Reaction Parameters on the Reactivity in the Preparation of B4C by SHS

被引：1
|
作者：
Shin, Chang Yun [1 ]
Yun, Ki Seok [1 ]
Park, Yeong Cheol [1 ]
Nersisyan, Hayk [1 ]
Won, Chang Whan [1 ]
机构：
[1] Chungnam Natl Univ, Engn Res Ctr Rapidly Solidified Mat, Daejeon 305764, South Korea
来源：
JOURNAL OF THE KOREAN CERAMIC SOCIETY | 2005年 / 42卷 / 01期
关键词：
SHS; Initial pressure; Unreacted Mg; Composition;
D O I：
10.4191/kcers.2005.42.1.022
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 preparation of B4C by SHS in B2O3-Mg-C system was investigated in this study. In the preparation of B4C, the effect on reactivity and reaction products of the initial pressure of inert gas in reactor, the content of Mg and C in mixture was investigated. The minimum initial pressure of inert gas in reactor for SHS reaction in this system was 25 atm, and as the pressure increased, the concentration of unreacted Mg decreased and combustion temperature increased. At the initial inert gas pressure in reactor of 25 atm, the optimum composition for the preparation of pure B4C was 2B(2)O(3) + 6.3Mg + 0.94C. The B4C synthesized in this condition had an irregular shape and the particle size of 1 similar to 3 gm.
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页码：22 / 27
页数：6
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