Effect of heat treatment on the corrosion behavior of amorphous Mg-Ni-Nd alloys

C. H. Kam; Y. Li; S. C. Ng; A. Wee; J. S. Pan; H. Jones

doi:10.1557/JMR.1999.0220

Effect of heat treatment on the corrosion behavior of amorphous Mg-Ni-Nd alloys

C. H. Kam^*
, Y. Li
, S. C. Ng
, A. Wee
, J. S. Pan
, H. Jones

^*Corresponding author for this work

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

22 Scopus citations

Abstract

The effect of heat treatment on the corrosion behavior of seven amorphous melt-spun Mg-Ni-Nd alloys containing 10-20 at.% Ni and 5-15 at.% Nd has been studied. Hydrogen evolution testing was used to determine the dissolution rate of the heat-treated specimens immersed in a 3% NaCl solution saturated with Mg(OH)₂. The dissolution rates of the partially crystallized specimens were found to be lower than those of the untreated specimens, while the fully crystallized specimens exhibited marked deterioration of corrosion resistance. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies on the heat-treated specimens revealed precipitation of Mg₃Nd, Mg₁₂Nd, and Mg₂Ni phases during the crystallization. TEM results show that the partially crystallized structure consists of uniform dispersion of either Mg₃Nd or Mg₂Ni in the amorphous matrix. In contrast, multiple phases precipitate in the fully crystallized specimen.

Original language	English
Pages (from-to)	1638-1644
Number of pages	7
Journal	Journal of Materials Research
Volume	14
Issue number	4
DOIs	https://doi.org/10.1557/JMR.1999.0220
State	Published - Apr 1999
Externally published	Yes

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title = "Effect of heat treatment on the corrosion behavior of amorphous Mg-Ni-Nd alloys",

abstract = "The effect of heat treatment on the corrosion behavior of seven amorphous melt-spun Mg-Ni-Nd alloys containing 10-20 at.\% Ni and 5-15 at.\% Nd has been studied. Hydrogen evolution testing was used to determine the dissolution rate of the heat-treated specimens immersed in a 3\% NaCl solution saturated with Mg(OH)2. The dissolution rates of the partially crystallized specimens were found to be lower than those of the untreated specimens, while the fully crystallized specimens exhibited marked deterioration of corrosion resistance. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies on the heat-treated specimens revealed precipitation of Mg3Nd, Mg12Nd, and Mg2Ni phases during the crystallization. TEM results show that the partially crystallized structure consists of uniform dispersion of either Mg3Nd or Mg2Ni in the amorphous matrix. In contrast, multiple phases precipitate in the fully crystallized specimen.",

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T1 - Effect of heat treatment on the corrosion behavior of amorphous Mg-Ni-Nd alloys

AU - Kam, C. H.

AU - Li, Y.

AU - Ng, S. C.

AU - Wee, A.

AU - Pan, J. S.

AU - Jones, H.

PY - 1999/4

Y1 - 1999/4

N2 - The effect of heat treatment on the corrosion behavior of seven amorphous melt-spun Mg-Ni-Nd alloys containing 10-20 at.% Ni and 5-15 at.% Nd has been studied. Hydrogen evolution testing was used to determine the dissolution rate of the heat-treated specimens immersed in a 3% NaCl solution saturated with Mg(OH)2. The dissolution rates of the partially crystallized specimens were found to be lower than those of the untreated specimens, while the fully crystallized specimens exhibited marked deterioration of corrosion resistance. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies on the heat-treated specimens revealed precipitation of Mg3Nd, Mg12Nd, and Mg2Ni phases during the crystallization. TEM results show that the partially crystallized structure consists of uniform dispersion of either Mg3Nd or Mg2Ni in the amorphous matrix. In contrast, multiple phases precipitate in the fully crystallized specimen.

AB - The effect of heat treatment on the corrosion behavior of seven amorphous melt-spun Mg-Ni-Nd alloys containing 10-20 at.% Ni and 5-15 at.% Nd has been studied. Hydrogen evolution testing was used to determine the dissolution rate of the heat-treated specimens immersed in a 3% NaCl solution saturated with Mg(OH)2. The dissolution rates of the partially crystallized specimens were found to be lower than those of the untreated specimens, while the fully crystallized specimens exhibited marked deterioration of corrosion resistance. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies on the heat-treated specimens revealed precipitation of Mg3Nd, Mg12Nd, and Mg2Ni phases during the crystallization. TEM results show that the partially crystallized structure consists of uniform dispersion of either Mg3Nd or Mg2Ni in the amorphous matrix. In contrast, multiple phases precipitate in the fully crystallized specimen.

UR - https://www.scopus.com/pages/publications/0032657702

U2 - 10.1557/JMR.1999.0220

DO - 10.1557/JMR.1999.0220

M3 - 文章

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SN - 0884-2914

VL - 14

SP - 1638

EP - 1644

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 4

ER -

Effect of heat treatment on the corrosion behavior of amorphous Mg-Ni-Nd alloys

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