Oxidation-sulfidation attacks on alloy 600 in supercritical water containing organic sulfides

Jianqiao Yang; Shuzhong Wang; Yanhui Li; Zhuohang Jiang; Jie Zhang; Donghai Xu; Kai Wang

doi:10.1016/j.matlet.2019.127218

Oxidation-sulfidation attacks on alloy 600 in supercritical water containing organic sulfides

Jianqiao Yang
, Shuzhong Wang
, Yanhui Li
, Zhuohang Jiang
, Jie Zhang
, Donghai Xu
, Kai Wang

School of Energy and Power Engineering

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

13 Scopus citations

Abstract

The corrosion characteristics of alloy 600 in supercritical water containing organic sulfides was investigated after an exposure at 480 °C and 25 MPa for 72 h. A duplex-structure corrosion scale was observed, with the outer layer predominantly consisting of NiS. The inner corrosion layer was composed of Cr-rich spinel oxides and the fast channels (resulting from the interconnected sulfidation productions such as NiS and Ni₃S₂) for outward transport of metal cations. This phenomenon can be attributed to the emulative oxidation-sulfidation of alloy 600 because the supercritical water containing organic sulfides system may become a mixture of dominant SCW and H₂S due to the gasification reaction of organic sulfides. The formation and growth processes of corrosion scales was also discussed.

Original language	English
Article number	127218
Journal	Materials Letters
Volume	263
DOIs	https://doi.org/10.1016/j.matlet.2019.127218
State	Published - 15 Mar 2020

Keywords

Alloy 600
HS
Oxidation
Sulfidation
Supercritical water

Access to Document

10.1016/j.matlet.2019.127218

Cite this

@article{4d037b77938a4e8d984ef02b8ef314e2,

title = "Oxidation-sulfidation attacks on alloy 600 in supercritical water containing organic sulfides",

abstract = "The corrosion characteristics of alloy 600 in supercritical water containing organic sulfides was investigated after an exposure at 480 °C and 25 MPa for 72 h. A duplex-structure corrosion scale was observed, with the outer layer predominantly consisting of NiS. The inner corrosion layer was composed of Cr-rich spinel oxides and the fast channels (resulting from the interconnected sulfidation productions such as NiS and Ni3S2) for outward transport of metal cations. This phenomenon can be attributed to the emulative oxidation-sulfidation of alloy 600 because the supercritical water containing organic sulfides system may become a mixture of dominant SCW and H2S due to the gasification reaction of organic sulfides. The formation and growth processes of corrosion scales was also discussed.",

keywords = "Alloy 600, HS, Oxidation, Sulfidation, Supercritical water",

author = "Jianqiao Yang and Shuzhong Wang and Yanhui Li and Zhuohang Jiang and Jie Zhang and Donghai Xu and Kai Wang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2020",

month = mar,

day = "15",

doi = "10.1016/j.matlet.2019.127218",

language = "英语",

volume = "263",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Oxidation-sulfidation attacks on alloy 600 in supercritical water containing organic sulfides

AU - Yang, Jianqiao

AU - Wang, Shuzhong

AU - Li, Yanhui

AU - Jiang, Zhuohang

AU - Zhang, Jie

AU - Xu, Donghai

AU - Wang, Kai

PY - 2020/3/15

Y1 - 2020/3/15

N2 - The corrosion characteristics of alloy 600 in supercritical water containing organic sulfides was investigated after an exposure at 480 °C and 25 MPa for 72 h. A duplex-structure corrosion scale was observed, with the outer layer predominantly consisting of NiS. The inner corrosion layer was composed of Cr-rich spinel oxides and the fast channels (resulting from the interconnected sulfidation productions such as NiS and Ni3S2) for outward transport of metal cations. This phenomenon can be attributed to the emulative oxidation-sulfidation of alloy 600 because the supercritical water containing organic sulfides system may become a mixture of dominant SCW and H2S due to the gasification reaction of organic sulfides. The formation and growth processes of corrosion scales was also discussed.

AB - The corrosion characteristics of alloy 600 in supercritical water containing organic sulfides was investigated after an exposure at 480 °C and 25 MPa for 72 h. A duplex-structure corrosion scale was observed, with the outer layer predominantly consisting of NiS. The inner corrosion layer was composed of Cr-rich spinel oxides and the fast channels (resulting from the interconnected sulfidation productions such as NiS and Ni3S2) for outward transport of metal cations. This phenomenon can be attributed to the emulative oxidation-sulfidation of alloy 600 because the supercritical water containing organic sulfides system may become a mixture of dominant SCW and H2S due to the gasification reaction of organic sulfides. The formation and growth processes of corrosion scales was also discussed.

KW - Alloy 600

KW - HS

KW - Oxidation

KW - Sulfidation

KW - Supercritical water

UR - https://www.scopus.com/pages/publications/85077191834

U2 - 10.1016/j.matlet.2019.127218

DO - 10.1016/j.matlet.2019.127218

M3 - 文章

AN - SCOPUS:85077191834

SN - 0167-577X

VL - 263

JO - Materials Letters

JF - Materials Letters

M1 - 127218

ER -

Oxidation-sulfidation attacks on alloy 600 in supercritical water containing organic sulfides

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this