The influence of albumin on the anodic dissolution of chromium present in UNSS31254 stainless steel in chloride environment

被引：20

作者：

Afonso, M. L. C. A. ^{[1
]}

Jaimes, R. F. V. Villamil ^{[1
,3
,4
]}

Areas, E. P. G. ^{[1
]}

Capri, M. R. ^{[2
]}

Oliveira, E. ^{[1
]}

Agostinho, S. M. L. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508900 Sao Paulo, SP, Brazil

[2] Univ Sao Paulo, Escuela Engn Lorena, BR-12600970 Lorena, SP, Brazil

[3] UniABC, Univ Grande ABC, Sao Paulo, Brazil

[4] Fundacao Inst Tecnol Osasco, Fac Ciencias, BR-06132380 Osasco, SP, Brazil

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2008年 / 317卷 / 1-3期

基金：

巴西圣保罗研究基金会;

关键词：

bovine serum albumin; austenitic stainless steel; UNSS31254; corrosion; orthopedic implants;

D O I：

10.1016/j.colsurfa.2007.11.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

The influence of bovine serum albumin (BSA) on the anodic dissolution of chromium present in UNS S31254 stainless steel (SS) in 0.15 mol L-1 NaCl at 37.0 +/- 0.5 degrees C has been studied, using anodic potentiostatic polarization curves and optical emission spectroscopy. Electrochemical results have shown that BSA has little effect on the transpassivation potential (E-T) and on the passivation current density values. However on the passivation range, BSA diminishes the intensity of the anodic wave seen at about E=750mV versus SCE attributed to Cr(III)/Cr(VI) oxidation. Optical emission spectroscopy results have shown that BSA prevents the anodic dissolution of chromium to occur and minimizes iron dissolution above the transpassivation potential (E=1160 mV versus SCE). (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：760 / 763

页数：4

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