掺Cr的APT为原料制备的WO_3和W粉的物化性能研究  

Study on Physicochemical Properties of WO_3 and W Powders Prepared with Cr-doped APT

作　　者：万林生[1] 许立强[1] 黄海[1] 赵立夫 梁勇[3] 杨运光 章秋霖 

机构地区：[1]江西理工大学冶金与化学工程学院,江西赣州341000 [2]崇义章源钨业股份有限公司,江西崇义341300 [3]钨资源高效开发及应用技术教育部工程研究中心,江西赣州341000 [4]湖南辰州矿业有限责任公司,湖南沅陵419605

出　　处：《稀有金属与硬质合金》2016年第4期32-37,共6页Rare Metals and Cemented Carbides

基　　金：资源与环境领域国家863计划课题(2012AA061902)

摘　　要：以掺Cr的APT为原料制备了WO_3和W粉,对其物化性能进行了研究。结果表明:掺Cr的WO_3和W粉的晶体结构与普通WO_3和W粉一致,Cr在WO_3和W粉中均以Cr_2O_3物相存在;与普通W粉相比,掺Cr的W粉粒度更小,均匀性好,晶体发育完整;Cr可有效抑制W粉在还原过程中的气相沉积和长大,但氧指数稍高;Cr在WO_3和W粉中的分布均具有良好的宏观和微观均匀性。WO3 and W powders were prepared with Cr-doped APT as raw material,and their physicochemical properties were studied. The results show that Cr-doped WO3 and W powders have consistent crystal structure with ordinary WO3 and W powders,and Cr exists in the form of Cr2O3 in the two powders. Compared with ordinary W powder,Cr-doped W powder has smaller particle size, good uniformity and complete crystal structure. Cr can effectively inhibit vapor deposition and growth of W power during reduction, but the oxygen index is slightly higher. Cr distribution in both WO3 and W powders is of good macroscopic and microscopic uniformity.

关 键 词：掺Cr的APT WO3粉 W粉 物化性能 CR2O3 

分 类 号：TF841.1[冶金工程—有色金属冶金]