High-temperature oxidation of Ti3Al0.5Si0.5C2 compounds between 900 and 1200 ℃ in air

Title
High-temperature oxidation of Ti3Al0.5Si0.5C2 compounds between 900 and 1200 ℃ in air
Authors
D.B. LeeThuan Dinh Nguyena박상환
Keywords
Nanostructures; Powder metallurgy; High-temperature alloys; Thermal analysis
Issue Date
2009-02
Publisher
Journal of alloys and compounds
Citation
VOL 469, NO 1-2, 374-379
Abstract
The layered, machinable quaternary compound, Ti3Al0.5Si0.5C2, was synthesized via the powder metallurgical route, and oxidized between 900 and 1200 ℃ in air for up to 80 h. The oxidation of Ti3Al0.5Si0.5C2 produced rutile-TiO2, α-Al2O3, and amorphous SiO2, together with the evolution of CO or CO2 gases. The oxide scale consisted primarily of an outer TiO2-rich layer, an intermediate Al2O3 layer, and an inner TiO2-rich layer. Relatively thick scales formed because of the formation of the semi-protective TiO2 and the gaseous escape of carbon.
URI
http://pubs.kist.re.kr/handle/201004/36967
ISSN
0925-8388
Appears in Collections:
KIST Publication > Article
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