Synthesis of nanosized tungsten powder

作     者：Guangfeng Lu Junjie Hao Zhimeng Guo Ruizhu Zhang Ji Luo Liying Zhang 

作者机构：Materials Science and Engineering School University of Science and Technology Beijing Beijing 100083 China Department of Mechanical and Engineering North China Institute of Water Conservancy and Hydroelectric Power Zhengzhou 450045 China 

出 版 物：《Journal of University of Science and Technology Beijing》 (北京科技大学学报（英文版）)

年 卷 期：2005年第12卷第4期

页      面：360-364页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was financially supported by the National Science Funds of Beijing (No.2052015) 

主　　题：Nano-tungsten powder reduce SAXS 

摘      要：Nanosized tungsten powder was synthesized by means of different methods and under different conditions with nanosized WO3 powder. The powder and the intermediate products were characterized using XRD, SEM, TEM, BET （Brunauer Emmett Teller Procedure） and SAXS （X-ray diffracto-spectrometer/Kratky small angle scattering goniometer）. The results show that nanosized WO3 can be completely reduced to WO2 at 600℃ after 40 min, and WO2 can be reduced to W at 700℃ after 90 min, moreover, the mean size of W particles is less than 40 nm. Furthermore, the process of WO3→WO2→W excelled that of WO3→W in getting stable nanosized tungsten powder with less grain size.