Low-temperature synthesis of boron carbide powder from condensed boric acid-glycerin product

被引：72

作者：

Kakiage, Masaki ^{[1
]}

Tahara, Naoki ^{[1
]}

Yanase, Ikuo ^{[1
]}

Kobayashi, Hidehiko ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Dept Appl Chem, Sakura Ku, Saitama 3388570, Japan

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 12期

关键词：

Boron carbide (B(4)C); Glycerin; Boric acid; Precursor; Low-temperature synthesis; PRECURSOR;

D O I：

10.1016/j.matlet.2011.03.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystalline boron carbide (B(4)C) powder was synthesized by the carbothermal reduction of a condensed product formed from boric acid (H(3)BO(3)) and glycerin (C(3)H(8)O(3)). The condensed product was prepared by dehydration after directly mixing equimolar amounts of H(3)BO(3) and glycerin, which was followed by pyrolysis in air to obtain a precursor powder from which the excess carbon had been eliminated. The prepared precursor powder had a bicontinuous boron oxide (B(2)O(3))/carbon network structure. Crystalline B(4)C powder without residual carbon was successfully synthesized from this precursor powder by heating at 1250 degrees C for 5 h in an Ar flow. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1839 / 1841

页数：3

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