Effect of Nitriding Process on Phase and Microstructure of Silicon Nitride Fibers Prepared by Direct Nitriding Method

作     者：ZHANG Qi YUAN Bo WANG Gang HAN Jianshen ZHAO Xin ZHANG Qi;YUAN Bo;WANG Gang;HAN Jianshen;ZHAO Xin

作者机构：State Key Laboratory of Advanced RefractoriesSinosteel Luoyang Institute of Refractories Research Co.Ltd.Luoyang 471039China 

出 版 物：《China's Refractories》 (中国耐火材料（英文版）)

年 卷 期：2020年第29卷第4期

页      面：40-45页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was supported by the National Natural Science Foundation of China(NSFC-No.51672256) National Natural Science Foundation of China-Key Projects of Henan United Fund(NSFC-No.U1904217) 

主　　题：nitriding process silicon nitride fibers microstructure 

摘      要：In this paper,Si3N4 fiber materials were fabricated by nitridation of porous Si green bodies,which were prepared by the foaming method combined with *** effect of the nitriding process(the heating rate and the nitrogen flow rate)on the phase and the microstructure was *** results show that decreasing the heating rate and the nitrogen flow rate is both beneficial to the growth of Si3N4 nanofibers and promoting the disintegration of the pore wall structure of the porous green *** optimized nitrogen flow rate and the heating rate for the growth of silicon nitride fibers are 150 mL/min and 0.5℃/min,respectively.