Research on the Fe-silicon nitride material self-producing N_2 at high temperature  

作　　者：Junhong Chen Xueda Wang Jialin Sun Huasheng Zhan Wen Song 

机构地区：[1]Department of Inorganic and Nonmetallic Materials, University of Science and Technology Beijing, Beijing 100083, China [2]School of Material Science and Technology, Anshan University of Science and Technohology, Anshan 114002, China

出　　处：《Journal of University of Science and Technology Beijing》2006年第1期78-81,共4页北京科技大学学报（英文版）

基　　金：financially supported by the National Nature Science Foundation of China (No. 50172007 and No. 50332010)

摘　　要：The Fe silicon nitride synthesized by flashing combustion process was studied to determine the reaction temperature between Fe and silicon nitride, the account of N2 given out in the course of the reaction, and the change of the microstructure during calcination. The results showed that at 1127.2℃ the Fe-silicon nitride self-reacts and releases N2 and under 101.3 kPa the volume of N2 given out in the course of the reaction is 20 times more than that of the starting material. N2 is produced quickly, and completes in several decade seconds. With the producing of N2, the structure of Silicon Nitride around Fe becomes loose and porous, or cracks are formed by the reaction between Fe and silicon nitride. So if it is made use of that Fe-silicon nitride self-producing N2 at the high temperature, the performance of the material on a base of Fe-silicon nitride could be greatly improved.The Fe silicon nitride synthesized by flashing combustion process was studied to determine the reaction temperature between Fe and silicon nitride, the account of N2 given out in the course of the reaction, and the change of the microstructure during calcination. The results showed that at 1127.2℃ the Fe-silicon nitride self-reacts and releases N2 and under 101.3 kPa the volume of N2 given out in the course of the reaction is 20 times more than that of the starting material. N2 is produced quickly, and completes in several decade seconds. With the producing of N2, the structure of Silicon Nitride around Fe becomes loose and porous, or cracks are formed by the reaction between Fe and silicon nitride. So if it is made use of that Fe-silicon nitride self-producing N2 at the high temperature, the performance of the material on a base of Fe-silicon nitride could be greatly improved.

关 键 词：synthesis by flashing combustion process Fe-Silicon Nitride NITROGEN 

分 类 号：TB333[一般工业技术—材料科学与工程]