TEM observation of oxide scale formed on a Ti-Al-Zr allLIUoy oxidized at 360°C in alkaline steam

Y. Z. Liu; X. T. Zu; J. Lian; L. Wang; X. Q. Huang; Z. G. Wang; L. M. Wang; R. C. Ewing

doi:10.1080/09500830500040163

TEM observation of oxide scale formed on a Ti-Al-Zr allLIUoy oxidized at 360°C in alkaline steam

Y. Z. Liu, X. T. Zu^*, J. Lian, L. Wang, X. Q. Huang, Z. G. Wang, L. M. Wang, R. C. Ewing

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

Ti-Al-Zr alloy has been oxidized at 360°C in alkaline steam at a pressure of 10.3 ± 0.7 MPa. Cross-sectional transmission electron microscopy (TEM) observations indicated that the oxide scale of Ti-Al-Zr alloy was composed of outer and inner subscales, in which the outer layer consists of anatase-TiO₂ and the inner layer a mixture of TiO and Ti ₂O. The thickness of the Ti₂O, TiO and anatase-TiO ₂ were approximately 50, 100 and 400 nm, respectively. These results were confirmed by X-ray energy dispersive spectrometry (EDS) measurements. The enhanced corrosion of titanium alloys in LiOH solution is attributed to a high hexagonal Ti₂O to tetragonal TiO₂ phase transformation rate induced by the substitution of Li⁺ for Ti⁴⁺ in the oxide layer.

Original language	English
Pages (from-to)	705-712
Number of pages	8
Journal	Philosophical Magazine Letters
Volume	84
Issue number	11
DOIs	https://doi.org/10.1080/09500830500040163
Publication status	Published - Nov 2004
Externally published	Yes

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title = "TEM observation of oxide scale formed on a Ti-Al-Zr allLIUoy oxidized at 360°C in alkaline steam",

abstract = "Ti-Al-Zr alloy has been oxidized at 360°C in alkaline steam at a pressure of 10.3 ± 0.7 MPa. Cross-sectional transmission electron microscopy (TEM) observations indicated that the oxide scale of Ti-Al-Zr alloy was composed of outer and inner subscales, in which the outer layer consists of anatase-TiO2 and the inner layer a mixture of TiO and Ti 2O. The thickness of the Ti2O, TiO and anatase-TiO 2 were approximately 50, 100 and 400 nm, respectively. These results were confirmed by X-ray energy dispersive spectrometry (EDS) measurements. The enhanced corrosion of titanium alloys in LiOH solution is attributed to a high hexagonal Ti2O to tetragonal TiO2 phase transformation rate induced by the substitution of Li+ for Ti4+ in the oxide layer.",

author = "Liu, {Y. Z.} and Zu, {X. T.} and J. Lian and L. Wang and Huang, {X. Q.} and Wang, {Z. G.} and Wang, {L. M.} and Ewing, {R. C.}",

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doi = "10.1080/09500830500040163",

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T1 - TEM observation of oxide scale formed on a Ti-Al-Zr allLIUoy oxidized at 360°C in alkaline steam

AU - Liu, Y. Z.

AU - Zu, X. T.

AU - Lian, J.

AU - Wang, L.

AU - Huang, X. Q.

AU - Wang, Z. G.

AU - Wang, L. M.

AU - Ewing, R. C.

PY - 2004/11

Y1 - 2004/11

N2 - Ti-Al-Zr alloy has been oxidized at 360°C in alkaline steam at a pressure of 10.3 ± 0.7 MPa. Cross-sectional transmission electron microscopy (TEM) observations indicated that the oxide scale of Ti-Al-Zr alloy was composed of outer and inner subscales, in which the outer layer consists of anatase-TiO2 and the inner layer a mixture of TiO and Ti 2O. The thickness of the Ti2O, TiO and anatase-TiO 2 were approximately 50, 100 and 400 nm, respectively. These results were confirmed by X-ray energy dispersive spectrometry (EDS) measurements. The enhanced corrosion of titanium alloys in LiOH solution is attributed to a high hexagonal Ti2O to tetragonal TiO2 phase transformation rate induced by the substitution of Li+ for Ti4+ in the oxide layer.

AB - Ti-Al-Zr alloy has been oxidized at 360°C in alkaline steam at a pressure of 10.3 ± 0.7 MPa. Cross-sectional transmission electron microscopy (TEM) observations indicated that the oxide scale of Ti-Al-Zr alloy was composed of outer and inner subscales, in which the outer layer consists of anatase-TiO2 and the inner layer a mixture of TiO and Ti 2O. The thickness of the Ti2O, TiO and anatase-TiO 2 were approximately 50, 100 and 400 nm, respectively. These results were confirmed by X-ray energy dispersive spectrometry (EDS) measurements. The enhanced corrosion of titanium alloys in LiOH solution is attributed to a high hexagonal Ti2O to tetragonal TiO2 phase transformation rate induced by the substitution of Li+ for Ti4+ in the oxide layer.

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EP - 712

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ER -

TEM observation of oxide scale formed on a Ti-Al-Zr allLIUoy oxidized at 360°C in alkaline steam

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