PREP法制备高铌TiAl粉末工艺研究及粒度预测  

Study on Process and Particle Size Prediction on High-NbTiAl Powder Produced by PREP

作　　者：贺卫卫 汤慧萍[1,2] 陈斌科 向长淑[1,2] 刘海彦 贾文鹏[2] He Weiwei;Tang Huiping;Chen Binke;Xiang Changshu;Liu Haiyan;Jia Wenpeng(Xi’an Sailong Metal Materials Co.,Ltd.,Xi’an 710005 China;State Key Laboratory for Porous Metals Materials,Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China)

机构地区：[1]西安赛隆金属材料有限责任公司,陕西西安710005 [2]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《钛工业进展》2019年第3期26-30,共5页Titanium Industry Progress

摘　　要：系统研究了等离子旋转电极工艺参数对高铌TiAl粉末粒度大小及分布的影响,影响粉末粒度大小的主要因素为电极棒直径和转速。提高电极棒直径和转速,都有利于提高高铌TiAl粉末中细粉(直径<75μm)的收率,并使粉末的粒度分布由单峰分布转为双峰分布。通过分析高铌TiAl粉末颗粒的形成条件,结合材料及制粉工艺参数,并对比粉末的实际粒径,修正计算公式,获得了通过等离子旋转电极工艺制备高铌TiAl粉末平均粒径的经验计算公式。Plasma rotation electrode process(PREP) was used to produce high-Nb TiAl powder,the effects of process parameters on the particle size and distribution were systematically studied.The results show that the particle size of as-produced high-Nb TiAl powder is mainly determined by the rotating speed and diameter of electrode bars.High rotating speed and large diameters of electrode lead to fine powder(less than 75 μm),and the particles distribution from a unimodal distribution change to a bimodal distribution.Through analyzing the forming conditions of powder particle,putting in the high-Nb TiAl materials constants and PREP parameters,and comparing the calculate values with actual particles,an empirical formula was developed to calculate mean particle diameters of high-Nb TiAl powder produced by PREP.

关 键 词：等离子旋转电极工艺 高铌TiAl粉末 粒度 

分 类 号：TG146.23[一般工业技术—材料科学与工程]