Thermal Stability of Al3BC3

The thermal stability of Al3BC3 powder was analyzed. Nearly X‐ray‐pure Al3BC3 powder was obtained through the calcination of the aluminum, B4C, and carbon mixture at 1800°C in Ar. In contrast to the former investigations, which reported the melting of so called “Al8B4C7” at 1800°C, Al3BC3 did not me...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2009-09, Vol.92 (9), p.2172-2174
Main Authors: Lee, Sea-Hoon, Tanaka, Hidehiko
Format: Article
Language:English
Online Access:Get full text
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Summary:The thermal stability of Al3BC3 powder was analyzed. Nearly X‐ray‐pure Al3BC3 powder was obtained through the calcination of the aluminum, B4C, and carbon mixture at 1800°C in Ar. In contrast to the former investigations, which reported the melting of so called “Al8B4C7” at 1800°C, Al3BC3 did not melt up to 2100°C. Instead, it decomposed by the vaporization of aluminum. The decomposition occurred distinctly at 1400° and 1900°C in flowing Ar and a sealed carbon crucible, respectively. The results indicated that the decomposition temperature depended on the partial pressure of aluminum vapour in the atmosphere.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2009.03171.x