Early oxidation mechanism of austenitic stainless steel TP347H in supercritical water

Yanhui Li; Shuzhong Wang; Panpan Sun; Donghai Xu; Mengmeng Ren; Yang Guo; Guike Lin

doi:10.1016/j.corsci.2017.09.023

Early oxidation mechanism of austenitic stainless steel TP347H in supercritical water

Yanhui Li
, Shuzhong Wang
, Panpan Sun
, Donghai Xu
, Mengmeng Ren
, Yang Guo
, Guike Lin

School of Energy and Power Engineering

Xi'an Jiaotong University

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

90 Scopus citations

Abstract

The initial corrosion behaviour of austenitic TP347H exposed to supercritical water was investigated. The early oxidation can be categorized into three stages (rapid oxidation, transitory, and diffusion-controlled stages). Higher temperature resulted in a transformation towards the subsequent stage earlier and less oxidation resistance. Cr⁶⁺ species (likely CrO₂(OH)₂) were only generated on the surface in the very early phase, and then they gradually disappeared as the exposure time increased. Compared with a complete outer Fe-rich oxide layer, the formation priority of a continuous inner Cr-rich layer was observed at 540 °C within 35 h. A corresponding early oxidation process was determined.

Original language	English
Pages (from-to)	241-252
Number of pages	12
Journal	Corrosion Science
Volume	128
DOIs	https://doi.org/10.1016/j.corsci.2017.09.023
State	Published - Nov 2017

Keywords

A. Stainless steel
B. AFM
B. Raman spectroscopy
B. SEM
B. XPS
C. Oxidation

Access to Document

10.1016/j.corsci.2017.09.023

Cite this

@article{6a8e2569f2bf4edd94f9fa38ec825b8f,

title = "Early oxidation mechanism of austenitic stainless steel TP347H in supercritical water",

abstract = "The initial corrosion behaviour of austenitic TP347H exposed to supercritical water was investigated. The early oxidation can be categorized into three stages (rapid oxidation, transitory, and diffusion-controlled stages). Higher temperature resulted in a transformation towards the subsequent stage earlier and less oxidation resistance. Cr6+ species (likely CrO2(OH)2) were only generated on the surface in the very early phase, and then they gradually disappeared as the exposure time increased. Compared with a complete outer Fe-rich oxide layer, the formation priority of a continuous inner Cr-rich layer was observed at 540 °C within 35 h. A corresponding early oxidation process was determined.",

keywords = "A. Stainless steel, B. AFM, B. Raman spectroscopy, B. SEM, B. XPS, C. Oxidation",

author = "Yanhui Li and Shuzhong Wang and Panpan Sun and Donghai Xu and Mengmeng Ren and Yang Guo and Guike Lin",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = nov,

doi = "10.1016/j.corsci.2017.09.023",

language = "英语",

volume = "128",

pages = "241--252",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Early oxidation mechanism of austenitic stainless steel TP347H in supercritical water

AU - Li, Yanhui

AU - Wang, Shuzhong

AU - Sun, Panpan

AU - Xu, Donghai

AU - Ren, Mengmeng

AU - Guo, Yang

AU - Lin, Guike

PY - 2017/11

Y1 - 2017/11

N2 - The initial corrosion behaviour of austenitic TP347H exposed to supercritical water was investigated. The early oxidation can be categorized into three stages (rapid oxidation, transitory, and diffusion-controlled stages). Higher temperature resulted in a transformation towards the subsequent stage earlier and less oxidation resistance. Cr6+ species (likely CrO2(OH)2) were only generated on the surface in the very early phase, and then they gradually disappeared as the exposure time increased. Compared with a complete outer Fe-rich oxide layer, the formation priority of a continuous inner Cr-rich layer was observed at 540 °C within 35 h. A corresponding early oxidation process was determined.

AB - The initial corrosion behaviour of austenitic TP347H exposed to supercritical water was investigated. The early oxidation can be categorized into three stages (rapid oxidation, transitory, and diffusion-controlled stages). Higher temperature resulted in a transformation towards the subsequent stage earlier and less oxidation resistance. Cr6+ species (likely CrO2(OH)2) were only generated on the surface in the very early phase, and then they gradually disappeared as the exposure time increased. Compared with a complete outer Fe-rich oxide layer, the formation priority of a continuous inner Cr-rich layer was observed at 540 °C within 35 h. A corresponding early oxidation process was determined.

KW - A. Stainless steel

KW - B. AFM

KW - B. Raman spectroscopy

KW - B. SEM

KW - B. XPS

KW - C. Oxidation

UR - https://www.scopus.com/pages/publications/85029894843

U2 - 10.1016/j.corsci.2017.09.023

DO - 10.1016/j.corsci.2017.09.023

M3 - 文章

AN - SCOPUS:85029894843

SN - 0010-938X

VL - 128

SP - 241

EP - 252

JO - Corrosion Science

JF - Corrosion Science

ER -

Early oxidation mechanism of austenitic stainless steel TP347H in supercritical water

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this