Microstructure and corrosion resistance of laser clad coating of Ni 2Si/Ni2Si2 silicide alloy

Chunmin Wang; Liangxu Cai; Huaming Wang

Microstructure and corrosion resistance of laser clad coating of Ni ₂Si/Ni₂Si₂ silicide alloy

Chunmin Wang
, Liangxu Cai
, Huaming Wang

Beihang University

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

5 Scopus citations

Abstract

A corrosion resistant Ni₂Si/Ni₃Si₂ silicide alloy coating was fabricated on a substrate of low carbon steel A3 by laser cladding of the Ni76Si24 alloy powders. The laser clad silicide alloy coating has a rapidly solidified homogeneous microstructure consisting of plate-like Ni₂Si primary phase and minor amount of Ni ₂Si/Ni₃Si₂ eutectics and is metallurgically bonded to the steel substrate. The corrosion resistances of the silicide alloy coating in the water solutions of 0.5mol/I H₂SO₄ and 3.5% NaCl were evaluated utilizing the electrochemical polarization corrosion-test method. Because of the inherent excellent corrosion-resisting properties of the constituting phases Ni₂Si and Ni₃Si₂, and the rapidly solidified homogeneous microstructure, the laser clad Ni ₂Si/Ni₃Si₂ silicide alloy coating exhibits excellent corrosion resistance.

Original language	English
Pages (from-to)	197-200
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	32
Issue number	3
State	Published - Mar 2003
Externally published	Yes

Keywords

Corrosion resistant
Laser clad
Microstructure
Silicide alloy coating

Cite this

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title = "Microstructure and corrosion resistance of laser clad coating of Ni 2Si/Ni2Si2 silicide alloy",

abstract = "A corrosion resistant Ni2Si/Ni3Si2 silicide alloy coating was fabricated on a substrate of low carbon steel A3 by laser cladding of the Ni76Si24 alloy powders. The laser clad silicide alloy coating has a rapidly solidified homogeneous microstructure consisting of plate-like Ni2Si primary phase and minor amount of Ni 2Si/Ni3Si2 eutectics and is metallurgically bonded to the steel substrate. The corrosion resistances of the silicide alloy coating in the water solutions of 0.5mol/I H2SO4 and 3.5\% NaCl were evaluated utilizing the electrochemical polarization corrosion-test method. Because of the inherent excellent corrosion-resisting properties of the constituting phases Ni2Si and Ni3Si2, and the rapidly solidified homogeneous microstructure, the laser clad Ni 2Si/Ni3Si2 silicide alloy coating exhibits excellent corrosion resistance.",

keywords = "Corrosion resistant, Laser clad, Microstructure, Silicide alloy coating",

author = "Chunmin Wang and Liangxu Cai and Huaming Wang",

year = "2003",

month = mar,

language = "英语",

volume = "32",

pages = "197--200",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "3",

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TY - JOUR

T1 - Microstructure and corrosion resistance of laser clad coating of Ni 2Si/Ni2Si2 silicide alloy

AU - Wang, Chunmin

AU - Cai, Liangxu

AU - Wang, Huaming

PY - 2003/3

Y1 - 2003/3

N2 - A corrosion resistant Ni2Si/Ni3Si2 silicide alloy coating was fabricated on a substrate of low carbon steel A3 by laser cladding of the Ni76Si24 alloy powders. The laser clad silicide alloy coating has a rapidly solidified homogeneous microstructure consisting of plate-like Ni2Si primary phase and minor amount of Ni 2Si/Ni3Si2 eutectics and is metallurgically bonded to the steel substrate. The corrosion resistances of the silicide alloy coating in the water solutions of 0.5mol/I H2SO4 and 3.5% NaCl were evaluated utilizing the electrochemical polarization corrosion-test method. Because of the inherent excellent corrosion-resisting properties of the constituting phases Ni2Si and Ni3Si2, and the rapidly solidified homogeneous microstructure, the laser clad Ni 2Si/Ni3Si2 silicide alloy coating exhibits excellent corrosion resistance.

AB - A corrosion resistant Ni2Si/Ni3Si2 silicide alloy coating was fabricated on a substrate of low carbon steel A3 by laser cladding of the Ni76Si24 alloy powders. The laser clad silicide alloy coating has a rapidly solidified homogeneous microstructure consisting of plate-like Ni2Si primary phase and minor amount of Ni 2Si/Ni3Si2 eutectics and is metallurgically bonded to the steel substrate. The corrosion resistances of the silicide alloy coating in the water solutions of 0.5mol/I H2SO4 and 3.5% NaCl were evaluated utilizing the electrochemical polarization corrosion-test method. Because of the inherent excellent corrosion-resisting properties of the constituting phases Ni2Si and Ni3Si2, and the rapidly solidified homogeneous microstructure, the laser clad Ni 2Si/Ni3Si2 silicide alloy coating exhibits excellent corrosion resistance.

KW - Corrosion resistant

KW - Laser clad

KW - Microstructure

KW - Silicide alloy coating

UR - https://www.scopus.com/pages/publications/24644473653

M3 - 文章

AN - SCOPUS:24644473653

SN - 1002-185X

VL - 32

SP - 197

EP - 200

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 3

ER -

Microstructure and corrosion resistance of laser clad coating of Ni ₂Si/Ni₂Si₂ silicide alloy

Abstract

Keywords

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