Synthesis of Al8B4C7 from Aluminum, Boron trioxide and Activated Carbon Mixed Powders

被引：5

作者：

Cui, Peng ^{[1
]}

Yuan, Wenjie ^{[1
]}

Deng, Chengji ^{[1
]}

Zhu, Hongxi ^{[1
]}

Li, Jun ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Breeding Base Refractories & Ceram, Wuhan 430081, Peoples R China

来源：

ADVANCES IN CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING, PTS 1-5 | 2013年 / 634-638卷

关键词：

Al8B4C7; boron trioxide; synthesis; mechanism; MGO-C REFRACTORIES; CARBOTHERMAL REDUCTION; OXIDATION PROTECTION; CARBIDE; B4C;

D O I：

10.4028/www.scientific.net/AMR.634-638.2383

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Al8B4C7 ceramic powder was successfully synthesized via a gas-solid reaction method using aluminum, boron trioxide and activated carbon as the starting materials. The effects of synthesis temperature and the amount of B2O3 addition on synthesis of Al8B4C7 were investigated. The results indicated that the optimized process for preparing the Al8B4C7 was that the mixtures were heated at 1800 degrees C for 2 h in flowing argon atmosphere. With the heated temperature increasing, the Al8B4C7 content was decreased in the products. And 0.5 molar excess of B2O3 addition promoted the formation of Al8B4C7. The heating samples at 1800 degrees C had a hexagonal plate-like morphology with similar to 100 mu m in size.

引用

页码：2383 / 2387

页数：5

共 15 条

[1]

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[2]

Inomata Y., 1980, Yogyo-Kyokai-Shi, V88, P353

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