Abstract
| Original language | English |
|---|---|
| Journal | Materials at High Temperatures |
| Volume | 32 |
| Issue number | 1-2 |
| Pages (from-to) | 44-49 |
| ISSN | 0960-3409 |
| DOIs | |
| Publication status | Published - 2015 |
Bibliographical note
This article is part of a special issue on Microscopy of Oxidation 9Keywords
- Nickel
- KCl
- High temperature corrosion
- 600 C
- Electron microscopy
Cite this
}
Microstructural investigations of pure nickel exposed to KCl induced high temperature corrosion. / Jonsson, T. ; Slomian, A. ; Lomholt, Trine Nybo; Kiamehr, Saeed; Dahl, Kristian Vinter.
In: Materials at High Temperatures, Vol. 32, No. 1-2, 2015, p. 44-49.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Microstructural investigations of pure nickel exposed to KCl induced high temperature corrosion
AU - Jonsson, T.
AU - Slomian, A.
AU - Lomholt, Trine Nybo
AU - Kiamehr, Saeed
AU - Dahl, Kristian Vinter
N1 - This article is part of a special issue on Microscopy of Oxidation 9
PY - 2015
Y1 - 2015
N2 - Oxidation of 99?99% pure nickel was studied with and without 0?10 mg cm22 KCl(s) in an environment containing 5 vol.-%O2, 40 vol.-%H2O and 55 vol.-%N2 at 600uC for up to 168 h. Oxide microstructure was investigated by X-ray diffraction (XRD), focused ion beam (FIB), broad ion beam (BIB) and SEM/EDX. Oxidised nickel shows an approximately parabolic oxide growth rate. The oxide scale is dense with some pores at the oxide/metal interface. Adding small amounts of KCl does not result in a faster corrosion rate of nickel. However, the surface morphology changes and small oxide crusts were observed in the vicinity of former KCl particles. This is proposed to be the result of a NiCl2–KCl eutectic on top of the oxide scale formed above 514uC. The oxide scale formed in the presence of KCl contains more and differently distributed voids than the scale formed without KCl.
AB - Oxidation of 99?99% pure nickel was studied with and without 0?10 mg cm22 KCl(s) in an environment containing 5 vol.-%O2, 40 vol.-%H2O and 55 vol.-%N2 at 600uC for up to 168 h. Oxide microstructure was investigated by X-ray diffraction (XRD), focused ion beam (FIB), broad ion beam (BIB) and SEM/EDX. Oxidised nickel shows an approximately parabolic oxide growth rate. The oxide scale is dense with some pores at the oxide/metal interface. Adding small amounts of KCl does not result in a faster corrosion rate of nickel. However, the surface morphology changes and small oxide crusts were observed in the vicinity of former KCl particles. This is proposed to be the result of a NiCl2–KCl eutectic on top of the oxide scale formed above 514uC. The oxide scale formed in the presence of KCl contains more and differently distributed voids than the scale formed without KCl.
KW - Nickel
KW - KCl
KW - High temperature corrosion
KW - 600 C
KW - Electron microscopy
U2 - 10.1179/0960340914Z.00000000060
DO - 10.1179/0960340914Z.00000000060
M3 - Journal article
VL - 32
SP - 44
EP - 49
JO - Materials at High Temperatures
JF - Materials at High Temperatures
SN - 0960-3409
IS - 1-2
ER -