Microstructural evolution during high-temperature oxidation of Ti2AlN ceramics

Bai Cui; Rafael Sa; Daniel Jayaseelan; Fawad Inam; Michael Reece; William Edward Lee

doi:10.4028/www.scientific.net/AST.65.106

Microstructural evolution during high-temperature oxidation of Ti2AlN ceramics

Bai Cui, Rafael Sa, Daniel Jayaseelan, Fawad Inam, Michael Reece, William Edward Lee

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

Abstract

Microstructural evolution of Ti2AlN ceramics during high-temperature oxidation in air has been revealed by X-ray diffraction (XRD), field emission gun scanning electron microscopy FEGSEM), and energy-dispersive spectroscopy (EDS). After oxidation below 1200 ºC, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 ºC, more complex layered microstructures formed containing Al2TiO5, rutile, α-Al2O3, and continuous void layers. With increasing temperature, anatase gradually transformed to rutile, and TiO2 reacted with α-Al2O3 to form Al2TiO5. Based on these microstructural observations, an oxidation mechanism for Ti2AlN ceramics is proposed.

Original language	English
Pages (from-to)	106-111
Journal	Advances in Science and Technology
Volume	65
DOIs	https://doi.org/10.4028/www.scientific.net/AST.65.106
Publication status	Published - 2010

Keywords

MAX Phase
microstructure
oxidation

Access to Document

10.4028/www.scientific.net/AST.65.106

Cite this

@article{06faf5a4c55644ba89f57e45cc36bf9e,

title = "Microstructural evolution during high-temperature oxidation of Ti2AlN ceramics",

abstract = "Microstructural evolution of Ti2AlN ceramics during high-temperature oxidation in air has been revealed by X-ray diffraction (XRD), field emission gun scanning electron microscopy FEGSEM), and energy-dispersive spectroscopy (EDS). After oxidation below 1200 ºC, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 ºC, more complex layered microstructures formed containing Al2TiO5, rutile, α-Al2O3, and continuous void layers. With increasing temperature, anatase gradually transformed to rutile, and TiO2 reacted with α-Al2O3 to form Al2TiO5. Based on these microstructural observations, an oxidation mechanism for Ti2AlN ceramics is proposed.",

keywords = "MAX Phase, microstructure, oxidation",

author = "Bai Cui and Rafael Sa and Daniel Jayaseelan and Fawad Inam and Michael Reece and Lee, \{William Edward\}",

year = "2010",

doi = "10.4028/www.scientific.net/AST.65.106",

language = "English",

volume = "65",

pages = "106--111",

journal = "Advances in Science and Technology",

issn = "1662-0356",

publisher = "Scientific.net",

}

TY - JOUR

T1 - Microstructural evolution during high-temperature oxidation of Ti2AlN ceramics

AU - Cui, Bai

AU - Sa, Rafael

AU - Jayaseelan, Daniel

AU - Inam, Fawad

AU - Reece, Michael

AU - Lee, William Edward

PY - 2010

Y1 - 2010

N2 - Microstructural evolution of Ti2AlN ceramics during high-temperature oxidation in air has been revealed by X-ray diffraction (XRD), field emission gun scanning electron microscopy FEGSEM), and energy-dispersive spectroscopy (EDS). After oxidation below 1200 ºC, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 ºC, more complex layered microstructures formed containing Al2TiO5, rutile, α-Al2O3, and continuous void layers. With increasing temperature, anatase gradually transformed to rutile, and TiO2 reacted with α-Al2O3 to form Al2TiO5. Based on these microstructural observations, an oxidation mechanism for Ti2AlN ceramics is proposed.

AB - Microstructural evolution of Ti2AlN ceramics during high-temperature oxidation in air has been revealed by X-ray diffraction (XRD), field emission gun scanning electron microscopy FEGSEM), and energy-dispersive spectroscopy (EDS). After oxidation below 1200 ºC, layered microstructures formed on Ti2AlN surfaces containing anatase, rutile, and α-Al2O3. Above 1200 ºC, more complex layered microstructures formed containing Al2TiO5, rutile, α-Al2O3, and continuous void layers. With increasing temperature, anatase gradually transformed to rutile, and TiO2 reacted with α-Al2O3 to form Al2TiO5. Based on these microstructural observations, an oxidation mechanism for Ti2AlN ceramics is proposed.

KW - MAX Phase

KW - microstructure

KW - oxidation

U2 - 10.4028/www.scientific.net/AST.65.106

DO - 10.4028/www.scientific.net/AST.65.106

M3 - Article

SN - 1662-0356

VL - 65

SP - 106

EP - 111

JO - Advances in Science and Technology

JF - Advances in Science and Technology

ER -

Microstructural evolution during high-temperature oxidation of Ti2AlN ceramics

Abstract

Keywords

Access to Document

Fingerprint

Cite this