Corrosion behaviour of niobium in phosphate buffered saline solutions with different concentrations of bovine serum albumin

Wei Wang; Farzad Mohammadi; Akram Alfantazi

doi:10.1016/j.corsci.2011.12.039

Corrosion behaviour of niobium in phosphate buffered saline solutions with different concentrations of bovine serum albumin

Wei Wang, Farzad Mohammadi, Akram Alfantazi

Chemical and Petroleum Engineering

The University of British Columbia

Research output: Contribution to journal › Article › peer-review

99 Scopus citations

Abstract

The corrosion behaviour of Nb was studied in phosphate buffered saline (PBS) solutions at a presence of 0-6gL ^-1 bovine serum albumin (BSA). Addition of BSA to PBS solutions lowered the open circuit potential (OCP). OCP, polarization resistance and impedance increased over immersion time. The adsorption process of BSA on Nb surface was found to be faster than that of the PO ₄ ^3-. According to X-ray Photoelectron Spectroscopy (XPS) a competitive adsorption between PO ₄ ^3- and BSA was in effect during the immersion process. Based on the analysis of effective capacitances, a surface distribution of time-constants was proposed.

Original language	British English
Pages (from-to)	11-21
Number of pages	11
Journal	Corrosion Science
Volume	57
DOIs	https://doi.org/10.1016/j.corsci.2011.12.039
State	Published - Apr 2012

Keywords

A. Niobium
B. EIS
B. Polarization
B. XPS

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10.1016/j.corsci.2011.12.039

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title = "Corrosion behaviour of niobium in phosphate buffered saline solutions with different concentrations of bovine serum albumin",

abstract = "The corrosion behaviour of Nb was studied in phosphate buffered saline (PBS) solutions at a presence of 0-6gL -1 bovine serum albumin (BSA). Addition of BSA to PBS solutions lowered the open circuit potential (OCP). OCP, polarization resistance and impedance increased over immersion time. The adsorption process of BSA on Nb surface was found to be faster than that of the PO 4 3-. According to X-ray Photoelectron Spectroscopy (XPS) a competitive adsorption between PO 4 3- and BSA was in effect during the immersion process. Based on the analysis of effective capacitances, a surface distribution of time-constants was proposed.",

keywords = "A. Niobium, B. EIS, B. Polarization, B. XPS",

author = "Wei Wang and Farzad Mohammadi and Akram Alfantazi",

note = "Funding Information: The Authors would like to thank the Natural Sciences and Engineering Research Council of Canada (NSERC) for the financial support.",

year = "2012",

month = apr,

doi = "10.1016/j.corsci.2011.12.039",

language = "British English",

volume = "57",

pages = "11--21",

journal = "Corrosion Science",

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T1 - Corrosion behaviour of niobium in phosphate buffered saline solutions with different concentrations of bovine serum albumin

AU - Wang, Wei

AU - Mohammadi, Farzad

AU - Alfantazi, Akram

N1 - Funding Information: The Authors would like to thank the Natural Sciences and Engineering Research Council of Canada (NSERC) for the financial support.

PY - 2012/4

Y1 - 2012/4

N2 - The corrosion behaviour of Nb was studied in phosphate buffered saline (PBS) solutions at a presence of 0-6gL -1 bovine serum albumin (BSA). Addition of BSA to PBS solutions lowered the open circuit potential (OCP). OCP, polarization resistance and impedance increased over immersion time. The adsorption process of BSA on Nb surface was found to be faster than that of the PO 4 3-. According to X-ray Photoelectron Spectroscopy (XPS) a competitive adsorption between PO 4 3- and BSA was in effect during the immersion process. Based on the analysis of effective capacitances, a surface distribution of time-constants was proposed.

AB - The corrosion behaviour of Nb was studied in phosphate buffered saline (PBS) solutions at a presence of 0-6gL -1 bovine serum albumin (BSA). Addition of BSA to PBS solutions lowered the open circuit potential (OCP). OCP, polarization resistance and impedance increased over immersion time. The adsorption process of BSA on Nb surface was found to be faster than that of the PO 4 3-. According to X-ray Photoelectron Spectroscopy (XPS) a competitive adsorption between PO 4 3- and BSA was in effect during the immersion process. Based on the analysis of effective capacitances, a surface distribution of time-constants was proposed.

KW - A. Niobium

KW - B. EIS

KW - B. Polarization

KW - B. XPS

UR - http://www.scopus.com/inward/record.url?scp=84862809227&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2011.12.039

DO - 10.1016/j.corsci.2011.12.039

M3 - Article

AN - SCOPUS:84862809227

SN - 0010-938X

VL - 57

SP - 11

EP - 21

JO - Corrosion Science

JF - Corrosion Science

ER -

Corrosion behaviour of niobium in phosphate buffered saline solutions with different concentrations of bovine serum albumin

Abstract

Keywords

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