蓝钨氢还原制备钨粉工艺研究  

Study on the preparation of tungsten powder by hydrogen reduction of blue tungsten

作　　者：喻相标 肖杰 郭少毓 肖义钰 廖春发[1] 姜平国 YU Xiangbiao;XIAO Jie;GUO Shaoyu;XIAO Yiyu;LIAO Chunfa;JIANG Pingguo(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083,China;School of Materials,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000 [2]北京科技大学钢铁共性技术协同创新中心,北京100083 [3]上海电机学院材料学院,上海201306

出　　处：《有色金属科学与工程》2021年第3期35-41,共7页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51774154)。

摘　　要：超细钨粉是生产硬质合金的重要原料,目前工业上制备超细钨粉的方法主要是氧化钨氢还原法。如何低成本、大规模的生产出均匀的超细钨粉一直是一个研究热点。文中采用控制变量法,进行蓝钨氢还原实验,探究还原温度、氢气流量和还原时间对产物钨粉形貌的影响。当还原温度为700℃,氢气流量为150 mL/min,还原时间为55 min,此时蓝钨氢还原产物的微观形貌中出现大量类似于紫钨的针状晶体。Ultrafine tungsten powder is an important raw material for producing cemented carbide.At present,the main method of preparing it is hydrogen reduction of tungsten oxide in industry.How to mass-produce uniform one at low cost has always been a hot area of research.In this paper,a controlled variable method was used to carry out blue tungsten hydrogen reduction experiments to explore the influence of reduction temperature,hydrogen flow rate and reduction time on the microstructure of prepared tungsten powder.A large number of needle-shaped crystals which might be violet tungsten appeared,when the reduction temperature,hydrogen flow rate and reduction time was 700℃,150 mL/min,55 min,respectively.

关 键 词：蓝钨 氢还原 钨粉 蓝钨氢还原 

分 类 号：TF841.2[冶金工程—有色金属冶金] TG146.4[一般工业技术—材料科学与工程]