Effect of chromium ion from autoclave material on corrsion behavior of Ni base alloys in supercritical water

Yuzo Daigo; Yutaka Watanabe; Kiwamu Sue

Effect of chromium ion from autoclave material on corrsion behavior of Ni base alloys in supercritical water

Yuzo Daigo, Yutaka Watanabe, Kiwamu Sue

ENG - Quantum Science and Energy Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

Seven kinds of corrosion tests were carried out on thirteen kinds of Ni-base alloys in sub-critical and supercritical water containing 0.01mol/kg-H₂SO₄ and 800ppm-O₂ using Ni-44Cr-1Mo autoclave. The obtained corrosion rates were significantly lower than the previous experiments done in the same conditions using a Ti autoclave. A compact oxide scale was found on the specimens tested in the Ni-44Cr-1Mo autoclave. The Cr-rich oxide layer would originate from the autoclave material and provide protective function against corrosion. The corrosion retardation phenomenon has been explained by dependencies of Cr2O3 solubility on phase state of water and temperature.

Original language	English
Journal	NACE - International Corrosion Conference Series
Volume	2005-April
Publication status	Published - 2005
Event	Corrosion 2005 - Houston, United States Duration: 2005 Apr 3 → 2005 Apr 7

Keywords

Chromium ion
Chromium oxide
Corrosion
Deposition
Ni-base alloy
Oxide scale
Solubility of oxide
Supercritical water

ASJC Scopus subject areas

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

Cite this

@article{f4877f34461c4c978104f118bb5b243d,

title = "Effect of chromium ion from autoclave material on corrsion behavior of Ni base alloys in supercritical water",

abstract = "Seven kinds of corrosion tests were carried out on thirteen kinds of Ni-base alloys in sub-critical and supercritical water containing 0.01mol/kg-H2SO4 and 800ppm-O2 using Ni-44Cr-1Mo autoclave. The obtained corrosion rates were significantly lower than the previous experiments done in the same conditions using a Ti autoclave. A compact oxide scale was found on the specimens tested in the Ni-44Cr-1Mo autoclave. The Cr-rich oxide layer would originate from the autoclave material and provide protective function against corrosion. The corrosion retardation phenomenon has been explained by dependencies of Cr2O3 solubility on phase state of water and temperature.",

keywords = "Chromium ion, Chromium oxide, Corrosion, Deposition, Ni-base alloy, Oxide scale, Solubility of oxide, Supercritical water",

author = "Yuzo Daigo and Yutaka Watanabe and Kiwamu Sue",

note = "Funding Information: Parts of this work were done under financial support from Mitsubishi Materials Corporation. Part of the work also supported by the Grant-in-Aid for scientific Research (B)(No.13450290), the Ministry of Education, Sports, Culture, Science and technology. Publisher Copyright: {\textcopyright} 2005 by NACE International.; Corrosion 2005 ; Conference date: 03-04-2005 Through 07-04-2005",

year = "2005",

language = "English",

volume = "2005-April",

journal = "NACE - International Corrosion Conference Series",

issn = "0361-4409",

publisher = "National Association of Corrosion Engineers",

}

TY - JOUR

T1 - Effect of chromium ion from autoclave material on corrsion behavior of Ni base alloys in supercritical water

AU - Daigo, Yuzo

AU - Watanabe, Yutaka

AU - Sue, Kiwamu

N1 - Funding Information: Parts of this work were done under financial support from Mitsubishi Materials Corporation. Part of the work also supported by the Grant-in-Aid for scientific Research (B)(No.13450290), the Ministry of Education, Sports, Culture, Science and technology. Publisher Copyright: © 2005 by NACE International.

PY - 2005

Y1 - 2005

N2 - Seven kinds of corrosion tests were carried out on thirteen kinds of Ni-base alloys in sub-critical and supercritical water containing 0.01mol/kg-H2SO4 and 800ppm-O2 using Ni-44Cr-1Mo autoclave. The obtained corrosion rates were significantly lower than the previous experiments done in the same conditions using a Ti autoclave. A compact oxide scale was found on the specimens tested in the Ni-44Cr-1Mo autoclave. The Cr-rich oxide layer would originate from the autoclave material and provide protective function against corrosion. The corrosion retardation phenomenon has been explained by dependencies of Cr2O3 solubility on phase state of water and temperature.

AB - Seven kinds of corrosion tests were carried out on thirteen kinds of Ni-base alloys in sub-critical and supercritical water containing 0.01mol/kg-H2SO4 and 800ppm-O2 using Ni-44Cr-1Mo autoclave. The obtained corrosion rates were significantly lower than the previous experiments done in the same conditions using a Ti autoclave. A compact oxide scale was found on the specimens tested in the Ni-44Cr-1Mo autoclave. The Cr-rich oxide layer would originate from the autoclave material and provide protective function against corrosion. The corrosion retardation phenomenon has been explained by dependencies of Cr2O3 solubility on phase state of water and temperature.

KW - Chromium ion

KW - Chromium oxide

KW - Corrosion

KW - Deposition

KW - Ni-base alloy

KW - Oxide scale

KW - Solubility of oxide

KW - Supercritical water

UR - http://www.scopus.com/inward/record.url?scp=85046856644&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046856644&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85046856644

SN - 0361-4409

VL - 2005-April

JO - NACE - International Corrosion Conference Series

JF - NACE - International Corrosion Conference Series

T2 - Corrosion 2005

Y2 - 3 April 2005 through 7 April 2005

ER -

Effect of chromium ion from autoclave material on corrsion behavior of Ni base alloys in supercritical water

Abstract

Keywords

ASJC Scopus subject areas

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