AN INVESTIGATION ON PASSIVATION OF VARIOUS HEAT TREATED NICKEL ALUMINIUM BRONZE (C95520) SPECIMENS USING LPR, EIS AND ZRA METHODS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

ALLAHKARAM S.R.; DAROONPARVAR M.R.; BEHNAMIAN M.R.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: PETROLEUM RESEARCH Year:2011 | Volume:21 | Issue:65 Page(s): 18-33

Download Full-Text

Persian Verion

View:

1,493

Download:

Cites:

Information Journal Paper

Title

AN INVESTIGATION ON PASSIVATION OF VARIOUS HEAT TREATED NICKEL ALUMINIUM BRONZE (C95520) SPECIMENS USING LPR, EIS AND ZRA METHODS

Author(s)

ALLAHKARAM S.R. | DAROONPARVAR M.R. | BEHNAMIAN M.R. | Issue Writer Certificate

Keywords

ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (ELS)Q2

LINEAR POLARISATION RESISTANCE (LPR)Q3

ELECTROCHEMHCAL NOISEQ2

PASSIVATION BEHAVIORQ3

PITTING CORROSIONQ3

SEA WATERQ2

Abstract

In this paper, heat treated Nickel Aluminium Bronze (C95520) was used as received and exposed to SEA WATER for 75 days. Metallographic investigations were carried out on exposed specimens prepared under as received and heat treated conditions in order to study their microstructures using optical microscopy (OM) and scanning electron microscopy (SEM) equipped with energy dispersive x-ray analysis (EDAX). To determine the resistance of the passive layer on specimen surfaces, an advanced and novel electrochemical noise technique via zeo resistance ammeter (ZRA) together with linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) were utilized. With respect to the passivation potentials extracted from polarization diagrams and polarization resistance (Rp) determined from Nyquist diagrams for all specimens, it was found out that the target sample was under concentration polarization effect. The target sample, coded as sample 14, was heat treated at 675 oC for 45 minutes and normalized in air. The lower starting passivation potential for the target sample indicated a better condition from passivation point of view. Data analysis of electrochemical noise measurements using an evaluation of the last measured 40 potentials and current data of the specimens exposed to SEA WATER for 75 days showed that the corrosion current for as received specimen was found to be twice that of the target specimen. According to the metallographic micrograph, the pearlitic zones in target specimens were attacked much less than similar sites in as received specimen. It was further observed that the corrosion attack on passive layer occurred on selective phases leading to PITTING CORROSION.

Cites

No record.

References

No record.

Cite

APA: Copy

ALLAHKARAM, S.R., DAROONPARVAR, M.R., & BEHNAMIAN, M.R.. (2011). AN INVESTIGATION ON PASSIVATION OF VARIOUS HEAT TREATED NICKEL ALUMINIUM BRONZE (C95520) SPECIMENS USING LPR, EIS AND ZRA METHODS. PETROLEUM RESEARCH, 21(65), 18-33. SID. https://sid.ir/paper/115057/en

Vancouver: Copy

ALLAHKARAM S.R., DAROONPARVAR M.R., BEHNAMIAN M.R.. AN INVESTIGATION ON PASSIVATION OF VARIOUS HEAT TREATED NICKEL ALUMINIUM BRONZE (C95520) SPECIMENS USING LPR, EIS AND ZRA METHODS. PETROLEUM RESEARCH[Internet]. 2011;21(65):18-33. Available from: https://sid.ir/paper/115057/en

IEEE: Copy

S.R. ALLAHKARAM, M.R. DAROONPARVAR, and M.R. BEHNAMIAN, “AN INVESTIGATION ON PASSIVATION OF VARIOUS HEAT TREATED NICKEL ALUMINIUM BRONZE (C95520) SPECIMENS USING LPR, EIS AND ZRA METHODS,” PETROLEUM RESEARCH, vol. 21, no. 65, pp. 18–33, 2011, [Online]. Available: https://sid.ir/paper/115057/en

Related Journal Papers