Correlation between the corrosion behavior and corrosion films formed on the surfaces of Mg82-xNi18Ndx (x = 0, 5, 15) amorphous alloys

H. B. Yao; Y. Li; A. T.S. Wee; J. S. Pan; J. W. Chai

doi:10.1016/S0169-4332(00)00878-3

Correlation between the corrosion behavior and corrosion films formed on the surfaces of Mg_82-xNi₁₈Nd_x (x = 0, 5, 15) amorphous alloys

H. B. Yao^*
, Y. Li
, A. T.S. Wee
, J. S. Pan
, J. W. Chai

^*Corresponding author for this work

National University of Singapore

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

50 Scopus citations

Abstract

This study deals with the characterization of the corrosion films formed on the surfaces of amorphous Mg_82-xNi₁₈Nd_x (x = 0, 5, 15) alloys in 3% NaCl solution saturated with Mg(OH)₂. Hydrogen evolution test revealed that the addition of Nd has a beneficial effect to reduce the dissolution rate of Mg_82-xNi₁₈Nd_x alloys. SEM showed that the least severe corrosion occurred for the Mg₆₇Ni₁₈Nd₁₅ alloy which has the highest Nd concentration. XPS revealed that the corrosion film formed on Mg₆₇Ni₁₈Nd₁₅ is the least hydroxidized among the amorphous Mg_82-xNi₁₈Nd_x (x = 0, 5, 15) alloys. The improved corrosion resistance of Mg₆₇Ni₁₈Nd₁₅ is attributed to the high content of oxidized Nd in the corrosion film preventing the detrimental Cl^- and CO₃^2- anions from penetrating.

Original language	English
Pages (from-to)	54-61
Number of pages	8
Journal	Applied Surface Science
Volume	173
Issue number	1-2
DOIs	https://doi.org/10.1016/S0169-4332(00)00878-3
State	Published - 22 Mar 2001
Externally published	Yes

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title = "Correlation between the corrosion behavior and corrosion films formed on the surfaces of Mg82-xNi18Ndx (x = 0, 5, 15) amorphous alloys",

abstract = "This study deals with the characterization of the corrosion films formed on the surfaces of amorphous Mg82-xNi18Ndx (x = 0, 5, 15) alloys in 3\% NaCl solution saturated with Mg(OH)2. Hydrogen evolution test revealed that the addition of Nd has a beneficial effect to reduce the dissolution rate of Mg82-xNi18Ndx alloys. SEM showed that the least severe corrosion occurred for the Mg67Ni18Nd15 alloy which has the highest Nd concentration. XPS revealed that the corrosion film formed on Mg67Ni18Nd15 is the least hydroxidized among the amorphous Mg82-xNi18Ndx (x = 0, 5, 15) alloys. The improved corrosion resistance of Mg67Ni18Nd15 is attributed to the high content of oxidized Nd in the corrosion film preventing the detrimental Cl- and CO32- anions from penetrating.",

author = "Yao, \{H. B.\} and Y. Li and Wee, \{A. T.S.\} and Pan, \{J. S.\} and Chai, \{J. W.\}",

year = "2001",

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doi = "10.1016/S0169-4332(00)00878-3",

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T1 - Correlation between the corrosion behavior and corrosion films formed on the surfaces of Mg82-xNi18Ndx (x = 0, 5, 15) amorphous alloys

AU - Yao, H. B.

AU - Li, Y.

AU - Wee, A. T.S.

AU - Pan, J. S.

AU - Chai, J. W.

PY - 2001/3/22

Y1 - 2001/3/22

N2 - This study deals with the characterization of the corrosion films formed on the surfaces of amorphous Mg82-xNi18Ndx (x = 0, 5, 15) alloys in 3% NaCl solution saturated with Mg(OH)2. Hydrogen evolution test revealed that the addition of Nd has a beneficial effect to reduce the dissolution rate of Mg82-xNi18Ndx alloys. SEM showed that the least severe corrosion occurred for the Mg67Ni18Nd15 alloy which has the highest Nd concentration. XPS revealed that the corrosion film formed on Mg67Ni18Nd15 is the least hydroxidized among the amorphous Mg82-xNi18Ndx (x = 0, 5, 15) alloys. The improved corrosion resistance of Mg67Ni18Nd15 is attributed to the high content of oxidized Nd in the corrosion film preventing the detrimental Cl- and CO32- anions from penetrating.

AB - This study deals with the characterization of the corrosion films formed on the surfaces of amorphous Mg82-xNi18Ndx (x = 0, 5, 15) alloys in 3% NaCl solution saturated with Mg(OH)2. Hydrogen evolution test revealed that the addition of Nd has a beneficial effect to reduce the dissolution rate of Mg82-xNi18Ndx alloys. SEM showed that the least severe corrosion occurred for the Mg67Ni18Nd15 alloy which has the highest Nd concentration. XPS revealed that the corrosion film formed on Mg67Ni18Nd15 is the least hydroxidized among the amorphous Mg82-xNi18Ndx (x = 0, 5, 15) alloys. The improved corrosion resistance of Mg67Ni18Nd15 is attributed to the high content of oxidized Nd in the corrosion film preventing the detrimental Cl- and CO32- anions from penetrating.

UR - https://www.scopus.com/pages/publications/0034831785

U2 - 10.1016/S0169-4332(00)00878-3

DO - 10.1016/S0169-4332(00)00878-3

M3 - 文章

AN - SCOPUS:0034831785

SN - 0169-4332

VL - 173

SP - 54

EP - 61

JO - Applied Surface Science

JF - Applied Surface Science

IS - 1-2

ER -

Correlation between the corrosion behavior and corrosion films formed on the surfaces of Mg_82-xNi₁₈Nd_x (x = 0, 5, 15) amorphous alloys

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