摘要
采用高能球磨法制备W-Gd_(2)O_(3)-Al混合粉末,通过设计正交实验,采用X射线衍射(XRD)、扫描电镜(SEM)分析了球磨时间、球磨转速、球料比对粉末物相和颗粒尺寸的影响,为高能球磨制备W-Gd_(2)O_(3)-Al复合材料提供最佳工艺参数。结果表明:球料比对晶粒细化影响最为显著,而球磨时间和球磨转速在本实验范围内对其影响较小。过度延长球磨时间、增大球磨转速不仅不会细化晶粒尺寸,还会发生粉末相变。综合分析获得最佳球磨工艺组合为:球磨转速400r/min、球磨时间15h、球料比10:1。上述工艺参数组合进行高能球磨,相变稳定、磨球之间碰撞频率适中,利于粉末细化。
The W-Gd_(2)O_(3)-Al mixed powder was prepared by high-energy ball milling method.The effects of ball milling time,ball milling speed and pellet ratio on powder phase and particle size were analyzed by X-ray diffraction(XRD)and scanning electron microscopy(SEM)through orthogonal experiments,which provided the best process parameters for the preparation of W-Gd_(2)O_(3)-Al composites by high-energy ball milling.The results show that the pellet ratio has the most significant effect on the grain refinement,while the grinding time and grinding speed have little effect on the grain refinement within the test range.Excessive extension of milling time and increase of milling speed will not only reduce grain size,but also result in powder phase transformation.The optimum grinding process combination is obtained by comprehensive analysis:the grinding speed is 400 r/min,the grinding time is 15 h,and the ball-material ratio is 10:1.The high energy ball milling with the combination of the above process parameters has the advantages of stable phase transformation and moderate collision frequency,which is conducive to powder refinement.
作者
王艳丽
唐德文
黄景昊
肖魏魏
WANG Yanli;TANG Dewen;HUANG Jinghao;XIAO Weiwei(School of Mechanical Engineering,University of South China,Hengyang 412000,China;Key Laboratory of Nuclear Emergency Safety Technology and Equipment,University of South China,Hengyang 412000,China)
出处
《粉末冶金工业》
CAS
北大核心
2023年第6期146-151,共6页
Powder Metallurgy Industry
基金
衡阳市科技计划项目资助(202150063435)。
关键词
球磨工艺
正交实验
球磨转速
球料比
球磨时间
ball milling process
orthogonal test
ball milling speed
ball material ratio
ball milling time
作者简介
王艳丽(1998-),女,硕士,主要研究方向为核先进核材料服役技术。;通讯作者:唐德文(1976-),男,教授,博士生导师,主要研究方向为高速加工与超硬材料加工技术、先进制造与核电装备技术。
