Effect of Ball Milling Parameters on the Refinement of Tungsten Powder

被引：22

作者：

Wu, Zaoming ^{[1
]}

Liang, Yanxia ^{[1
]}

Fu, Engang ^{[1
]}

Du, Jinlong ^{[1
]}

Wang, Peipei ^{[1
]}

Fan, Yong ^{[1
]}

Zhao, Yunbiao ^{[1
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

来源：

METALS | 2018年 / 8卷 / 04期

关键词：

morphology and microstructure; nanocrystalline tungsten; refinement; milling speed; process control agent; PLASMA-FACING MATERIALS; MECHANICAL ATTRITION TREATMENT; MICROSTRUCTURAL EVOLUTION; RECRYSTALLIZATION BEHAVIOR; FABRICATION;

D O I：

10.3390/met8040281

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high-energy ball milling method was adopted to explore the influence of ball milling parameters, such as milling speed and additive amounts of process control agent (PCA) on tungsten powder. The morphology and microstructure of tungsten powder in the process of refinement were characterized by field-emission scanning electron microscope (FE-SEM), field-emission transmission electron microscope (FE-TEM), and X-ray diffractometer (XRD). Results revealed that the ball milling process and the refinement of tungsten particle and grain can be largely influenced by these two parameters. The milling efficiency was found to be highest with the milling speed of 700 rpm and additive amounts of 8% PCA. The mechanisms for the effect of these two parameters and milling time on the refinement process were discussed. Nanocrystalline tungsten powder with a particle size and grain size smaller than 100 nm was obtained, and the grain size of 5-15 nm was fabricated successfully under the highest milling efficiency conditions.

引用

页数：13

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