentration consisting of hydroxide and oxide layer, and with increasing concentration oxide layer predominates over the surface.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Stainless Steel; AFM; Polarization; Passive Film; Transpassivity |
| ID Code: | 40293 |
| Deposited On: | 23 May 2011 11:37 |
| Last Modified: | 23 May 2011 11:37 |
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