纳米碳化钨粉的生产  

Production of Nanometer Tungsten Carbide Powder

作　　者：李广生[1] 李飞 

机构地区：[1]上海材料研究所,上海200437 [2]崇义章源钨业股份有限公司,江西崇义341300

出　　处：《中国钨业》2015年第4期68-72,共5页China Tungsten Industry

基　　金：上海市虹口区科委产学研平台项目(14HKC08)

摘　　要：随着研究的不断深入,纳米硬质合金的稳定性也越来越受关注,而原料碳化钨的质量好坏直接影响着纳米硬质合金的质量。选用超细仲钨酸铵为原料,通过传统优化工艺在回转炉内调整工艺参数生产亚微细三氧化钨和紫色氧化钨,然后将两种氧化钨在还原炉内通过逆氢低温快速还原工艺制取纳米钨粉,最后以纳米钨粉为原料利用低温快速碳化法生产出纳米碳化钨粉;在生产过程中采用费氏法、氮吸附法与扫描电镜图像法相结合的方法对各种粉末的粒度、松装密度、孔隙度、含氧量等物理性质进行综合测评,并且通过各种粉末的形貌分析原料对粉末质量的影响。结果表明,采用超细仲钨酸铵为原料在传统工艺条件下可以生产出纳米碳化钨粉。By using ultrafine APT as raw material, submicron tungsten trioxide and oxidation of Purple Tungsten were prepared using the traditional optimization process in the rotary kiln with the adjusted processing parameters. Nano-tungsten powder was then produced by inverse cryogenic hydrogen reduction process with the two kinds of tungsten oxide in the reduction furnace. Using the nano-tungsten powder as raw materials, Nano-crystalline Tungsten carbide powder was produced by using low temperature rapid carbonation method to produce. In the production process, this paper comprehensive evaluated the Particle size, bulk density, porosity and oxygen of the various powders by Fisher method, nitrogen adsorption and scanning electron microscope image method. The effect of raw materials on the quality of powder effect was analyzed by observing the powder morphology. The results show that the nano-WC powder can be produced by using the ultrafine APT as raw material in the conventional process conditions.

关 键 词：纳米 碳化钨 粒度 APT 硬质合金 

分 类 号：TF123.7[冶金工程—粉末冶金] TB383.1[冶金工程—冶金物理化学]