Decomposition of Al4O4C in the presence of C at high temperatures in vacuum-Reference-Cited by-同舟云学术

Decomposition of Al4O4C in the presence of C at high temperatures in vacuum

Published:2018-05-15 Issue:5 Volume:109 Page:399-404
ISSN:2195-8556
Container-title:International Journal of Materials Research
language:
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Author:

Feng Yuebin¹,Hou Hailan¹,Yang Bin²³,Yang Baomin¹,Zi Futing¹

Affiliation:

1. aFaculty of Science, Kunming University of Science and Technology, Kunming, P.R. China

2. bFaculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming, P.R. China

3. cNational Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, P.R. China

Abstract

AbstractThe decomposition of Al4O4C in the presence of C at 1 473–1 873 K in vacuum was researched using the condensation products with high content of Al4O4C, formed in the carbothermal reduction of Al2O3, as the raw materials. The results showed that Al4O4C decomposed into gaseous products at 1 573–1 873 K in vacuum. It was speculated that Al4O4C decomposed into Al-containing gaseous species, CO and O2, and then the O2 reacted with C to form CO. The reaction of the O2 with C made the decomposition of Al4O4C take place more easily. With the decrease in temperature, the Al-containing gaseous species and CO formed condensates mainly consisting of Al4O4C, Al4C3 and Al2O3, and also containing Al at experimental temperatures of 1 773 K and 1 873 K.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

Link

https://www.degruyter.com/document/doi/10.3139/146.111617/pdf

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