The corrosion behavior of porous Ni3Al intermetallic materials in strong alkali solution

Wu Liang; Yao Jiang; Dong Hongxing; Yuehui He; Nanping Xu; Jin Zou; Baiyun Huang; C. T. Liu

doi:10.1016/j.intermet.2011.06.016

The corrosion behavior of porous Ni₃Al intermetallic materials in strong alkali solution

Wu Liang, Yao Jiang, Dong Hongxing, Yuehui He, Nanping Xu, Jin Zou, Baiyun Huang, C. T. Liu

College of Chemical Engineering

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

43 Scopus citations

Abstract

Porous Ni₃Al alloys was prepared by cold pressing and reactive synthesis of Ni and Al elemental powders via the Kirkendall effect. Corrosion behavior of porous Ni₃Al alloys was investigated by electrochemical tests and weight change measurements. Polarization resistance indicated that porous Ni₃Al had more positive free corrosion potential and lower corrosion current than porous Ni and porous Ti and exhibited a wider passive region. The immersion test revealed that after 2000 h immersion, the weight change and pore structure of porous Ni₃Al stayed stable in KOH solution. The influence of temperature on corrosion behavior and corrosion mechanism of porous Ni₃Al were also discussed.

Original language	English
Pages (from-to)	1759-1765
Number of pages	7
Journal	Intermetallics
Volume	19
Issue number	11
DOIs	https://doi.org/10.1016/j.intermet.2011.06.016
State	Published - Nov 2011

Keywords

A. Nickel aluminide, based on NiAl
B. Corrosion
C. Reaction Synthesis
C. Sintering
G. Corrosion- and erosion-resistant applications

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10.1016/j.intermet.2011.06.016

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abstract = "Porous Ni3Al alloys was prepared by cold pressing and reactive synthesis of Ni and Al elemental powders via the Kirkendall effect. Corrosion behavior of porous Ni3Al alloys was investigated by electrochemical tests and weight change measurements. Polarization resistance indicated that porous Ni3Al had more positive free corrosion potential and lower corrosion current than porous Ni and porous Ti and exhibited a wider passive region. The immersion test revealed that after 2000 h immersion, the weight change and pore structure of porous Ni3Al stayed stable in KOH solution. The influence of temperature on corrosion behavior and corrosion mechanism of porous Ni3Al were also discussed.",

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T1 - The corrosion behavior of porous Ni3Al intermetallic materials in strong alkali solution

AU - Liang, Wu

AU - Jiang, Yao

AU - Hongxing, Dong

AU - He, Yuehui

AU - Xu, Nanping

AU - Zou, Jin

AU - Huang, Baiyun

AU - Liu, C. T.

PY - 2011/11

Y1 - 2011/11

N2 - Porous Ni3Al alloys was prepared by cold pressing and reactive synthesis of Ni and Al elemental powders via the Kirkendall effect. Corrosion behavior of porous Ni3Al alloys was investigated by electrochemical tests and weight change measurements. Polarization resistance indicated that porous Ni3Al had more positive free corrosion potential and lower corrosion current than porous Ni and porous Ti and exhibited a wider passive region. The immersion test revealed that after 2000 h immersion, the weight change and pore structure of porous Ni3Al stayed stable in KOH solution. The influence of temperature on corrosion behavior and corrosion mechanism of porous Ni3Al were also discussed.

AB - Porous Ni3Al alloys was prepared by cold pressing and reactive synthesis of Ni and Al elemental powders via the Kirkendall effect. Corrosion behavior of porous Ni3Al alloys was investigated by electrochemical tests and weight change measurements. Polarization resistance indicated that porous Ni3Al had more positive free corrosion potential and lower corrosion current than porous Ni and porous Ti and exhibited a wider passive region. The immersion test revealed that after 2000 h immersion, the weight change and pore structure of porous Ni3Al stayed stable in KOH solution. The influence of temperature on corrosion behavior and corrosion mechanism of porous Ni3Al were also discussed.

KW - A. Nickel aluminide, based on NiAl

KW - B. Corrosion

KW - C. Reaction Synthesis

KW - C. Sintering

KW - G. Corrosion- and erosion-resistant applications

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DO - 10.1016/j.intermet.2011.06.016

M3 - 文章

AN - SCOPUS:80052235816

SN - 0966-9795

VL - 19

SP - 1759

EP - 1765

JO - Intermetallics

JF - Intermetallics

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ER -

The corrosion behavior of porous Ni₃Al intermetallic materials in strong alkali solution

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