Effect of nitriding treatment on corrosion behaviour of Co-Cr-Mo alloy in liquid Al

Ning Tang; Yunping Li; Yuichiro Koizumi; Akihiko Chiba

doi:10.1016/j.corsci.2013.10.004

Effect of nitriding treatment on corrosion behaviour of Co-Cr-Mo alloy in liquid Al

Ning Tang, Yunping Li, Yuichiro Koizumi, Akihiko Chiba

Materials Processing and Characterization Division

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

17 Citations (Scopus)

Abstract

Effects of nitriding treatment on the corrosion behaviour of Co-29Cr-6Mo alloy in liquid Al were investigated. Because of the high solubility and high diffusion coefficient of nitrogen in Co, Cr₂N and π phases formed from sample surface into alloy matrix during nitriding at 1273K; however, the nitride layer was not continuously formed on sample surface even in a prolonged process. The Cr₂N showed obviously higher resistance to liquid Al compared to alloy matrix, but owing to its discontinuous distribution, the formed Cr₂N did not obviously improve the corrosion resistance of the alloy to liquid Al.

Original language	English
Pages (from-to)	244-250
Number of pages	7
Journal	Corrosion Science
Volume	78
DOIs	https://doi.org/10.1016/j.corsci.2013.10.004
Publication status	Published - 2014 Jan

Keywords

A. Aluminium
A. Cobalt
B. SEM
B. TEM
C. Interfaces

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2013.10.004

Cite this

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title = "Effect of nitriding treatment on corrosion behaviour of Co-Cr-Mo alloy in liquid Al",

abstract = "Effects of nitriding treatment on the corrosion behaviour of Co-29Cr-6Mo alloy in liquid Al were investigated. Because of the high solubility and high diffusion coefficient of nitrogen in Co, Cr2N and π phases formed from sample surface into alloy matrix during nitriding at 1273K; however, the nitride layer was not continuously formed on sample surface even in a prolonged process. The Cr2N showed obviously higher resistance to liquid Al compared to alloy matrix, but owing to its discontinuous distribution, the formed Cr2N did not obviously improve the corrosion resistance of the alloy to liquid Al.",

keywords = "A. Aluminium, A. Cobalt, B. SEM, B. TEM, C. Interfaces",

author = "Ning Tang and Yunping Li and Yuichiro Koizumi and Akihiko Chiba",

note = "Funding Information: This research was mainly supported by a Regional Innovation Cluster Program 2010 from the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors would also like to express their appreciation to Mr. Shun Ito for the assistance with TEM work.",

year = "2014",

month = jan,

doi = "10.1016/j.corsci.2013.10.004",

language = "English",

volume = "78",

pages = "244--250",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Effect of nitriding treatment on corrosion behaviour of Co-Cr-Mo alloy in liquid Al

AU - Tang, Ning

AU - Li, Yunping

AU - Koizumi, Yuichiro

AU - Chiba, Akihiko

N1 - Funding Information: This research was mainly supported by a Regional Innovation Cluster Program 2010 from the Ministry of Education, Culture, Sports, Science and Technology of Japan. The authors would also like to express their appreciation to Mr. Shun Ito for the assistance with TEM work.

PY - 2014/1

Y1 - 2014/1

N2 - Effects of nitriding treatment on the corrosion behaviour of Co-29Cr-6Mo alloy in liquid Al were investigated. Because of the high solubility and high diffusion coefficient of nitrogen in Co, Cr2N and π phases formed from sample surface into alloy matrix during nitriding at 1273K; however, the nitride layer was not continuously formed on sample surface even in a prolonged process. The Cr2N showed obviously higher resistance to liquid Al compared to alloy matrix, but owing to its discontinuous distribution, the formed Cr2N did not obviously improve the corrosion resistance of the alloy to liquid Al.

AB - Effects of nitriding treatment on the corrosion behaviour of Co-29Cr-6Mo alloy in liquid Al were investigated. Because of the high solubility and high diffusion coefficient of nitrogen in Co, Cr2N and π phases formed from sample surface into alloy matrix during nitriding at 1273K; however, the nitride layer was not continuously formed on sample surface even in a prolonged process. The Cr2N showed obviously higher resistance to liquid Al compared to alloy matrix, but owing to its discontinuous distribution, the formed Cr2N did not obviously improve the corrosion resistance of the alloy to liquid Al.

KW - A. Aluminium

KW - A. Cobalt

KW - B. SEM

KW - B. TEM

KW - C. Interfaces

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DO - 10.1016/j.corsci.2013.10.004

M3 - Article

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SN - 0010-938X

VL - 78

SP - 244

EP - 250

JO - Corrosion Science

JF - Corrosion Science

ER -

Effect of nitriding treatment on corrosion behaviour of Co-Cr-Mo alloy in liquid Al

Abstract

Keywords

ASJC Scopus subject areas

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