Thermal Stability of Al3BC3

被引：23

作者：

Lee, Sea-Hoon ^{[1
]}

Tanaka, Hidehiko ^{[2
]}

机构：

[1] KIMS, Chang Won 641831, Gyeongnam, South Korea

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2009年 / 92卷 / 09期

关键词：

SILICON-CARBIDE; AMORPHOUS BORON; CRYSTALLIZATION; TOUGHNESS; ALUMINUM; AL8B4C7; PHASE; AL;

D O I：

10.1111/j.1551-2916.2009.03171.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 degrees C in Ar. In contrast to the former investigations, which reported the melting of so called "Al8B4C7" at 1800 degrees C, Al3BC3 did not melt up to 2100 degrees C. Instead, it decomposed by the vaporization of aluminum. The decomposition occurred distinctly at 1400 degrees and 1900 degrees 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.

引用

页码：2172 / 2174

页数：3

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