A bipolar model of the passivity of stainless steels-II. The influence of aqueous molybdate

Y. C. Lu; C. R. Clayton; A. R. Brooks

doi:10.1016/0010-938X(89)90058-9

A bipolar model of the passivity of stainless steels-II. The influence of aqueous molybdate

Y. C. Lu
, C. R. Clayton
, A. R. Brooks

Materials Science and Engineering

Stony Brook University

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

129 Scopus citations

Abstract

The passive films formed on Fe-19Cr-9Ni in solutions of 0.3 M NaCl (pH 5.4) and 0.3 M NaCl + 0.16 M Na₂MoO₄ (pH 9.0) have been characterized by variable angle XPS. Additional studies were conducted to determine the effect of the pH change on the passive film and which agent was responsible for the deprotonation found in the film produced in the molybdate solution. It is proposed that the MoO₄² anions reinforce the action of CrO₄^2- in enhancing the bipolarity of the film and thereby significantly increasing the deprotonation of the inner Cr(OH)₃ region, forming a more protective Cr₂O₃ barrier layer.

Original language	English
Pages (from-to)	863-880
Number of pages	18
Journal	Corrosion Science
Volume	29
Issue number	7
DOIs	https://doi.org/10.1016/0010-938X(89)90058-9
State	Published - 1989

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title = "A bipolar model of the passivity of stainless steels-II. The influence of aqueous molybdate",

abstract = "The passive films formed on Fe-19Cr-9Ni in solutions of 0.3 M NaCl (pH 5.4) and 0.3 M NaCl + 0.16 M Na2MoO4 (pH 9.0) have been characterized by variable angle XPS. Additional studies were conducted to determine the effect of the pH change on the passive film and which agent was responsible for the deprotonation found in the film produced in the molybdate solution. It is proposed that the MoO42 anions reinforce the action of CrO42- in enhancing the bipolarity of the film and thereby significantly increasing the deprotonation of the inner Cr(OH)3 region, forming a more protective Cr2O3 barrier layer.",

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year = "1989",

doi = "10.1016/0010-938X(89)90058-9",

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journal = "Corrosion Science",

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T1 - A bipolar model of the passivity of stainless steels-II. The influence of aqueous molybdate

AU - Lu, Y. C.

AU - Clayton, C. R.

AU - Brooks, A. R.

PY - 1989

Y1 - 1989

N2 - The passive films formed on Fe-19Cr-9Ni in solutions of 0.3 M NaCl (pH 5.4) and 0.3 M NaCl + 0.16 M Na2MoO4 (pH 9.0) have been characterized by variable angle XPS. Additional studies were conducted to determine the effect of the pH change on the passive film and which agent was responsible for the deprotonation found in the film produced in the molybdate solution. It is proposed that the MoO42 anions reinforce the action of CrO42- in enhancing the bipolarity of the film and thereby significantly increasing the deprotonation of the inner Cr(OH)3 region, forming a more protective Cr2O3 barrier layer.

AB - The passive films formed on Fe-19Cr-9Ni in solutions of 0.3 M NaCl (pH 5.4) and 0.3 M NaCl + 0.16 M Na2MoO4 (pH 9.0) have been characterized by variable angle XPS. Additional studies were conducted to determine the effect of the pH change on the passive film and which agent was responsible for the deprotonation found in the film produced in the molybdate solution. It is proposed that the MoO42 anions reinforce the action of CrO42- in enhancing the bipolarity of the film and thereby significantly increasing the deprotonation of the inner Cr(OH)3 region, forming a more protective Cr2O3 barrier layer.

UR - https://www.scopus.com/pages/publications/0024931641

U2 - 10.1016/0010-938X(89)90058-9

DO - 10.1016/0010-938X(89)90058-9

M3 - Article

AN - SCOPUS:0024931641

SN - 0010-938X

VL - 29

SP - 863

EP - 880

JO - Corrosion Science

JF - Corrosion Science

IS - 7

ER -

A bipolar model of the passivity of stainless steels-II. The influence of aqueous molybdate

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